scope:

Purpose. The purpose of this report is to disseminate information and guidance to Army installations to help minimize Legionella contamination in building water systems. This document generally focuses on the maintenance aspects of building water systems with respect to Legionellosis. Though some design guidance can be gained from this document, it is recommended that the applicable UFC is referenced. The building water systems in this report include:

a. Potable and Emergency Water Systems b. Heated Spas c. Architectural Fountains and Waterfall Systems

d. Cooling Towers Including Fluid Coolers (Closed-Circuit cooling Towers) and Evaporative Condensers

e. Direct Evaporative Air Coolers, Misters (Atomizers), Air Washers, and Humidifiers

f. Indirect Evaporative Coolers

Applicability. This Manual applies all Department of the Army Directorate of Public Works (DPW)