Historical
ASHRAE Guideline 12-2020
Managing the Risk of Legionellosis Associated with Building Water Systems
Provides information and guidance for control of legionellosis associated with building water systems. Applies to new and existing centralized hot and cold potable building water systems and to nonpotable building water systems in human-occupied commercial, institutional, multiunit-residential, and industrial buildings, including hotels, office buildings, hospitals and other health care facilities, assisted living facilities, schools, universities, commercial buildings, industrial buildings, and centralized systems in multifamily residential buildings. While buildings with noncentralized building water systems and single-family residential buildings are not included, some of the information may be useful for such building water systems. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]