The National Academy of Sciences, Engineering and Medicine released its ' Management of Legionella in Water Systems ' report during a webinar today. This report addresses the state of the science on Legionella contamination in drinking water, including amplification within water systems, quantification, prevention and control and research needs. The full project scope is available on the study's webpage . Notably, the report includes specific recommendations aimed at reducing Legionella incidence: • Require water management plans for all public buildings; • Expand current Centers for Medicare & Medicaid Services memo to require monitoring for Legionella in hospitals and health care facilities; • Register and monitor cooling towers; • Require water heaters heat water to 140 degrees F and that hot water be maintained above 131 degrees F to distal points in building plumbing (e.g. before it enters mixing valve for faucets); • Maintain minimum disinfectant residuals throughout public water system distribution systems; • Guidance for threshold levels of Legionella that should trigger action; and • Emphasis on collaboration and action by multiple entities to control Legionella Legionella is a genus of bacteria found in drinking water distribution systems, premise plumbing, hot tubs, hot water heaters, cooling towers, fountains and other building water systems. Legionella is the pathogen most frequently responsible for waterborne disease outbreaks in the United States associated with drinking water. When at high enough concentrations and inhaled, Legionella can cause legionellosis, which includes Legionnaires disease and Pontiac fever. Legionnaires disease can be fatal. Members can review the following resources on Legionella : AWWA Resources • Waterborne Pathogens Resource page • Premise Plumbing Policy Statement • AWWA Water Science article: “Occurrence of culturable Legionella pneumophila in drinking water distribution systems” • M48 Waterborne Pathogens manual Centers for Disease Control and Prevention Resources • Legionella page • Developing a Water Management Program to Reduce Legionella Growth & Spread in Buildings toolkit Environmental Protection Agency • Technologies for Legionella Control in Premise Plumbing Systems document Association of State Drinking Water Administrators • Building Water Operator Certification white paper Questions on Legionella can be directed to Steve Via , AWWA’s director of federal relations.