Legionellosis: Risk Management for Building Water Systems
ASHRAE Standard Project Committee 188

1. PURPOSE
The purpose of this standard is to establish minimum Legionellosis risk management requirements for building water systems.

2. SCOPE
2.1 This standard provides minimum Legionellosis risk management requirements for the design, construction, commissioning, operation, maintenance, repair, replacement and expansion of new and existing buildings and their associated (potable and non-potable) water systems and components.
2.2 This standard applies to human-occupied commercial, institutional, multi-unit-residential and industrial buildings. This standard does not include single-family residential buildings. Only where specifically noted in this standard, shall certain building water systems or parts of building water systems be exempt
2.3 This standard is intended for use by owners and managers of human-occupied buildings, excluding single-family residential buildings. This standard is also intended for those involved in design, construction, installation, commissioning, operation, maintenance and service of centralized building water systems and components