Matrix Effects on Cryptosporidium Oocyst Recovery

Abstract

Through extensive statistical and laboratory analyses, this study found a set of likely causes of poor Cryptosporidium oocyst recovery in Portland Water Bureau source water from the Bull Run watershed at certain times of the year. The report presents a modification to EPA Method 1623 that improved oocyst recovery for Portland Water Bureau, and this research contributes to an improved understanding of the role that water matrices play in inhibiting oocyst recovery. Tailored collaboration partner: City of Portland Water Bureau. Published in 2014.

Resources

Subscriber

Matrix Effects on Cryptosporidium Oocyst Recovery

Report

#4348

03/19/2014

View Executive Summary

Related Projects

Recently

Project #80

Filtration of Giardia Cysts and Other Particles Under Treatment Plant Conditions

Completed

Delineates conditions that have contributed to or permitted passage of Giardia cysts by the rapid-rate filtration process. Evaluates applicability to full-scale operation of the findings of pilot-scale studies...

View more details

Project #181

Biological Particle Surrogates for Filtration Performance Evaluation

Completed

Determines biological particles that mimic the behavior of pathogenic species such as viruses, bacteria, and protozoan cysts in coagulation and filtration. Also ascertains relationships between removals of test...

View more details

Project #1751

Site Specific Risk Assessment Tools for Land Applied Biosolids

Completed

This report compiles information from a wide variety of sources into a documented tool for regulators and land applicators to perform site-specific assessments of microbial risk for land-applied...

View more details

Project #5033

Demonstrating the Effectiveness of Flushing for Reducing the Levels of Legionella in Service Lines and Premise Plumbing

In Progress

Legionella are pervasive environmental bacteria that can incidentally cause severe and sometimes fatal infections upon inhalation. Because legionella inhabit engineered environments and proliferate in warm, stagnant premise water...

View more details

Project #5118

Understanding the Mechanisms of Chlorine and Chloramine Impact on Opportunistic Pathogens in Distribution Systems

In Progress

While opportunistic pathogens (OPs) pose significant health threats, they can be managed effectively in well-operated drinking water distribution systems. Understanding the mechanisms of OP inactivation in complex real-world...

View more details

Project #5100

Rapid Detection and Quantitation of Active Microorganisms

In Progress

The detection and rapid quantitation of active microorganisms in complex microbial communities are important for informing process monitoring and control and risk assessment in the water sector. However...

View more details

Case Studies on Water Sector Interdependencies

Matrix Effects on Cryptosporidium Oocyst Recovery

Abstract

Resources

Matrix Effects on Cryptosporidium Oocyst Recovery

Filtration of Giardia Cysts and Other Particles Under Treatment Plant Conditions

Biological Particle Surrogates for Filtration Performance Evaluation

Site Specific Risk Assessment Tools for Land Applied Biosolids

Demonstrating the Effectiveness of Flushing for Reducing the Levels of Legionella in Service Lines and Premise Plumbing

Understanding the Mechanisms of Chlorine and Chloramine Impact on Opportunistic Pathogens in Distribution Systems

Rapid Detection and Quantitation of Active Microorganisms

Case Studies on Water Sector Interdependencies