Occurrence of Legionella pneumophila In Drinking Water Distribution Systems
Please log in to access this resource
This resource is only available to Public Plus or Subscriber accounts. If you are not a subscriber, you can register for a Public Plus account. Need to login as a Subscriber and unsure if you have login credentials? Try resetting your password. If we have that email on file, you will receive an automated email with a reset link. If, after resetting your password, you still don't have subscriber access, please Contact Us.
Do you have a Public+ account? Login Now
Legionella pneumophila is a significant drinking water contaminant due to its role in causing Legionnaires' Disease (LD), a potentially fatal illness. While LD risk is largely determined by water management within buildings, public water systems also contribute to L. pneumophila exposure and must play a role in its management. However, limited data exist on its occurrence in distribution systems (DSs) and associated factors.
Project 5156, Occurrence of Legionella pneumophila in Drinking Water Distribution, was a two-year study involving fifty-seven utilities monitoring L. pneumophila in water distribution systems across various regions, system sizes, and disinfectant types. The study aimed to develop a response and communication protocol for utilities following positive L. pneumophila detections; collect data to examine the relationship between L. pneumophila occurrence and disinfectant residuals; analyze the associations between disinfectant type, concentration, and system characteristics; and identify locations at higher risk for L. pneumophila presence. Additionally, a benchmark risk analysis was conducted to assess the risk of L. pneumophila in distribution systems.
In this webcast, presenters will share key findings from the study, offering practical recommendations for monitoring and managing L. pneumophila in public water systems. The research enhances our understanding of L. pneumophila occurrence in distribution systems and provides valuable insights to help utilities improve water management practices and protect public health.
Presenters:
- Tim Bartrand, Executive Director, ESPRI - The Environmental Science Policy and Research Institute
- Mark W. LeChevallier, PhD, Dr. Water Consulting, LLC
Moderator:
- Grace Jang, PhD, Research Principal, The Water Research Foundation