Completed
Legionella is a bacterium found in drinking water distribution systems, premise plumbing, hot tubs, hot water heaters, cooling towers, fountains, and other building water systems. At high enough concentrations and when inhaled, Legionella can Legionnaire's Disease, a fatal disease when not treated with antibiotics. An ad hoc committee of the National Academies of Sciences, Engineering, and Medicine will review the state of science with respect to Legionella contamination of water systems.