Detecting and Differentiating Opportunistic Premise Plumbing Pathogens to Determine Efficacy of Control and Treatment Technologies

Jun 9, 2019
Project Update

During this reporting period, the team started to examine how the developed methods for opportunistic premise plumbing pathogens (OPPPs) measurement will perform under real-world conditions, especially when evaluating effects of mitigation. Strains of the four target OPPPs were inoculated into a full-scale simulated hot water rig, which had acclimated with local municipal water for over two years and was set at a lower temperature (37°C) for several months prior to the inoculation to stimulate the colonization and regrowth of OPPPs that may be naturally present in the tap water. Weekly water sampling for five continuous weeks after the inoculation is underway.