|2/7/2017||Sources, Chemistry, Fate, and Transport of Chromium in Drinking Water Treatment Plants and Distribution Systems|
The potential promulgation of a national maximum contaminant level (MCL) for hexavalent chromium (Cr[VI]) and the continued loss of consumer confidence caused by news reports about chromium (Cr) in drinking water increases the urgency for understanding how Cr behaves in treatment plants and distribution systems. Some utilities have reported Cr in their treated water when no Cr was detected in their source water, while other utilities have reported a loss of Cr through their treatment plant, even though Cr removal is not a treatment objective. Cr levels have also been observed to alternatively increase, decrease, or remain the same in distribution systems. Moreover, the behavior of trivalent chromium (Cr[III]) and Cr(VI) species needs to be understood since they possess different toxicities and readily inter-convert in the presence of oxidant and reductants. Fundamentally, Cr's often unexpected behavior is a product of its complex aqueous chemistry, involving sorption/desorption, precipitation/dissolution, and oxidation/reduction reactions.
This webcast presented results from the project
Sources, Chemistry, Fate, and Transport of Chromium in Drinking Water Treatment Plants and Distribution Systems
(#4497). Topics included:
- The kinetics of Cr(III) oxidation in the presence of common drinking water treatment oxidants measured by oxidation studies
- Cr concentration and speciation profiles observed by sampling of treatment plants
- Potential sources of Cr, including treatment chemicals and leaching from stainless steel piping
- The degree that Cr concentrations and speciation changes in distribution systems under the influence of residual disinfectants as observed by sampling, pipe loop studies, and analysis of the third unregulated contaminants monitoring rule (UCMR3) database
The webcast emphasized that there are several potential sources of Cr in treatment plants, the importance of particulate Cr(III) in controlling the fate of Cr in treatment plants, and the variable behavior of Cr under the influence of residual disinfectants in distribution systems.
|2/2/2017||New and Emerging Capital Providers for Infrastructure Funding |
This Webcast will highlight the results of the recently published project
New and Emerging Capital Providers for Infrastructure Funding
(#4617), describing various new and emerging capital financing alternatives, when they may be suitable to consider over more traditional methods of financing, and benefits and challenges they bring. The Webcast will also provide several examples, including those involving direct lending, public-private partnerships, and socially responsible investing.
|1/30/2017||One Water Implementation: A Path to Reliability and Resiliency for Water Utilities|
One Water is an integrated planning and implementation approach to managing finite water resources for long-term resilience and reliability, meeting both community and ecosystem needs. Co-sponsored by the U.S. Water Alliance, this webcast discussed the various drivers pushing utilities in the direction of One Water, and how they have used the One Water framework to create efficiencies in service delivery, achieve water quality and environmental improvements, and diversify and stretch a community's water supplies. Two recently published documents, WRF's Blueprint for One Water and U.S. Water Alliance's One Water Roadmap, will be showcased as practical tools for utilities seeking to implement a One Water framework. Both documents contain best practices and real-world examples of how diverse utilities are pursuing One Water initiatives.
|11/10/2016||Webcast: Tracking Backflow on Customer Meters: What It Means for the Water Utility |
The advent of smart meters, AMR, and AMI allow water utilities to monitor metering systems to find times when the water meter runs in reverse. The project "Case Studies to Identify Occurrence, Accuracy, and Causative Factors of Reverse Flow as Measured by Meters" (#4384
) focused on reverse flow in residential meters. American Water’s research team examined several key topics:
- How often do meters run in reverse?
- When they do, how accurately do they measure the reverse flow?
- What are the possible causes for such activity?
- How can utilities investigate these events and confirm the causes?
The upcoming webcast will summarize project findings, namely that where numbers of backflow occur at the same time or an individual meter displays repeated reverse flow, utilities can take action to improve operations or take corrective action with their customers.
|10/20/2016||Pilot Testing of Nitrate Treatment Processes with Minimal Brine Waste|
This webcast discussed Pilot Testing Nitrate Treatment Processes with Minimal Brine Waste
). The project independently evaluated emerging technologies (biological and electrochemical denitrification) to cost effectively treat nitrate in groundwater, while reducing waste streams and optimizing spent brine recycling. Current treatment technologies can alleviate the fundamental problem (i.e., reduce nitrate concentration in drinking water), but often create significant waste streams, which must be managed. Utilities that require nitrate treatment to meet regulatory compliance requirements will be provided with better understanding and guidance to assess the applicability of these technologies to their own conditions.
Pilot testing was conducted at the City of Avondale, Arizona, which has experienced regulatory and operational challenges due to elevated nitrate and co-occurring chromium in groundwater, including waste disposal concerns associated with spent brine and excess waste stream production. Since the City relies on groundwater exclusively, nitrate treatment is a high priority to ensure a safe and reliable potable water supply that complies with the regulations and water quality goals.
|9/27/2016||Smart Irrigation Controller Demonstration and Evaluation|
This webcast discussed the findings of the WRF project Smart Irrigation Controller Demonstration and Evaluation in Orange County, Florida
). This project evaluated the water savings potential of soil moisture sensors (SMS) and evapotranspiration (ET) irrigation controllers on residential and commercial properties on two distinct soil types: flatwood soils and sandy soils. The participant pool was made up of 167 residential properties across the Orange County Utilities service area. Both SMS and ET controllers were implemented with an “education” group, which received customized installation. A non-education group received installation via typical methods used in the irrigation industry. On average, evapotranspiration irrigation controller treatments reduced irrigation by 18% across both sandy and flatwoods soils for the non-education group, and 32% for the education group. The soil moisture sensor technology reduced irrigation by 30% for the non-educational group and 42% for the educational group across both soils. The educational groups had a trend for less irrigation than their non-educational counterparts.
|9/22/2016||State of the Science of Plastic Pipe|
Water utilities need current information on plastic pipe performance, life cycle cost, and best practices for design and construction in order to select the most appropriate pipe material for each application. Utility case studies are not well documented in the published literature. Utility experiences with plastic pipe failure have been compiled in several surveys; however, when surveys do not compile ancillary data (e.g., pipe age, system pressure, soil conditions) along with failure data, it is difficult to use survey results to draw conclusions about the aggregate performance of pipe materials. This webcast, presented by Kathy Martel, P.E., provided an overview of research findings from WRF report, State of the Science: Plastic Pipe
). This report includes a literature review and documentation of utility case studies from a project workshop. Webcast topics included characteristics of PVC and HDPE pipe, technical performance of these pipe materials, pipe selection criteria used by different utilities, life cycle cost, design and construction issues, and operations and maintenance considerations.
|9/15/2016||Talking about Chloramines: A Discussion of the Concerns and Questions Regarding Water Treatment|
Public debate about changes in water treatment and the need to make wise decisions for sustainable, safe drinking water treatment are an important and integral part of the water sector. Scientists, engineers, and decision makers must use the best available science, consider regulatory requirements, and listen to citizen concerns about costs, benefits, and risks, in order to make complex and long-lasting treatment decisions that address multiple objectives. Despite the fact that chloramines are widely used in the United States and have a history of use in drinking water spanning nearly 100 years, concerns about formation of unregulated disinfection by-products, association of chloramines with lead contamination events, and other human and environmental concerns have resulted in passionate, heated debates in some communities. This webcast, presented by Dr. Ben Stanford and Dr. Mark LeChevallier, provided an overview of chloramine use in water treatment, discussed the concerns associated with chloramine use, and provided research findings from recent studies on the formation of unregulated disinfection by-products in both chloraminated and chlorinated systems.
This webcast was co-sponsored by the American Water Works Association (AWWA).
|8/23/2016||Webcast: Planning and Implementing CIS and AMR/AMI Projects|
This webcast discussed the newly published WRF report entitled, Planning and Implementing CIS and AMR/AMI Projects
). The webcast presenters discussed CIS and AMR/AMI projects and ways to avoid the complex challenges that inevitably arise when undertaking these projects. The #4583 report serves as a manual that utilities can use to increase the likelihood of a successful project. These projects require significant preparation, planning, and experience to implement and are virtually the cash register for a water utility, ensuring that customers are appropriately billed, payments are collected, and accounts properly managed. The consequences of failure are severe, with symptoms sometimes not being apparent until months after errors are made. The report contains multiple checklists and step-by-step lists to guide utilities through the entire project lifecycle resulting in a successful CIS or AMR/AMI implementation.
|7/21/2016||Capital Funding Imperatives: Best Practices for Identifying, Prioritizing, Funding, and Resourcing Capital Improvement Programs|
This webcast focused on Capital Funding Imperatives: Best Practices for Capital Improvement Programs (project #4493
). The objective of this project was to advance the state of knowledge and resources available to utilities in advancing priority capital projects from concept to execution stage. The six focus areas related to the capital funding process addressed by the project include:
- Balancing system development needs with infrastructure renewal needs
- Program implementation approaches and systems
- Business case evaluations
- Prioritization of projects and initiatives
- Increasing stakeholder involvement and customer research (in planning/prioritization and also in program implementation)
- Capital program funding approval and resourcing processes
During the webcast, Principal Investigator Mike Matichich and Project Manager Fair Yeager described the following:
- How the project team, including 24 participating utilities, selected the six focus areas
- The research process that was used
- Key findings, including cross-cutting themes for the six focus area topics
- How utilities can utilize the project deliverables
The webcast also featured case studies from participating utilities for two of the six focus areas:
- Timothy Noyes from Toho Water Authority described the evolution of TWA’s approaches and tools for capital improvement plan prioritization in order to meet evolving priorities and needs of the utility.
- Martin Tower from Austin Water described how enhancements to capital funding approval and resourcing approaches have resulted in greater efficiency and stakeholder value.
|7/12/2016||Energy Recovery Using In-Line Hydro Turbines|
This Webcast discussed WRF project #4447
, Energy Recovery from Pressure-Reducing Valve Stations Using In-Line Hydrokinetic Turbines
. This project investigated the use of an in-line hydrokinetic turbine (ILT), or a reverse acting pump, as an energy recovery device operating in parallel to a traditional pressure-reducing valve inside of an existing and tightly pressure-controlled potable water distribution system.
This Webcast discussed the practical benefits of this innovative technology including the installation and operation of the ILT, as well as the resulting pressure and flow transients and their impact on the water distribution system. The effects on downstream water quality from significant and rapid fluctuations of pressure and flow that result from both normal and upset operating conditions of an ILT will also be discussed. The final report is published and can be found on the website.
|6/7/2016||Rate Approval Process Communication Strategy and Toolkit|
Our nation’s water utilities face a significant financial challenge due to increases in regulatory requirements, a nationwide need to repair and replace aging water systems, a decrease in water sales due to conservation, and economic cycles that limit the ability and willingness to raise rates during economic downturns. This webcast discussed WRF project #4455
, Rate Approval Process Communication Strategy and Toolkit, which provides water professionals with a framework for effective rate communications that can garner support for rate adjustments. Get the rates you need, not the rates you think governing boards will approve!
The webcast presented an overview of research findings and associated tools to enable utilities to:
- Develop a long term communication strategy founded in trust and transparency
- Create an overarching message tied to community values that conveys information and provides consistency
- Tailor the level of detail to the needs of specific audiences
- Build trust and understanding by being visible and involved in the community
|6/2/2016||Treatment Mitigation Strategies for Poly- and Perfluorinated Chemicals|
This webcast presented the results of WRF project #4322
, Treatment Mitigation Strategies for Poly- and Perfluoroalkyl Substances
. Poly- and perfluoroalkyl substances (PFASs, also known as perfluorinated chemicals or PFCs) are a group of manmade chemicals with past and current uses in industrial processes and consumer products. The most notable PFASs are perfluorooctanoic acid (PFOA or C8) and perfluorooctane sulfonate (PFOS), but there are many others. PFASs are water-soluble and commonly detected in drinking water sources via industrial releases, releases of aqueous film-forming foams in training for and fighting fuel fires, discharges from wastewater treatment plants, street and storm water runoff, and the land application of biosolids.
The objectives of WRF project #4322 were to conduct a literature review and evaluate the ability of a wide spectrum of full-scale water treatment techniques to remove PFASs from contaminated raw water or potable reuse sources. Systems evaluated included conventional and advanced technologies, such as ferric and alum coagulation, granular/micro-/ultrafiltration, aeration, oxidation (i.e., permanganate, ultraviolet/advanced oxidation with hydrogen peroxide), disinfection (i.e., ozonation, chlorine dioxide, chlorination, and chloramination), granular activated carbon (GAC), anion exchange (AIX), reverse osmosis (RO), dissolved air flotation, and riverbank filtration. The #4322 report
is available for download on the WRF website. In addition, WRF’s recently published State of the Science
document provides additional background information on PFASs.
|5/19/2016||Catchment Management Investment Standard|
Catchment managers must operate in an economically regulated environment, where consumer affordability is paramount. In addition, regulators put the burden of proof on the water provider to mitigate water quality risk. This webcast explored the following questions:
- How can a sound business case be made for investment in catchment management as a water quality “treatment” option, using best practice approaches in triple bottom line cost benefit evaluation?
- How can it be demonstrated, in the geographic context of the catchment under consideration, that mitigation measures can be successfully implemented and water quality improvement achieved?
This webcast discussed key outputs from the joint Water Services Association of Australia and Water Research Foundation
, Source Catchments as Water Quality Treatment Assets: Industry Best Practices and Triple Bottom Line Cost Evaluation of Catchment Management Practices
. The Catchment Management Investment Standard has been prepared to assist water utilities make the case for catchment management for drinking water supply. It was developed in close collaboration with water utilities from both Australia and the United States to enable stronger business cases for catchment management as a viable alternative to more capital intensive (traditional) investments.
|5/2/2016||Managing Drought: Learning from Australia|
This webcast, hosted by the Alliance for Water Efficiency, discusses WRF project #4640
Managing Drought: Learning from Australia.
This recently-published report provides an overview of the key initiatives implemented by Australia's four largest cities during an extended period of extreme drought, and outlines how those measures could help California through its current water crisis. On top of successes in urban water efficiency, other key findings in the report include:
- Broad community involvement across sectors – households, business, industry and government – fosters a sense of fairness and collaboration in saving water.
- Clear, credible communication about the drought situation and response is needed to maximize public participation and support.
- Innovative water-pricing mechanisms, not employed during Australia's millennium drought, could be used to incentivize water savings in California.
|4/21/2016||Lead and Copper Rule: Potential Regulatory Changes, Corrosion Chemistry, and Stakeholder Communication|
The recent lead corrosion issues in Flint, Michigan have emphasized the responsibility that water utilities have in protecting public health. The EPA's Lead and Copper Rule (LCR) is currently being reviewed, and proposed revisions are expected to be released by the EPA in 2017. This webcast presented information on various LCR-related topics, including: National Drinking Water Advisory Council (NDWAC)
to the EPA on possible LCR revisions, LCR corrosion chemistry, a utility perspective on LCR communication challenges and lessons learned, and related resources from WRF. This information will be a valuable resource to help utilities ensure current and future compliance with the Lead and Copper Rule. For an overview of WRF research on lead and copper corrosion, please refer to our State of the Science document
.Additionally, A newly-released Lead and Copper Expert Symposium
also provides valuable information on possible future changes to the LCR.
|2/23/2016||Webcast: Guidelines for the Use of Stainless Steel in the Water and Desalination Industries|
The misapplication of stainless steel leading to premature corrosion continues to be a costly and common problem. Engineers and owners do not understand how to properly select these materials or specify the appropriate methods to use for their construction. This webcast presented the results of WRF project #4431
,Guidelines for the Use of Stainless Steel in the Water and Desalination Industries
. It will help viewers understand how to: 1) specify the type of stainless steel used for different applications based upon water quality considerations, 2) specify construction standards that will help extend the useful life of stainless steel materials to a period greater than 20 years, and 3) identify appropriate operating conditions to avoid stainless steel corrosion to the greatest extent possible.
|2/4/2016||Webcast: Metals Accumulation and Release within the Distribution System: Evaluation of Mechanisms and Mitigation |
This webcast summarized key findings of project #4509
, Metals Accumulation and Release Within the Distribution System: Evaluation of Mechanisms and Mitigation
. The potential for the accumulation and intermittent release of trace inorganic contaminants (TICs) and radiological contaminants within drinking water distribution systems has gained considerable attention in the drinking water community over the past several years. At-the-tap concentrations of certain TICs have been measured that far exceed their entry-point levels, and in some cases exceed drinking water standards. The accumulation and release of TICs is a complicated problem involving chemical, physical, and biological mechanisms, and likely occurs within all distribution systems to some degree. This webcast discussed the following:
- Recommendations associated with monitoring for TICs and release indicators from a full-scale distribution system
- Laboratory studies of TIC uptake within biofilms and desorption from pipe scales
- The comparative effectiveness and costs associated with use of unidirectional flushing, ice pigging, and foam swabbing to remove accumulated pipe deposits
- Industry recommendations including system-specific risk characterization and mitigation strategies
Video no longer available.
|1/21/2016||Webcast: Environmental Impact of Asbestos Cement Pipe Renewal Technologies |
This Webcast is based on project #4465
, Environmental Impact of Asbestos Cement Pipe Renewal Technologies
. This research investigated renewal practices and regulations, demonstrated renewal technologies, and evaluated their environmental impact. The first part of this Webcast documented the applicable regulations and discuss data needs. The second part of the webcast detailed the demonstrations and environmental impact evaluations of cured-in-place pipe (CIPP) and pipe bursting. The environmental impact of both technologies was evaluated through the collection of air, soil, and water samples that were analyzed for asbestos. Neither technology was found to have an adverse impact on the environment.
|12/15/2015||Webcast: Core Messages for Chromium, Medicines and Personal Care Products, NDMA, and VOCs |
This Webcast discussed
, originally titled Core Messages for Priority Contaminants of Emerging Concern
. The webcast explained why the researchers changed the title of the report to Core Messages for Chromium, Medicines and Personal Care Products, NDMA, and VOCs
. It also highlighted the development of core message or “thinking about” sheets along with an animated video,
Protecting Our Drinking Water
(referred to as the context animation). The webcast explained the best practices for risk communication employed in the work and will explain the focus group research that was conducted to evaluate the effects of the context animation and core message sheets on consumers who had been exposed to real news articles about the four substances. Finally, the webcast highlighted the findings of the work that are applicable to utilities considering communication about the substances of concern.
|11/5/2015||Webcast: A Snapshot of Water Loss - Examining the Country's Water Audit Submissions |
This Webcast discussed project #4372b
Water Audits in the United States: A Review of Water Losses and Data Validity
, which reviewed the largest collection of water audit data compiled to date. The Webcast reviewed the current status of water loss reporting and North American water loss statistics, including the reliability of the audit submissions, trends in water audit metrics, and areas for improvement in water loss audit requirements. The Webcast also featured a look into the progress of water loss adoption and training in Tennessee and included a brief update from the AWWA Water Loss Control Committee Chair on future activities.
|10/20/2015||Webcast: Remote Sensing for Proactive Watershed Management|
The researchers from APEM developed an approach to combine remote sensing imagery and ground based surveys for watershed management. Their approach was tested in a 2-phase project (#4475
), co-sponsored by UKWIR and WRF. The researchers begin with readily available imagery from satellites and aerial platforms to identify potential risk in a catchment (watershed), and then focus in on sub-catchment and field scale solutions that require more detailed imagery.
This Webcast will go over the steps involved in this remote sensing approach, including the development of risk maps, targeting of certain areas of interest, and identifying potential sources of pollution. The Webcast will be of interest to water utility watershed managers, environmental program managers, and water quality specialists.
|10/8/2015||Webcast: Evaluation of Lead Line Sampling Strategies|
The current Lead and Copper Rule (LCR) requires collection of compliance samples from the first liter at the tap following a minimum 6 hour stagnation period. There is debate among experts as to whether this sampling protocol is effective at capturing elevated lead levels. Some data has been interpreted to indicate that lead levels can be higher in water that was stagnant in the lead service line compared to lead levels in the first liter. A recently completed project,
Evaluation of Lead Line Sampling Strategies
(#4569), conducted a side-by-side comparison of five different lead sampling techniques. Each strategy was evaluated for effectiveness at detecting peak total lead levels. These strategies were compared to results collected during a minimum 12-L profile on each sampling date. This Webcast will present a comprehensive overview of the project objectives, results, and recommendations. The final report for project #4569 is available on the website.
|9/22/2015||Webcast: Reducing Volatile DBPs in Treated Drinking Water Using Aeration Technologies|
With the Stage 2 Disinfectants/Disinfection Byproducts Rule now implemented, many water utilities across the United States have or are considering aeration as a means to achieve compliance with the total trihalomethanes (TTHMs) MCL. For systems with only TTHM concerns and no compliance issues with the five haloacetic acid (HAA5) concentrations, aeration can be an attractive solution. It has lower capital and operating costs compared to most precursor removal processes or alternative disinfectants, which present their own operational costs and challenges. TTHM aeration can be used at clearwell and/or remote locations in the distribution system to treat only the fraction of water requiring TTHM reduction for LRAA compliance, further reducing costs.
WRF has recently completed two projects to provide guidance on the design, permitting, operation, and maintenance of aeration systems for reduction of TTHMs:
This Webcast provided a comprehensive overview of the projects’ objectives, results, and recommendations and will be very instructive to water utilities across the country that have high TTHMs in their treated water or in distribution systems.
|8/20/2015||Webcast: Biostability: Operational Definitions and Utility Assessments|
Biologically stable water is produced when all nutrients that might support significant bacterial growth in finished water have been sufficiently removed. While definitions of biostability in drinking water exist, they are primarily based upon European practice, where distribution systems are operated in the absence of a residual disinfectant. This Webcast presented the results from
, which is the first North American study to quantify the definition of biostability on a distribution system-scale in the presence of a disinfectant residual. In addition to the research report, a guidance manual and biostability assessment tool (BSAT) were developed. The tool will help utilities (1) track historical data, (2) benchmark data against results from this project, (3) assess system stability over time, and (4) identify controlling factors influencing biological stability on a site-specific basis.
|8/4/2015||Webcast: Legacy of Manganese Accumulation in Water Systems|
Manganese control is one of the most common treatment objectives for drinking water utilities even though it is frequently thought of as strictly a source water issue. Yet “legacy manganese,” that is the manganese that has accumulated in distribution systems, can cause a number of problems for utilities. With the EPA’s renewed interest in manganese as evidenced by its inclusion in the draft candidate contaminant list 4 (CCL4), it is now even more important that utilities understand the cost and implications of the accumulation of legacy manganese in their distribution systems.
This Webcast summarizes the findings of project #4314, Legacy of Manganese Accumulation in Water Systems: Assessment, Consequence, And Prevention. The Webcast will address practical questions related to legacy manganese, including:
1. What is legacy manganese?
2. How, where, and why does legacy manganese occur in distribution systems?
3. What are the costs and operational impacts of legacy manganese?
4. How can legacy manganese influence the public’s confidence in a utility?
5. How can a utility assess its risk for legacy manganese?
6. What best practices can utilities institute to limit the impacts of legacy manganese?
|7/30/2015||Drought Webcast Series: Customer Communications During Drought|
Conservation communications to customers is a dynamic process. This Webcast highlighted the communication programs of three utilities with a focus on barriers, solutions, and recommendations.
|7/21/2015||Drought Webcast Series: Financial Resiliency During Droughts|
Utilities need to maintain their financial stability during droughts and be well prepared for future drought-related events. This Webcast answers the following fundamental questions related to financial resiliency and drought:
1. What is the financial cost of a drought?
2. How should the financial cost of the drought be recovered?
3. Which approach is best suitable for our community?
4. Who should cut back their water use and by how much?
5. What is the impact to my customers due to the restriction in water use and the associated drought pricing?
6. How can water rates help you achieve your goals?
|7/16/2015||Webcast: Drought Webcast Series: Using Cost-Benefit Analyses to Compare Drought Management Practices|
Utilities need reliable data on the potential impacts and costs associated with drought versus mitigation strategies. This Webcast covers WRF 4546 Webinar FINAL.pdf
the results of project #4546, “Drought Management Under a Changing Climate: Using Cost-Benefit Analyses to Assist Drinking Water Utilities
.” The research reviewed how a cost-benefit analysis may be used in drought planning and the issues and challenges that drinking water utilities face in implementing drought management practices, including an example cost-benefit analysis for a hypothetical utility. This project was funded under the NOAA Climate Program Office, Sectoral Applications Research Program (SARP): Coping with Drought with the National Integrated Drought Information System (NIDIS). The final report is available on the website.
|7/9/2015||Webcast: Drought Webcast Series: Turf Replacement Programs|
Turf replacement programs are usually a component of larger conservations programs. The development and implementation of a successful turf replacement program can and does have significant impacts on residential demand reductions. This Webcast highlighted the turf replacement programs developed by three utilities. The presenters outlined their utility’s program, how barriers to turf replacement programs were overcome, and offered guidance to those who want to implement turf replacement programs.
|6/30/2015||Webcast: Monitoring and Responding to Nitrification in the Distribution System|
use is widespread in U.S. drinking water distribution systems as a secondary
disinfectant. About 30% of surface water treatment plants currently use
chloramines and the percentage of surface water treatment plants using
chloramines might rise to as high as 40‒65% in the near future. While
beneficial for controlling regulated disinfectant-by-product formation, water
utilities using chloramines as a disinfectant are often challenged by
nitrification in their distribution systems. This Webcast will help
water utility managers and operators develop nitrification management plans and
provide real-world examples from two utilities that have successfully managed
nitrification in their distribution systems.
|6/24/2015||Webcast: Evaluation of Strategies to Manage Trace Organic Compounds in Water|
In partnership with the Water Research Foundation (WRF) and the Water Environment Research Foundation (WERF), the Water Environment Foundation (WEF) will host this joint Webcast on Evaluation of Strategies to Manage Trace Organic Compounds (TOrC) in Water. Leading researchers will discuss ongoing
WRF project #4494
, which supports agencies in assessing the costs and benefits of alternative strategies to manage trace organics in watersheds. This research builds on the outcomes of recent research projects funded by WERF on the fate of TOrC (#CEC4R08, #U2R07) in conventional and advanced treatment systems and risk assessment tools for TOrC in the aquatic environment, as well as recent projects funded by WRF and other agencies. The Webcast will provide a brief overview of the programs for TOrC in the United States, the European Union, Switzerland, and Australia. The team will also present findings from the comparison of alternative TOrC management strategies in exemplary watersheds following a triple bottom line evaluation approach.
|6/23/2015||Webcast: Medium Pressure UV Inactivation of Viruses and Cryptosporidium|
This Webcast recapped the research performed under project #4376,
Guidance for Implementing Action Spectra Correction with Medium Pressure UV Disinfection.
The presentation briefly covered UV dose-response and action spectra that were developed for adenovirus,
, Giardia, and commonly used validation microbes. Speakers reviewed methods used to calculate action spectra correction factors (ASCF) including differences in the action spectra of common validation test microbes and regulated pathogens, UV output from the MP lamp, UV transmittance of the quartz sleeve, UV absorbance spectra of the water, and the reactor's lamp configuration. Implementation strategies for applying the ASCFs for regulatory credit were presented. This Webcast will be important for utilities, regulators, consultants, and manufacturers to get up to date on the latest approach to validating MP UV systems.
|5/21/2015||Webcast: Energy and Water Quality Management Systems for Drinking Water Utilities |
An integrated energy and water quality management system (EWQMS) simultaneously optimizes for energy and water quality within water utility’s operational constraints. Historically, such a system has been designed to minimize energy costs, and very little emphasis has been given to investigate its potential to reduce energy consumption and greenhouse gas (GHG) emissions. In project #4271,
Optimization of Energy and Water Quality Management Systems for Drinking Water Utilities
, an existing EWQMS was modified such that the operations could be improved for cost optimization, energy consumption, or GHG optimization. This Webcast will present (1) the current state-of-knowledge on existing EWQMS projects and practices, (2) the tradeoffs between cost savings and GHG emissions reduction based operations, and (3) a business case for implementing an EWQMS.
|5/12/2015||Webcast: Hexavalent Chromium Treatment with New Ion Exchange Resins and Reduction/Coagulation/Microfiltration|
This Webcast shared the results of two hexavalent chromium treatment projects 4423 and 4365. Both studies built upon the original body of research at Glendale Water & Power to test advancements in treatment technologies including microfiltration in the reduction/coagulation/filtration process (project #4365), and evaluation of new resins and adsorptive media at two different water agencies (project #4423). The presentation began with a discussion of City of Glendale’s research program, follow with the findings of these two recent studies, and then provided an example of California Water Service Company’s road to implementation of study findings for compliance with the new regulatory limit in California.
|4/23/2015||Webcast: Green Building Design: Water Quality and Utility Management Considerations|
Green buildings that include water conservation measures are becoming more prevalent. However, there may be unintended consequences to water quality associated with these buildings, including those associated with high water age. Project #4383
identified a number of concerns that are important to consider in green building design to protect public health and water quality. This Webcast summarized the findings of the project and provided information on one of the case studies featured in the report. The final report and an accompanying brochure are now available.
|4/14/2015||Webcast: AMR/AMI Standardization for Drinking Water Systems |
Standards for the radio transmission of meter readings and data they generate do not exist in the water industry. Furthermore, there is no evidence that typical mechanisms for standardization and interoperability between advanced meter infrastructure (AMI) and automated meter reading (AMR) systems will advance with a push from end users. The Water Research Foundation initiated
, “AMR/AMI Standardization for Drinking Water Systems,” to stimulate a needed change. This Webcast outlines the actions taken during the project to secure utility participation and identify key elements for standardization resulting in draft language as well as communication efforts to foster the standardization effort. This Webcast featured some of the useful language that utilities can use in their upcoming AMI and AMR initiatives and describe the efforts made to maintain the initiative after the project ends.
|4/7/2015||Webcast: Preparing for and Mitigating Algae Blooms and Cyanotoxins — The Utility Perspective|
With spring almost upon us, it’s time for water utilities to plan for potential cyanobacterial events. This Webcast, based on case studies, helps water utilities prepare for cyanobacterial and toxin events and identify prevention, mitigation, and treatment strategies. Standard operating procedures (SOPs) were presented that answer the following questions: (1) When and how should a utility monitor for algae, based on levels and frequency (2) When should a utility start cyanotoxin monitoring, how frequently, and where? (3) What analytical methods should a utility use and what are the triggers for using different analytical methods (4) What treatment preparation and actions should be taken in the event of toxin presence in the source water? In addition, results of a demonstration scale study on the use of ultrasonic buoy systems to control algal growth in a drinking water supply reservoir was presented.
|3/18/2015||Webcast: Controlling the Formation of Nitrosamines During Water Treatment|
Nitrosamines are an emerging class of disinfection by-products (DBPs) of health and regulatory concern. The U.S. Environmental Protection Agency (EPA) is considering regulating nitrosamines as part of the six-year review of the Stage 2 DBP Rule. Precursors for nitrosamines include treated wastewater discharges in the watershed and certain polymers (polyDADMAC, polyamine) used as coagulant aids. Nitrosamines are preferentially formed by chloramines. Jointly funded by the Water Research Foundation and the EPA, the objective of
was to develop improved strategies for minimizing nitrosamine formation during drinking water treatment and to develop treatment guidance for utilities. This Webcast focused on the following areas of research: (1) polymer management and removing nitrosamine precursors with powdered or granular activate carbon, (2) pretreatment strategies (with chlorine, ozone, and UV irradiation) for the destruction/transformation of nitrosamine precursors, and (3) case studies on nitrosamine formation and control at full-scale drinking water treatment plants. The final report for this project is now available on the website.
|2/26/2015||Webcast: Institutional Issues for One Water Management |
The term, “One Water,” recognizes that water from all sources must be managed holistically and cooperatively to meet social, economic, and environmental needs. As utilities transition to a One Water approach, they may encounter institutional issues related to planning and collaboration, legislation and regulations, economics and finance, culture and capacity, and citizen and stakeholder engagement. Jointly funded by the Water Research Foundation, Water Environment Research Foundation, and Water Research Australia,
presents a framework for overcoming these institutional issues and provides case studies to show how utilities have implemented a One Water approach. This Webcast will present the findings from the report and case studies from Clean Water Services in Oregon, and the San Francisco Public Utilities Commission.
|1/27/2015||Webcast: Reservoir Management |
WRF project #4222, Water Supply Reservoir Management Strategies
, assessed the use of rapid monitoring methods, modeling tools, and oxygenation and circulation techniques for water supply management. Ninety organizations (nearly all of them utilities) and 18 vendors participated in the research, and over 150 case histories were documented in the following three separate reports, each of which were discussed in this Webcast.
- 4222a Water Quality Modeling to Aid Water Supply Reservoir Management (2013)
- 4222b Rapid Water Quality Monitoring to Aid Water Supply Reservoir Management (2014)
- 4222c Oxygenation and Circulation Techniques to Aid Water Supply Reservoir Management (2015)
|12/9/2014||Foundation Knowledge Webcast: Cost-Effective Safety Decisions in Water Facility Design|
As drinking water facilities are replaced or upgraded, there is an excellent opportunity to reduce workplace hazards and substantially lower ongoing costs of operating safely. Currently there are few, if any, tools with which to forecast these costs and to compare the costs for alternative facility designs. To the extent that ongoing costs can be identified, quantified, and then reduced through facility design changes, they present significant opportunities for savings by reducing effort, resources, and management associated with performing work safely. WRF project #4236
Workforce Health and Safety: Prevention through Design
, was aimed at developing tools to help drive safety integration at the design phase. The project developed four models to support prevention through design (PtD) processes in water utilities of all sizes and types. This Webcast presented an overview of each of these models and explained how they can be used in water facility design and capital planning. It also showed how these tools can be used to assess existing facilities. Representatives from two participating utilities shared insights from their involvement in model testing and validation.
|11/13/2014||Webcast: Hexavalent Chromium Treatment with Strong Base Anion|
On July 1, 2014, the nation’s first MCL specifically for hexavalent chromium [Cr(VI)] was adopted by the California State Water Resources Control Board Division of Drinking Water, formerly Department of Public Health. In anticipation of and preparation for compliance with the MCL, the Soquel Creek Water District (District) led the WRF Tailored Collaboration project #4488
Hexavalent Chromium Treatment with Strong Base Anion Exchange
(SBA-IX), for which this Webcast is based on.
This project conducted an in-depth investigation of SBA-IX for Cr(VI) removal and residual brine management alternatives. While SBA-IX is a well-established drinking water technology for many contaminants, prior to the TC project, limited research had investigated SBA-IX for Cr(VI) removal. Project #4488 revealed that, in the water supply tested, SBA-IX repeatedly achieved greater than 20,000 bed volumes of treatment prior to regeneration. Brine recycle and treatment approaches also proved effective in minimizing waste residuals volumes. The findings from project #4488 confirmed SBA-IX as the best available treatment technology for the District and prompted the District to construct the first SBA-IX system specifically for potable Cr(VI) treatment. The report for this project has been posted on the WRF website.
|11/6/2014||Minimizing Waste Backwash Water from a Biological Denitrification Treatment System|
Biological denitrification (BDN) provides for a sustainable means of removing nitrate from groundwater supplies used for drinking water. Compared to conventional nitrate removal technologies, such as ion exchange or reverse osmosis, BDN does not generate a high-salinity waste stream, and provides the added benefit of actually destroying the nitrate to nitrogen gas instead of simply accumulating it into a waste product. Many previous studies have demonstrated the viability of BDN for nitrate removal from groundwater. In
WRF project #4470
, the research team aimed at improving the applicability of BDN by evaluating the potential for recoverin/g much of the waste backwash water generated by the process in recognition of the fact that many groundwater wells do not have access to sewers with the capacity to take the full washwater production rate. The researchers also evaluated the potential for hexavalent chromium removal with the BDN process. In this Webcast, the results of the project were presented and discussed. The report for this project has been posted on the WRF Website.
|10/7/2014||Foundation Knowledge Webcast: Optimizing Engineered Biofiltration|
Biological filters can allow for the achievement of multiple goals in a single treatment step. However, these benefits must be balanced with managing potential filter hydraulic challenges caused by biological fouling. This Webcast reviewed the results of
, which sought to further validate previously identified biofilter enhancement strategies. In this tailored collaboration project with Dallas Water Utilities (DWU) and Tampa Bay Water, the research confirmed and further optimized nutrient and peroxide biofilter enhancements. This work also showed that significant hydraulic benefits could be achieved with biofilter pH optimization. Additional work included an evaluation on the impacts of these enhancement strategies (peroxide and/or nutrient addition) on the holistic optimization of upstream treatment processes. Specifically, improved biofilter water treatment performance allowed a reduction in coagulant requirements at DWU, while providing the same level of treatment.
This Webcast benefited participants by reviewing the challenges and opportunities associated with biofilter optimization strategies. Recommendations on biofilter optimization approaches and a discussion on establishing reasonable expectations were also provided.
|9/30/2014||Foundation Knowledge Webcast: Effective Microbial Control Strategies for Main Breaks and Depressurization|
This Webcast presented the results and practical application of project #4307
, Effective Microbial Control Strategies for Main Breaks and Depressurization
. The purpose of the project was to improve utility responses to main breaks and depressurization events to better protect public health. A risk-based approach to main break responses was developed, resulting in four categories of main breaks with commensurate best practices for returning the main to service while reducing public health risks. Related outreach materials were developed to inform drinking water practitioners, including a Pocket Guide with Sanitation Procedures. The Webcast also provided updates on two key initiatives that are utilizing the results of this study: a process to update AWWA Standard C-651 (Disinfecting Water Mains) and the LPE (Low Pressure Event) Pilot Program being administered by the Missouri Department of Natural Resources. The project products are now available.
|9/25/2014||Acoustic Signal Processing for Pipe Condition Assessment |
This Webcast, based on
, provided an overview of acoustic signal processing for pipe condition assessment. Unique to pre-stressed concrete cylinder pipe (PCCP), individual wire breaks create an excitation in the pipe wall that may vary in response to the remaining compression of the pipe core. In non-PCCP, the structural excitation would require an external source acoustic pulse, causing a response indicative of relative pipe wall stiffness. The first part of the Webcast presented an overview of acoustic monitoring technologies for pipe condition monitoring. The second part of the Webcast detailed the experimental environment and intentionally inflicted damage to the pre-stressing wires in three specimens of PCCP.
|9/16/2014||Webcast: WRF Webcast on Climate Change Communication for Water Utilities|
Water utilities need to communicate the implications of climate change on water supplies to many audiences; for example, internal staff, Governing Board members, customers, and the press. This Webcast, based on
, shared insights, based on a nationally representative survey, on the public’s attitudes, beliefs, and actions concerning the nexus of community water and climate change. The findings may surprise you. For example, 92% of Americans support their community water provider being a leader in preparing their community for climate change. In addition to sharing the survey findings, this Webcast provided an overview of the pragmatic tools developed and tested in concert with the 13 water agencies who participated in the project. Tools shared include a message mapping strategy (with worksheets) and risk based communication templates for how to talk to people who indicate they do not believe in climate change. The resources for this project are now available.
|8/28/2014||Managing and Mitigating Cyanotoxins in Water Supplies|
As shown by the recent events in Toledo, OH, cyanotoxins can cause major issues for water utilities and their customers. Cyanotoxins (also known as algal toxins) are natural toxins produced by cyanobacteria (blue-green algae) that may cause human health impacts if ingested with drinking water or by skin contact in recreational waters. The incidence of cyanobacterial blooms in surface water is a worldwide phenomenon and there is a risk that a changing climate, continued urbanization, and increased nutrient loading of source waters may contribute to more frequent and intense cyanobacterial blooms in drinking water sources in the future. The Webcast will provide information that will help utilities better understand issues associated with cyanotoxins and identify the necessary tools to prepare for and address potential cyanobacteria/cyanptoxin events.
This Webcast is based on the WRF/AWWA Partnership Project,
Cyanotoxin Guides for Water Utility Managers
(WRF #4548, AWWA/WITAF #270). The purpose of this project is to develop two cyanotoxin utility action guides designed for use by water utility management and staff, plus a list of research needs. The first guide will consist of a summary of cyanotoxin occurrence trends, potential health effects, preemptive and mitigation strategies, and mitigation challenges. This guide is intended to help water systems recognize if cyanotoxins may be an issue for their utility and what initial steps to consider. The second guide will be an action oriented synthesis of relevant literature for utility personnel and the water utility community, providing information necessary to guide development of a technically sound evaluation of cyanotoxins as a water quality concern for the drinking water supply and appropriate mitigation measures.
The Webcast provided an overview of the major findings and action items from the project. The project guides will be available in early-2015.
|8/21/2014||Improving Water Quality and Consumer Satisfaction Using Guidance From the SMCLs|
This Webcast, based on
, provided an integrated overview of the EPA Secondary Maximum Contaminant Levels (SMCLs) in conjunction with up-to-date technical and consumer-based research that has occurred during the 35 years since their initial implementation in 1979. Utilities spend considerable funding to address the water quality and aesthetic issues addressed by these standards. Consumers decide the acceptability and value of their drinking water primarily based on a judgment of its taste, odor, and appearance. The Webcast presented an overview of the EPA Secondary Maximum Contaminant Limits, the rationale used to develop them, and current scientific knowledge related to their applicability. This information will aid utilities in developing a strategy for drinking water quality and consumer acceptability.
|7/23/2014||Webcast: 2014 Focus Area Subscriber Feedback Webcast |
The purpose of this Webcast was to obtain feedback from subscribing utilities on the relevance of the 10 existing WRF Focus Areas. In particular:
- How important are the 10 Focus Area issues or challenges to subscribing utilities and the water sector overall?
- What issues or challenges has WRF missed with the Focus Area research program?
Participants were given the opportunity to respond to these questions for each of the 10 Focus Areas via a real-time interactive survey, and by typing in responses to questions. Participants were provided background information on each of the 10 Focus Areas prior to the Webcast, and were given a short overview again during the actual Webcast.
|7/10/2014||Foundation Knowledge Webcast: Desalination Concentrate Management Policy Analysis for the Arid West|
Brackish groundwater desalination is a climate-independent water supply option in the arid regions of the western United States where freshwater options are limited. However, inland desalination is only viable when the concentrate management challenges can be overcome. This archived Webcast, hosted by the WateReuse Research Foundation on July 10, 2014, summarized key findings from
, Desalination Concentrate Management Policy Analysis for the Arid West
. The project was jointly funded by the Water Research Foundation and the WaterReuse Research Foundation, and led by El Paso Water Utilities (EPWU), in coordination with the Consortium for Hi-Technology Investigations in Water and Wastewater (CHIWAWA), several consultants, and WateReuse Research Foundation.
Listen to Ed Archuleta, retired CEO/President at El Paso Water Utilities and past Chair of the WRF Board of Trustees, and Dr. Robert Raucher, Senior Vice President at Stratus Consulting Inc., highlight the project findings, recommendations, and activities to further address the challenge of concentrate management for inland municipal water suppliers.
|6/24/2014||Webcast: Biofiltration Knowledge Base|
This Webcast introduced the Biofiltration Knowledge Base for Water Research Foundation Project 4459, "Development of a Biofiltration Knowledge Base
". The knowledge base is intended to capture the experiences and best management practices from North American water utilities currently in the process of implementing or operating high rate aerobic biofilters. Currently, the knowledge base contains information from 26 full-scale facilities broken into four phases of implementation ― planning, evaluation, design, and operation. This Webcast will summarize these case studies and provide guidance for accessing, using, and contributingto the web-based knowledge base. The Knowledge Base is now available to use and the final report for this project will be available in early 2015.
|6/19/2014||What are the Best Economic Options for Managing Leakage?|
This Webcast will discuss the newly completed project,
Real Loss Component Analysis: A Tool for Economic Water Loss Control
(project #4372), which will help managers analyze and reduce water utility system leakage in the most cost effective way. The project produced a free user-friendly model that is a major improvement in standard leakage component analysis for the water utility community.
The model supports AWWA M36 and uses the IWA/AWWA Water Audit as input. Ten North American utilities assisted with developing and beta testing the model. Additional funding was provided by the U.S. Environmental Protection Agency. The webinar will specifically cover:
• Goals and Background of Project 4372
• Findings of a Literature Review
• Purpose and Outputs of the Model
• Recommendations on Applying the Model
• Next Steps on Outreach and Training
|6/3/2014||Webcast: Benefits and Disadvantages of Using No Disruption Repair Techniques|
The management of planned activities on water networks is coming under growing pressure to ensure that interruptions to water supplies are prevented or minimized. This has resulted in increasing use of ‘no disruption’ repair techniques. This Webcast reported on the results of project #4513, which undertook a technical appraisal of water company experience of pipeline repair using a range of techniques, covering traditional (‘disruptive’) and ‘no disruption’ repair, with the aim of assessing the impact of the method selected on short- and long-term network performance and on the consequent service to customers.
During the course of the project, data was analyzed from a number of water companies within the United Kingdom to assess the impact of different network repair technologies on subsequent performance of the water distribution network. A Decision Support Tool was developed to enable water companies to select the best technique to use in various circumstances. The Webcast presented the project findings along with guidance on what data to collect in the future to refine this information and support further appraisal.
|4/22/2014||Foundation Knowledge Webcast: Identifying Gaps in Understanding the Benefits/Costs of Boil Water Advisories as a Public Health Protection Measure|
This Webcast provides the results of Water Research Foundation project 4385
, Identifying the Gaps in Understanding the Benefits and Costs of Boil Water Advisories
. The results include a strategic roadmap for future data gathering, analysis, and research aimed at increasing the benefits and reducing the costs of boil water advisories (BWAs), and a systematic review of the practices and results of boil water and other types of advisories (such as do not drink and do not use). One of the key findings to be explored in this Webcast is how to better target precautionary BWAs so that they focus on the situations where health risks are relatively more likely to be evident (and, conversely, minimize the use of BWAs in instances where there is very low likelihood of a public health risk reduction). This includes developing risk-based criteria that utilities and regulatory/public health officials can quickly apply to target BWAs. The final report for this project is now available on the website.
|4/10/2014||Foundation Knowledge Webcast: Pressure Management: Industry Practices and Monitoring Procedures|
Most systems tend to operate at much higher pressure than needed, resulting in increased energy use, increased non-revenue water loss, and excessive main breaks. Project #4321
, Pressure Management: Industry Practices and Monitoring Procedures
developed guidance on best practices and cost/benefits of implementing an optimized pressure management program. The project included an analysis of a year-long pressure monitoring program from 22 utilities. This Webcast focused on these results and a survey of pressure management practices, examining the case study examples and providing recommendations to improve pressure management in drinking water distribution systems. The final deliverables for this project are available on the website.
|4/1/2014||Broadening the National Dialogue on Contaminants of Emerging Concern and Public Health|
Inter-disciplinary communication on the potential human health risks of contaminants of emerging concern (CECs) in drinking water is currently lacking. Water utilities would benefit from partnerships with public health professionals who could provide information on the safety and quality of water supplies. To address this need, the Water Research Foundation hosted an inter-disciplinary workshop as part of
to broaden the national dialogue on this topic last July. The overall objective of this Webcast is to present the key findings from the workshop, and to provide the water community with a first-hand opportunity to better understand the public health perspective on CECs in drinking water. The deliverables for project #4463 are available on the website.
|3/6/2014||Performance Benchmarking for Effectively Managed Water Utilities |
to serve its subscribers and the water and wastewater sectors by providing a practical tool to utilities to conduct assessments and strategically develop key organizational attributes to meet specific goals.
This Webcast included three primary topics:
- Background on the project and summary of primary findings and products
- Description of the recommended process for conducting a self-assessment
- Illustration of how to use the benchmarking tool developed for the project to conduct a self-assessment
The background segment of the webcast described how the project team, with the aid of WRF, participating utilities, the Project Advisory Committee, and six industry associations, developed practice areas and performance measures for each of the Ten Attributes of EUM. The recommended process segment will describe recommendations for identifying members of a benchmarking team, and how team members should be engaged to develop a customized self-assessment and score current and target performance. The final segment of the webcast demonstrated how the benchmarking tool developed for this project can be used to efficiently support the self-assessment process.
|2/25/2014||Water Footprint and Sustainable Water Utilities|
The water footprint concept has been used by agricultural, commercial, and industrial water users to measure and report their water consumption, assess the magnitude of environmental impact(s) arising from this consumption, and identify opportunities for risk mitigation strategies that promote sustainable water use. However, water utilities have not studied and documented the application of this concept in the same manner that other industries have. This Webcast, based on
, will present (1) the growing body of information on the water footprint concept, (2) opportunities for integrating the water footprint concept into water utility planning efforts as a broader means of achieving and maintaining sustainable communities, and (3) guidance that water utilities can follow for implementing this concept within their organizations. The final report for this project is now available.
|2/13/2014||Defining a Resilient Business Model for Water Utilities - Part 2|
This second of two Webcasts based on
will introduce the audience to practices that have the potential to improve the financial resiliency of the water utility industry. The Webcast will present examples of current, emerging, and “out of the box” strategies available to utilities to build a resilient business model.
|2/4/2014||Defining a Resilient Business Model for Water Utilities - Part 1|
The first of two Webcasts based on Project #4366 will introduce the audience to an assessment of the financial condition and revenue model of water utilities in North America and the factors influencing financial performance. While it seems most research and high-profile policy papers today focus on the “cost” side of the financial balance utilities must navigate, this project primarily addresses the revenue and rates side of the equation. The analysis clearly shows that there is not one generalizable “new normal” or inevitable pre-ordained financial outcome for the industry. There are clearly differences between regions, states, and utilities. The analysis shows that although the prevailing revenue model has posed significant problems for many utilities in the recent past, it continues to serve many utilities relatively well.
The project has been completed and a final report and two spreadsheet tools are now available.
|1/30/2014||Foundation Knowledge Webcast: Legal Protection and Claims Management from Infrastructure Failure|
This Webcast is based on
WRF Project 4369
, which provides an industry guide for drinking water utilities on legal protection and claims management issues before, during, and after infrastructure failure events. The guide is based on research, case studies, and interviews with operators and risk management professionals from a cross-section of leading North American water utilities. The compilation of best practices will help utilities improve asset management programs and emergency response practices to minimize legal and claims management issues following failure events; and assess and limit potential liability, both for water system repairs and from damages, to others that can arise from a water line break. The guide provides background information on the legal principles governing this area of the law and effective measures utilities can employ both to defend themselves from the claims of those asserting damages from a break and to prosecute their own claims when breaks are not caused by either the utility's actions or failure to act. It includes checklists of recommended practices before, during, and after failure events. This project also developed three brief training videos that highlight the recommended practices. The guide and videos are now available.
|12/10/2013||Foundation Knowledge Webcast: Consumer Perceptions and Attitudes Toward EDCs and PPCPs in Drinking Water|
Although media reporting on health risks has a tendency to stir up worry, this worry is often misplaced when reports involve the misrepresentation of unsubstantiated scientific evidence. The presence of endocrine-disrupting compounds (EDCs) and pharmaceuticals and personal care products (PPCPs) in the water supply has attracted substantial media attention, particularly in the United States. This has been followed by intense policy discussions, despite the fact there is no concrete evidence to suggest a risk to public health. This Webcast presented the results from
, which explored the public’s perspective on the health risks posed by contaminants, their science, and regulation in an effort to support the water community in the development of fresh and effective communication. The final report and other deliverables for this project are now available on the project page.
|12/3/2013||A Monitoring and Control Toolbox for Biological Filtration|
Biological filtration is rapidly being embraced and implemented by the drinking water industry in North America. However it is often implemented in an incidental manner. Managed biological filtration involves application of sound scientific and engineering principles to the design, monitoring, operations, and control of the biological processes as well as the physical filtration process. To this end, practical monitoring and control tools for biological filtration are needed.
identified and evaluated a number of tools at numerous utilities across North America. These tools included existing and innovative methods for on-line and off-line analysis of various forms of organic carbon that are relevant to biological filtration, biological activity in the biological filters, general water quality parameters, and operational parameters. In addition, various control tools were evaluated. The outcome of the project includes a final report and guidance manual, both of which are currently available. This Webcast included descriptions of the monitoring and control tools and practical tips on how they can be used to enhance biological filtration operations and performance.
|11/12/2013||Foundation Knowledge Webcast: Developing Surveillance and Response Systems for Water Distribution Systems |
This Webcast presented the results from project #4430
Developing Surveillance and Response Systems for Water Distribution Systems
. The Water Research Foundation funded this project to gather lessons learned from the nationwide deployment of Surveillance and Response Systems (SRSs) (formerly Contamination Warning Systems [CWSs]) and share this information with the entire industry. Lessons learned were derived from utilities that implemented both full scale and partial SRSs. A full scale SRS includes online water quality monitoring, customer complaint surveillance, enhanced security monitoring, public health surveillance, system integration, and consequence management (which includes sampling and analysis). The final report is now available on the project page.
|11/7/2013||Foundation Knowledge Webcast: Water Utility Executive Leadership for the 21st Century |
Despite the centrality of executive leadership to utility success, very little is known about water utility chief executive officers (CEOs). Who are utility CEOs? How do they think about their work? What do CEOs do on the job? This Webcast presents highlights from
, which begins to answer these questions with the first comprehensive study of water utility executives in the United States. The project presents the defining characteristics of the executive corps that lead U.S. water utilities, and define a starting point for the selection and development of future executive leaders.
The report for the project is now available.
|10/24/2013||Foundation Knowledge Webcast: Steering Innovation in Water Utility Finance and Management|
The water industry is transforming from one of known challenges and steady growth that can be addressed by engineering solutions to one of a spectrum of uncertainties. These uncertainties will likely require a suite of strategies to mitigate and master the most probable and consequential trends and associated risks. Utility responses to uncertainties, risks, costs, and innovative opportunities will help shape public perceptions of water utilities and their leaders, and in turn, shape the state of the industry. This Webcast presented a summary of a forum of over 20 high level managers from many of WRF’s large water utility subscribers and their assessment of trends in the industry, the risks associated with these trends, and relevant strategies. The forum was conducted as part of
The final report is now available.
|9/26/2013||Foundation Knowledge Webcast: Changes in Water Use Under Regional Climate Change Scenarios |
This Webcast presents findings from
, which examined the potential impacts of future climate scenarios on water demand. The demand for water is highly dependent on climate, and weather-sensitive water uses typically comprise a large component of total water use. Geographical differences in climate and variability in observed weather conditions lead to differences in water usage patterns across different regions and seasonal time periods. Changes in climate from historical conditions, both in terms of mean weather conditions and variability, should be expected to influence the demand for water. The Webcast will illustrate the importance of climate in shaping water demand patterns and will estimate potential impacts from future climate scenarios for a set of case study utilities.
|9/19/2013||Foundation Knowledge Webcast: A Decision Tool for Earthy/Musty Taste and Odor Control |
The presence of MIB and/or geosmin, which cause taste and odor issues, can create significant public relations problems for water utilities. This Webcast presents the results from
, which explores the effect of water quality on human sensitivity to earthy/musty odors and public perceptions, and presents a decision-making tool to help utilities develop reasonable and defensible treatment goals for managing geosmin and MIB taste and odor events.
The final report and decision-making tool for this project are now available
|8/13/2013||Foundation Knowledge Webcast: Water Quality Impacts on Cr(VI) Removal and Cost|
By the time of this Webcast, the California Department of Public Health is expected to have published a proposed Maximum Contaminant Limit (MCL) for hexavalent chromium (Cr[VI]) in drinking water. The U.S. Environmental Protection Agency is also evaluating new toxicological data on Cr(VI) as part of an effort to evaluate the need to develop a national primary MCL for Cr(VI) in drinking water. This Webcast will address these developments by presenting the results of
WaterRF project #4450
, which evaluated the removal of Cr(VI) from 10 groundwater sources in an effort to understand the impact of different water quality parameters on the performance and cost of three Cr(VI) treatment technologies: Weak-Base Anion (WBA) resin, Strong-Base Anion (SBA) resin, and Reduction-Coagulation-Filtration (RCF). Based on the treatment performance, capital and annual Operations & Maintenance cost estimates were developed for each treatment technology. A Web-based Cr(VI) treatment cost tool was also developed and posted on a dedicated website (www.CrVITreatmentCosts.com
). The Webcast presents the capital and annual cost estimates developed, and includes a discussion of the assumptions behind the cost tool and instructions on how to use it. Both the Webcast and Cr(VI) cost tool are free and available to the public.
|8/8/2013||Foundation Knowledge Webcast: Impact of Galvanic Corrosion on Partial Lead Service Line Replacement |
This Webcast presents findings from
, supported by the Water Research Foundation, the District of Columbia Water and Sewer Authority, and the Providence Water Supply Board, to examine the issue of lead in drinking water following partial lead service line replacements (LSLRs). Partial LSLRs are the result of divided ownership of the customer service line, and they can result from required regulatory replacements or can be incidental to infrastructure renewal or repair efforts by the utility. The Webcast reports on two experimental programs that examined lead release in controlled laboratory settings using different types of commercially available couplings. It also reports on long term field data from partial LSLRs in the two participating utilities, which were done as part of large lead service line replacement programs. The final report for this project will be available before the Webcast on the #4349 project page.
|7/11/2013||Foundation Knowledge Webcast: State of the Science of Opportunistic Pathogens in Premise Plumbing |
This Webcast presented information on the state of the science of opportunistic pathogens in premise plumbing (OPPPs) based on a
WaterRF report and Expert Workshop (project #4379)
. The Webcast focused on five model OPPPs: Legionella pneumophila, Mycobacterium avium Complex (MAC), Pseudomonas aeruginosa, Acanthamoeba spp., and Naegleria fowleri. Current understanding of their epidemiology, microbial ecology, methodology, and engineering controls was discussed.
|6/25/2013||Foundation Knowledge Webcast: Risk Governance: An Implementation Guide for Water Utilities |
This Webcast discussed the results from the recently published WaterRF report,
Risk Governance: An Implementation Guide for Water Utilities
). The Webcast addressed issues of organizational culture, Board level structures and discussions on risk, practical steps for implementation, and international good practices. Participants will gain an appreciation of key drivers for good risk governance, the role of the appointed risk manager, and the key features of a risk management capability.
|6/4/2013||Foundation Knowledge Webcast: Guidance for the Treatment of Manganese|
Manganese (Mn) is a frequent treatment challenge for drinking water utilities. In 2006, the EPA estimated that 13% of all groundwater and 21% of all surface water systems provide treatment for Mn. Yet given the prevalence of Mn occurrence and the multiple methods that utilities use to deal with Mn, there are few comprehensive references regarding the management of Mn. To meet this need, the project team has prepared a comprehensive manual titled, Guidance for the Treatment of Manganese
).The manual is intended to provide guidance to utilities and water professionals for the effective control of Mn through source water management and the design and operation of Mn treatment processes.
|5/17/2013||Foundation Knowledge Webcast: UV System Start-Up, Operations, and Avoidance of Off-Spec Water|
This Webcast focuses on helping both operations and engineering staff at utilities to understand what the priorities are for running a UV system and a brief overview of why they are important. The Webcast was developed in conjunction with staff from Greater Cincinnati Water Works to enhance their training as they learn to better operate their new UV system.
|5/16/2013||Foundation Knowledge Webcast:Advances in PAC Adsorption for DBP Precursor and Micropollutant Removal|
Recent developments in the production of powdered activated carbon (PAC) have resulted in a plethora of products that have the potential to expand the use of PAC beyond traditional treatment objectives such as taste and odor control. This Webcast summarizes results from recently completed WaterRF project #4294 that evaluated the use of PAC for the combined control of disinfection by-product (DBP) precursors and organic micropollutants. The effectiveness of PACs prepared from different base materials (bituminous coal, lignite, wood, coconut shells) will be discussed. In addition, the effect of PAC particle size on performance will be addressed. The final report for
will be available by the end of May.
|2/26/2013||Foundation Knowledge Webcast: Changing Mindsets to Promote Design of Sustainable Infrastructure|
This Webcast discusses the results of
. This project developed a framework to enable an organizational transformation toward implementing sustainable water infrastructure and operations.
|1/17/2013||Foundation Knowledge Webcast: A Toolbox for Energy and Greenhouse Gas Management|
, which was jointly funded by New York State Energy Research and Development Authority, Global Water Research Coalition, and the Water Research Foundation, this Webcast presents(1) comparative information on the tools and methodologies for energy and GHG analysis specific to the water sector, and (2) findings on an overall global framework approach to GHG accounting for the water sector. Participants will learn about the latest methodologies from around the world, as well as relevant case studies from water utilities in the United States and abroad who are tackling these issues.
|12/18/2012||Foundation Knowledge Webcast: Best Practices for Prestressed Concrete Cylinder Pipe Condition Assessment|
This Webcast presents the results of WaterRF
, which evaluates condition assessment technologies and methods for prediction of service life or failure margin in use for prestressed concrete cylinder pipe (PCCP). The project summarizes and integrates the published literature for all condition assessment and monitoring technologies; the results of an industry survey of water utilities, technology stakeholders, and consultants; and the results of a workshop where utility experiences and needs were discussed.
|11/8/2012||Foundation Knowledge Webcast: Implementing Renewable Energy at Water Utilities|
Renewable energy systems can help water utilities reduce energy costs and increase their sustainability. This Webcast, based on
, presents information about renewable energy use at water utilities including the opportunities, barriers, risks, and contracting types for installing a renewable energy project. The discussion is supported by case studies from water utilities that have implemented successful renewable energy projects.
|10/2/2012||Foundation Knowledge Webcast: Guidance on Complying with Stage 2 D/DBP Regulation|
Featuring several of the nation’s leading disinfection byproduct (DBP) and small systems researchers, this Webcast provides small and medium utility decision makers with introductions to DBPs and the Stage 2 regulation, and provides them with an overview of methods that can be used for understanding potential compliance issues, determining appropriate compliance “goals”, and evaluating strategies for attaining their goals. These form the basis of the Guidance Manual and Web tool being developed for
|8/14/2012||Foundation Knowledge Webcast: Lead(IV) Oxide Formation and Stability in Drinking Water Distribution Systems|
Lead(IV) oxide is a low solubility corrosion product that can form on lead service lines supplying water with a free chlorine residual. This solid is only stable in the presence of free chlorine, and conditions that would lead to the rapid chemical reduction of lead(IV) oxide and associated lead release should be avoided. This Webcast, based on
, presents the results of research that identified conditions favorable for lead(IV) oxide formation and determined water chemistry conditions that control lead(IV) oxide dissolution. The final report for this project should be available by the end of 2012.
|7/17/2012||Foundation Knowledge Webcast: Reservoir Management for Supply Planning and Water Quality|
The Water Research Foundation hosted a special topic session on reservoir management at the 2012 AWWA Annual Conference in Dallas. This Webcast highlights the session and features the latest Water Research Foundation research on reservoir management.
|7/10/2012||Foundation Knowledge Webcast: Long-Term Performance of Ductile Iron Pipes |
This webcast discusses 3 specific issues:
* Pitting corrosion rates of ductile iron pipe; *Characterization of external corrosion pits in ductile iron pipe; and * Sampling and condition assessment of ductile iron pipes.
|5/31/2012||Foundation Knowledge Webcast: Hexavalent Chromium: Cost Implications of a Potential MCL |
This Webcast, co-sponsored by the American Water Works Association (AWWA), presents preliminary results of a joint Water Research Foundation and AWWA project on potential national cost implications of a hexavalent chromium [Cr(VI)] standard for drinking water. Preliminary costs were estimated for different possible Cr(VI) thresholds based on analysis of existing occurrence and treatment data.
|5/24/2012||Foundation Knowledge Webcast: Effective Microbial Control Strategies for Main Breaks and Depressurization|
This webcast provided an update on Water Research Foundation project 4307
, Effective Microbial Control Strategies for Main Breaks and Depressurization
. Project 4307 is intended to improve utility responses to main breaks and depressurization events to better protect public health. The study team of HDR Engineering and American Water will provide an update on work completed to date and the results of a Risk Management Workshop conducted in April 2012.
|5/1/2012||Foundation Knowledge Webcast: Guidance for Managing Long Term Performance of Asbestos Cement Pipe|
This Webcast discussed the results of project #4093
, which explored the current conditions and state of the art in management of AC water main assets. This includes pipe deterioration and failure, condition assessment, remaining service life prediction, repair, rehabilitation and replacement, and health and waste management protocols. These key results were placed into the context of risk management and economic-based decisions, which can be used as a guide to manage AC pipe inventories. The final report for project is now available on the project page.
|3/29/2012||Foundation Knowledge Webcast: Distribution System Water Quality Control Demonstration|
There are multiple opportunities, yet unrealized in many drinking water systems, to improve water quality and to save money in doing so. This is a surprising statement in that water systems already use the latest technology to monitor various physical and chemical aspects of the water system. This Webcast discussed the results of project #4286
which demonstrates the use of three tools for process control of water systems.
|3/19/2012||Foundation Knowledge Webcast: Competency Model Development and Application to Meet Water Utility Workforce Needs|
Competency models analyze jobs to identify the skills and personal characteristics that drive superior performance. They have successfully been used in many industries to identify good candidates, to structure training, and to guide personal development in a job. This Webcast describes six models that were developed for critical positions in the water field. The researchers describe how the models were developed, how they can be used in water utilities, and the process for creating additional models.
|2/29/2012||Co-Sponsored Webcast: Hexavalent Chromium – New Insight and Research Results|
Hexavalent chromium has generated some hot debates over its potential as a drinking water contaminant. The debates have spurred several Foundation research projects and this Webcast shares results of three of them. This Webcast should prove crucial to utility managers, public health professionals, and others involved in drinking water policy as they make related risk-management decisions.
|2/1/2012||Foundation Knowledge Webcast: Development of a Bench-Scale Test to Predict the Formation of Nitrosamines|
This Webcast provides results from WaterRF project #4180. The purpose of this project was to develop a bench-scale test to simulate nitrosamine formation in a full-scale distribution system. In addition, bench-scale tests with different pre-oxidants were conducted to evaluate the impact on the formation and control of N-nitrosodimethylamine (NDMA). Moreover, tradeoffs in the formation of other disinfection by-products (DBPs) were evaluated. The report for this project should be available in 2012.
|1/26/2012||Foundation Knowledge Webcast: Toxicity Datasheets and Microsheets |
For over 20 years, Toxicity Datasheets and Microsheets have provided unique and valuable information to the water industry. In this Webcast, scientists at the heart of the preparation and revision of these two databases outline the databases’ contents and unique features as well as case studies that exhibit their successful utilization.
|12/13/2011||Foundation Knowledge Webcast: Evaluation of Analytical Methods for EDCs and PPCPs via Interlaboratory Comparison|
|12/6/2011||Foundation Knowledge Webcast: Assessing Changes in Single Family Water Use|
This Webcast presents results from residential end use studies conducted over the past 15 years that show where changes have occurred. While the economic downturn may have contributed to recent demand reductions, a careful examination of water use patterns since the 1990s shows that the lion’s share of demand reductions in recent years are related to water efficiency efforts, beginning with the federal plumbing code changes approved in 1992.
|11/10/2011||Foundation Knowledge Webcast: Forecasting the Future: Progress, Change and Predictions for the Water Industry|
As Peter Drucker once famously noted, “The only thing we know about the future is that it will be different.” There is nothing more true about the water industry. Over the past few years, we have faced change and adapted. But what do the next 10 to 20 years have in store for us?
|11/3/2011||Foundation Knowledge Webcast: Expanding Water Utility Services Beyond Water Supply to Improve Customer Satisfaction and Utility Effectiveness|
This Webcast explores options and provides practical information to water utilities to help them make well-informed decisions regarding potential “supplemental service” offerings. Supplemental services refer to any good or service provided by a water utility that is beyond the utility’s core function of delivering safe and reliable drinking water.
|10/13/2011||Foundation Knowledge Webcast: State of the Science of Hexavalent Chromium|
This webcast summarizes the current state of the science regarding hexavalent chromium regulations, chemistry, occurrence, health effects, analysis, and treatment, as well as identifies gaps in that science. A brief summary of upcoming work on this project (#4404 - Trace Level Chromium-6 Occurrence and Analysis: Reviewing and Testing the State of the Science) is given.
|9/1/2011||Foundation Knowledge Webcast: Rates and Revenues: Water Utility Leadership Forum on Challenges of Meeting Revenue Gaps|
In the spring of 2011, the Water Research Foundation convened a working group of over 20 water utility representatives from across the country to discuss strategies to bridge the ominous gap facing many of the nation’s utilities. Over the course of two days, the representatives discussed many different strategies, heartily endorsing some and setting aside others. The Webcast presents the strategies discussed in the forum and their context for ensuring financial stability for water utilities across the country.
|8/23/2011||Foundation Knowledge Webcast: Assessing Customer Preferences and Willingness to Pay|
Water utilities in the United States are challenged to maintain service levels in the face of aging infrastructure, population growth, and increasingly stringent regulations. Because the federal and state funding available to water utilities is diminishing, most of the revenue for needed investments will come from customers through increased rates and fees. In this context, water utilities can gain from integrating customer preferences into investment planning. Economic valuation surveys allow for the estimation of customer willingness-to-pay, or the value customers place on a proposed investment. This input from customers can be used by the utility to improve investment prioritization and rate setting, and to strengthen its relationship with its customers.
|7/28/2011||Foundation Knowledge Webcast: Development of a UV Disinfection Knowledge Base|
The practice of drinking water UV disinfection has evolved considerably over the last 10 years in terms of regulations, science, and technology. Accordingly, utility personnel, engineers, and state regulators have questions on UV disinfection that include who is installing UV disinfection, what are the design criteria, how efficient is UV dose monitoring and dose pacing, how reliable are UV system components, how much labor is involved maintaining UV systems, and what are the lessons learned from UV implementation.
|6/22/2011||Foundation Knowledge Webcast: Climate Change Impacts on the Regulatory Landscape|
Water utilities have always had to balance competing public policy objectives such as maintaining sufficient water supply, ensuring compliance with drinking water standards, guarding against threats to homeland security, offering affordable water for all, and minimizing environmental impact. In the next few years, U.S. water suppliers will face the most complex simultaneous compliance challenge ever: climate change, and specifically, greenhouse gas (GHG) emissions controls.
|6/2/2011||Foundation Knowledge Webcast: State-of-Science on Perchlorate Treatment Technologies and Regulations|
Perchlorate (ClO4-) contamination continues to be an important environmental issue due to its potential health impacts, the number of areas with impacted groundwater, and new legislation. In February 2011, the USEPA announced that it will move forward to develop a new drinking water standard for perchlorate based on new data indicating risks associated with perchlorate contamination. USEPA intends to publish a proposed regulation and analysis required by Safe Drinking Water Act (SDWA) for public review and comment within 24 months from January 2011.
The white paper will be available this summer.
|5/10/2011||Foundation Knowledge Webcast: Decision Support System for Sustainable Energy Management|
Water utilities today are faced with increasing energy costs and concerns about related greenhouse gas emissions. This Webcast, based on Foundation Project #4090, will help utilities understand:
1. Why a tool is needed to help make decisions about energy management.
2. What is the basis for the decision support system and the ways the tool can be used.
3. How the tool is structured and used for energy/emission decision-making, with some utility examples of tools used.
|4/26/2011||Foundation Knowledge Webcast: Opportunities and Challenges of Nanomaterials for the Drinking Water Community|
Nanomaterials are generally defined by size, with at least one dimension that measures less than 100 nm. The term ‘nanomaterials’ includes nanoparticles and nanostructured materials, and they may be naturally occurring, inadvertently generated, or engineered. In recent years, engineered nanomaterials have garnered increasing attention due to their special size-related properties and many applications.
|3/31/2011||Foundation Knowledge Webcast:Energy Efficiency in the Water Industry: A Compendium of Best Practices and Case Studies|
After manpower, energy is the largest cost item for most drinking water and wastewater companies. Recognizing this, and additional pressures on energy demand, the Global Water Research Coalition (GWRC) set up a project to identify and document current best practices in energy efficiency. This project, Energy Efficiency in the Water Industry: A Compendium of Best Practices and Case Studies (#4270), will be PDF only and available in the next few weeks.
|3/8/2011||Foundation Knowledge Webcast: Lead and Copper Corrosion Control in New Construction|
Many factors associated with the construction of new buildings can cause problems with drinking water, including aesthetics (taste and odor), microbial growth, and corrosion or degradation of premise plumbing. The installation procedures, types of materials used, and flushing protocols following post-installation can influence the persistence of these problems. This Webcast focuses on the results of Project #4164, Lead and Copper Corrosion Control in New Construction.
|2/22/2011||Foundation Knowledge Webcast: Distribution System Integrity: The Pressure is On When the Water Pressure is Off|
The presentation covers the past 10 years of pressure management research with emphasis on new studies of backflow events, pressure monitoring, and risk analysis. The presentation explores the concept of pressure transients and examines potential risks from contaminant intrusion. Utilities can use backflow sensing water meters, advanced metering infrastructure, and pressure monitors to better characterize their distribution systems.
|2/17/2011||Foundation Knowledge Webcast: A Balanced Approach to Water Conservation: Removing Barriers and Maximizing Benefits|
Water utilities have increasingly come to appreciate the value of Water Use Efficiency (WUE) as a means to complement investments in long-term water supplies and infrastructure and to manage shortages associated with droughts or other short-term emergencies. Many water utilities, as they attempt to incorporate WUE into their overall resource planning, struggle to design and implement effective programs. This struggle stems partly from unfamiliarity with or lack of knowledge about WUE and partly from perceived or actual difficulties integrating WUE and the utility’s existing resource and financial planning.
|1/18/2011||Foundation Knowledge Webcast: Developing a Vision and Roadmap for Source Water Protection for Drinking Water Utilities|
Utilities need a unified strategy to develop coherent, consistent, cost-effective, and socially acceptable source water protection programs. The Cadmus Group, Inc. led a rigorous effort with participation by dozens of water utilities to develop a vision that every public community water supply will be protected by an active source water protection program by 2025, and a roadmap which outlines key action items from a local, regional, and national basis.
|1/11/2011||Foundation Knowledge Webcast: Implementing Coastal and Inland Desalination Facilities and Assessing Seawater Intake Systems|
Desalination is increasingly considered in coastal and inland regions for meeting near-term and future water supply needs. To help overcome obstacles associated with desalination in the United States, the Water Research Foundation will soon release two reports and decision support tools. This webcast features the results of Project 4078, "Guidance for Implementing Seawater and Brackish Water Desalination Facilities" and Project 4080, "Assessing Seawater Intake Systems for Desalination Plants."
|12/7/2010||Foundation Knowledge Webcast: North American Residential Water Usage Trends and Applications for Utilities|
This Webcast, based on the published report North American Residential Water Usage Trends and Applications for Utilities (Order #4031), focuses on (1) understanding residential water-usage behavior patterns and trends, (2) assessing the impact of those patterns on water utility operations, and (3) providing data that can be correlated with future trends for planning purposes.
|12/2/2010||Foundation Knowledge Webcast:Strategies for Managing Total Coliform and E. coli|
The primary objective of this completed project #3116 was to develop a comprehensive, practical guide for managing and responding to total coliform and E. coli occurrences in drinking water distribution systems. This presentation reviews strategies for identifying the cause(s), evaluating the significance of, and responding to positive coliform events. Additionally, several new coliform monitoring, tracking, and data integration approaches describes with regard to their potential use in drinking water distribution systems.
|10/21/2010||Foundation Knowledge Webcast: Applied Research Successes in Leakage Management|
Water utilities are challenged to manage the leakage volumes that inevitably occur in water distribution systems. Most water utilities practice reactive leakage control by merely responding to leaks or water main breaks after they have ruptured and often caused visible disruption. However, a number of innovative technologies have evolved in recent times to give water utilities the capability to proactively contain leakage to acceptable levels. Work carried out under the completed Water Research Foundation Project, Leakage Management Technologies (Project #2928/Order #91180), investigated the use of several of these innovations and the successful results of several applications is presented.
|10/12/2010||Foundation Knowledge Webcast: Engineered Biofiltration for Enhanced Hydraulic and Water Treatment Performance|
This presentation, a review of the Water Research Foundation Tailored Collaboration with the City of Arlington, TX, focuses on methods for enhancing the performance of standard biofiltration processes through improving the health of biological activity.
|10/7/2010||Foundation Knowledge Webcast: Best Practices for Energy Efficiency in the Water Supply Industry|
This Webcast presents the findings of Water Research Foundation project #4223 and discusses energy efficiency best practices for drinking water systems in the areas of management, plant improvement, water treatment, water distribution, water conservation, and alternative/renewable energy. Information on financial assistance and partnerships is also be provided.
|9/30/2010||Foundation Knowledge Webcast: Simultaneous Compliance Decision Tool for Small and Large Systems|
This Webcast demonstrates the functionality of the decision tool from project #3115 and trains people about how to use the tool for analyzing their specific simultaneous compliance issues.
|9/14/2010||Foundation Knowledge Webcast: Accuracy of In-Service Water Meters|
This Webcast presents results from Project #4028, "Accuracy of In-Service Water Meters at Low and High Flow Rates
." This study, scheduled to be completed fall 2010, addresses the off-the-shelf accuracies of new water meters commercially available in 2006 that claimed to meet the AWWA standard for that particular meter. The research also considers the impact of throughput and the influence of particulates on meter performance.
|9/9/2010||Foundation Knowledge Webcast: Algal Toxins - Source Water Management and Treatment|
This Webcast presents WaterRF research on (1) source water management strategies for cyanobacteria and (2) drinking water treatment processes to control cyanobacteria, such as granular activated carbon (GAC), ozone, and membrane treatment.
|7/8/2010||Foundation Knowledge Webcast: Groundwater Well Research Needs|
The Water Research Foundation and the National Ground Water Association co-sponsored a one-hour Webcast titled, "Groundwater Well Research Needs: Current Problems Facing Utilities Using Groundwater Wells." The Webcast is based on ongoing Project #4240, "Water Well Research Priorities Workshop." The purpose of this project is to develop a ten-year research plan to address water well knowledge gaps and needs. The Webcast summarized both preliminary literature reviews and surveys in addition to the outcomes of the workshop.
|5/25/2010||Foundation Knowledge Webcast: Assessment of Inorganics Accumulation in Drinking Water System Scales and Sediments|
This Webcast presents an overview of the basic concept of inorganics accumulation and release within drinking water distribution systems by discussing the key mechanisms involved and highlighting findings from previous research and case studies.
|4/29/2010||Foundation Knowledge Webcast: Managing Lead in Pipe Scales - Understanding How Water Quality Affects Lead Release|
This Webcast, based on Project #4064: Influence of Water Chemistry on the Dissolution and Transformation Rates of Lead Corrosion Products, will shed light on how the interaction of water quality and pipe scales affects lead release.
|4/22/2010||Foundation Knowledge Webcast: Nitrosamines and Other Emerging Nitrogenous Disinfection By-Products - Formation, Occurrence, and Control|
This webcast includes three presentations that highlight findings from several Foundation studies on the formation, occurrence, and control of N-DBPs, including nitrosamines.
|4/20/2010||Assessing Current Asset Management Practices Using SAM GAP|
It is said that good management comes from asking the right questions. But when it comes to strategic asset management, knowing which questions to ask isn't always easy. WERF and WaterRF research have developed a Web-based asset management gap analysis tool—SAM GAP—that not only asks the right questions, but provides guidance when your first question is, "Where do I start?"
|3/16/2010||Foundation Knowledge Webcast: Chloride to Sulfate Mass Ratio and Galvanic Connection Changes – Impact on Lead Leaching|
This Webcast is a one-hour presentation on Foundation project #4088, Chloride to Sulfate Mass Ratio (CSMR): Changes from Water Treatment and its Impact on Lead Leaching in Potable Water, published in June 2010. It presents the impacts of CSMR on lead leaching from plumbing materials, as well as the roles of alkalinity, pH, and corrosion inhibitors in potentially mitigating corrosion in high CSMR waters.
|3/2/2010||Foundation Knowledge Webcast: Water Conservation - Customer Behavior and Effective Communications|
This webcast presents an overview of Water Research Foundation project #4012, Water Conservation: Customer Behavior and Effective Communications. It details research objectives, methodologies, and presents some findings and conclusions.
|2/11/2010||Foundation Knowledge Webcast: Localized Treatment for Disinfection By-Products|
This Webcast highlights the results of the completed Foundation project 3103, Order Number 91254, "Localized Treatment for Disinfection By-Products". The purpose of this project was to investigate cost-effective approaches for reducing or removing disinfection by-products from a drinking water distribution system by focusing on reducing water age and on treating only the flow necessary in the distribution system to comply with the Stage 2 Disinfectants and Disinfection By-products Rule.
|2/4/2010||Foundation Knowledge Webcast: Workforce Sustainability - Strategies for Partnership in Workforce Planning and Development|
This webcast presents findings from Foundation project 4206, "Water Sector Workforce Sustainability Initiative", which validated mission critical industry positions and explored methods for collaboration locally, regionally, and nationally between private and public agencies to help organizations proactively address the workforce crisis and focus on workforce sustainability now and into the future.
|1/21/2010||Foundation Knowledge Webcast: Criteria for Optimized Distributions – Recommended Metrics and Approach|
This Webcast is based on the results of the Water Research Foundation project, "Criteria for Optimized Distribution Systems" (Project #4109), which presents a practical set of easily measured parameters that, when actively and effectively managed, drive excellence in overall distribution system water quality, operations, and infrastructure management.
|11/19/2009||Foundation Knowledge Webcast: Integrated Urban Water Management (IUWM)|
This Webcast provides an overview of Project #4008 Integrated Urban Water Management Manual. IUWM is an approach for urban water utilities to plan and manage urban water systems (i.e., water supply, wastewater and stormwater systems) to minimize their impact on the natural environment, to maximize their contribution to social and economic vitality and to support overall community improvement.
|11/12/2009||Foundation Knowledge Webcast: Water Resource Planning Options for Climate Change|
Based on Project #3132 Incorporating Climate Change Information in Water Utility Planning: A Collaborative, Decision Analytic Approach, this Webcast introduces a methodology that water utilities can use for water supply planning and management.
|11/3/2009||Foundation Knowledge Webcast: Managing Distribution Integrity - Old Problem, New Tools|
This Webcast highlights research using new tools to analyze key water distribution performance issues of backflow and water leaks. This research was performed in Continuous System Leak Monitoring--From Start To Repair #3183 and Cross-Connection and Backflow Vulnerability: Monitoring and Detection #3022.
|10/22/2009||Foundation Knowledge Webcast: Implementing Desalination Facilities: Experiences from Inland to the Coast|
In this Webcast, Robert Raucher and Janet Clements of Stratus Consulting, provide an overview of Project #4078, "Guidelines for Implementing Seawater and Brackish Water Desalination Facilities", and a brief demonstration of the Planning Issues Matrix decision support tool currently in development. This 90-minute Webcast includes additional speakers as both coastal and inland drinking water providers are implementing desalination treatment to augment their strained existing supplies; and, each scenario has unique technical, regulatory, and social challenges to resolve.
|10/1/2009||Foundation Knowledge Webcast: Greenhouse Gas Emissions - Strategies for Water Utilities|
This Webcast focuses on the published project, Greenhouse Gas Emission Inventory and Management Strategy Guidelines for Water Utilities (project #4156/order #91265). and assists water utilities in understanding the need and purpose for quantifying greenhouse gas (GHG) impacts of their operations, and provide the information necessary to prepare GHG inventories in accordance with accepted standards. The Webcast also provides a framework to develop and evaluate management strategies for reduction of GHG emissions and respond to the impacts of climate change.
|9/3/2009||Foundation Knowledge Webcast: The Effect of Nitrification on Corrosion in the Distribution System|
This Webcast covers the findings of Project #4015, which provides some new fundamental and practical insights to nitrification issues. The results and practical tools developed by this project can be used by utilities and consumers to predict nitrification events and resulting water quality problems, and be used to make rational decisions about practices such as inhibitor dosing, plumbing material selection, and the use of whole house filters.
|8/6/2009||Foundation Knowledge Webcast: Helping Water Utility Customers Pay Their Bills|
This Webcast focuses on project #4004, "Best Practices in Customer Payment Assistance Programs." Project #4004 has brought some order to the field of customer payment assistance by applying a business process framework. The Webcast provides an overview of this framework and shows how it can be used to conduct a “gap analysis” of an individual utility’s program. The Webcast presentation also features a deeper look at the ins and outs of deferred payment plans and the possibilities for better performance measurement in this field.
|7/29/2009||Foundation Knowledge Webcast: Biological Filtration|
This three hour Webcast on Biological Filtration takes place simultaneously with a workshop on biological filtration hosted by the Birmingham Water Works Board. The Webcast covers the use of biological filtration and focuses on the engineering and operation of such filters from a national perspective. The event also highlights local research performed on this technology. The target audience for this Webcast is utility managers and operators considering the implementation or optimization of biological filtration in their treatment facilities.
|5/6/2009||Foundation Knowledge Webcast: Strategic Asset Management - Benefit Cost Analysis Tool|
This Webcast presents the Benefit Cost Analysis Tool (BCT). The tool is intended to assist asset managers (even those without highly developed economic analytical skills or experience) in decision making based on a systematic assessment of the benefits and costs of any proposed project. BCT was an international effort, identified by the Global Water Research Coalition, led by Water Environment Research Foundation (WERF) and cofounded by the Water Research Foundation and the United Kingdom Water Industry Research (UKWIR). The tool was developed by GHD Consulting.
|4/15/2009||Foundation Knowledge Webcast: Water and Wastewater Treatment Chemicals - Shortages and Skyrocketing Prices|
This Webcast includes a discussion of findings of the Water Research Foundation project “Supply of Critical Drinking Water and Wastewater Treatment Chemicals – A White Paper for Understanding Recent Chemical Price Increases and Shortages” (Project 4225).
This Webcast presents what is known about the issue and the driving forces behind the recent price and chemical availability concerns. It also presents critical knowledge gaps and potential research needs, important stakeholders and potential sources of information that can help clarify the issue, as well as recommendations for next steps towards effectively managing the issue.
|3/26/2009||Foundation Knowledge Webcast: Controlling Algae in Water Treatment Plants|
This Webcast includes a discussion of findings of the Water Research Foundation project “Strategies for Controlling and Mitigating Algal Growth within Water Treatment Plants” (Project 3111). The Webcast discusses key findings on occurrence, characteristics, and control strategies for algae within water treatment plants. The findings are based on information gathered through a national survey of more than 70 water treatment plants and detailed case studies with algae characterization of selected water treatment plants. The algal control strategies discussed include chemical, operational, and design strategies. Discussion also includes emerging strategies such as sonication. The findings of this Webcast will be useful for water treatment plant managers, operators, and consultants who are addressing algal growth and related issues.
|2/12/2009||Foundation Knowledge Webcast: Improving Water Utility Capital Efficiency|
This Webcast discusses best practices in capital programs from within and without the water industry, examining capital efficient program development and management, as well as individual project implementation based on the research recently conducted for the Foundation's Improving Water Utility Capital Efficiency study (Project #3119).
|12/4/2008||Foundation Knowledge Webcast: Copper Pitting - What Utilities Need to Know|
This Dec. 4, 2008 Webcast, provides results from the recently published Foundation report, Assessment of Non-Uniform Corrosion in Copper Piping (Project #3015/Order #91217), and Foundation project, "Non-Uniform Corrosion in Copper Piping- Monitoring Techniques" (Project #3109). Featured Presenter: Paolo Scardina, Research Scientist with the Department of Civil & Environmental Engineering at Virginia Polytechnic Institute & State University.
|10/30/2008||Foundation Knowledge Webcast: Quagga and Zebra Mussel Control Strategies|
This Webcast provides an overview of the "Workshop on Quagga/Zebra Mussel Control Strategies for Water Users in the Western United States" that took place in April 2008 as well as provide current information from three leading experts about the quagga mussel infestation occurring in the West.
Renata Claudi from RNT Consulting Inc. provides background information on and treatment options for quagga mussels. Ronald Zegers from Southern Nevada Water Authority (SNWA) discusses their quagga mussel experience, an introduction on the Workshop, and the results of the Chemical Inactivation and Barriers portion of the Workshop, Ricardo DeLeon from Metropolitan Water District of Southern California (MWD) discusses their quagga mussel experience and the results of the Population Management and Standard Methods QA/QC portions of the Workshop.
|9/10/2008||Foundation Knowledge Webcast: Strategies for Workforce Management and Knowledge Retention at Water Utilities|
In the September 10, 2008 Webcast, presenters Linda Blankenship and Marcia Isbell, Principle Consultants with EMA, Inc., discuss how utilities can develop and implement a comprehensive strategy to retain valuable knowledge and transfer that knowledge to new workers joining the utility. The Webcast also discusses the most effective workforce practices in areas such as compensation and rewards, training and certification, generational and cultural awareness, recruitment, and outreach. The Webcast is based on projects #3120 and #4005.
|7/31/2008||Foundation Knowledge Webcast: Town Hall Discussion|
The Water Research Foundation presented our first Town Hall Webcast. The featured speaker was Chair David Rager and the Webcast was moderated by Executive Director Robert Renner. The purpose of this one hour Webcast was to provide an avenue for subscribers to learn firsthand what is going on at the Foundation as well as provide a format where questions and concerns may be addressed.
|6/3/2008||Condition Assessment and PCCP Pipe: Critical Components of North American Asset Management|
For this 2008 Webcast, Frank Blaha, Senior Project Manager, reviews the Foundation-funded condition assessment (CA) research related to various pipe materials and appurtenances. One such example discussed is the recently completed project, Condition Assessment Strategies and Protocols for Water and Wastewater Assets (Project #3048). This report, co-sponsored by the Foundation and WERF, provides a good overview of various CA technologies and techniques.
|3/6/2008||Foundation Knowledge Webcast: Toxicological Relevance of Endocrine Disruptors and Pharmaceuticals in Drinking Water|
In the Webcast, presenters Shane Snyder of Southern Nevada Water Authority and Rick Pleus of Intertox Inc. discuss analytical methods and occurrence data on endocrine disrupting compounds and pharmaceuticals, as well as the exposure comparison to phytoestrogens in plants. The work and results of the toxicological risk assessment of the chemicals of interest are also presented. The Webcast is based on project #3085, which is co-sponsored by the Foundation and the California Urban Water Agencies.
|10/7/2007||Development of a Utility Energy Index|
This Webcast covers the approach to the project, "Energy Index Development for Benchmarking Water and Wastewater Utilities" (#3009), which included a water utility survey, an overview of the survey data, and the development of the model and the metric. It also includes examples of how water utilities can use the metric, and the US Environmental Protection Agency’s intended use of the metric for its ENERGY STAR program.
|5/8/2007||Foundation Knowledge Webcast: Decision Support System for Water Distribution System Security|
This Foundation Knowledge Webcast was based on project #3086, "Decision Support System for Water Distribution System Security." This Webcast discussed approaches for detecting and mitigating possible toxicological attacks on a distribution network. John Cook of Advanced Data Mining and Mark Cline of Charleston Water System lead the presentation.
|1/17/2007||Foundation Knowledge Webcast: Susceptibility of Distribution Systems to Negative Pressure Transients|
This one hour Webcast, featuring Kala Fleming and Mark LeChevallier of American Water discussed how distribution systems respond to events that create rapid pressure drops, such as pump shutdowns, flushing, and firefighting.
|10/25/2006||Foundation Knowledge Webcast: Risk Analysis Strategies for Better and More Credible Utility Decisions|
This one hour Webcast, featuring Simon Pollard, PhD, of Cranfield University discussed risk analysis strategies based on an international workshop and how a risk analysis framework can help utility managers evaluate and support their decision making.
|8/24/2006||Foundation Knowledge Webcast: Changing Disinfectants and Distribution System Water Quality|
This one-hour Webcast reviewed the four classes of water quality impacts identified by the researchers: 1) Changes in microbial quality, 2) Changes in chemical quality (DBPs), 3) Changes in chemical quality (corrosion, metal release, color-producing compounds and particle characteristics) , and 4) Changes in aesthetic quality.