Water management planning to prevent Legionnaires’ disease | Department of Public Health

City of Philadelphia

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Proper water system maintenance is essential for controlling growth of Legionella, the bacteria that causes Legionnaires’ disease. Developing a water management program is an important first step for making sure that your building’s occupants and neighbors are safe from infection.

The Department of Public Health has created several tools to help building owners and operators develop water management programs that are specific to their facilities.

If you would like more information about developing a water management program, call the Acute Communicable Disease Program at (215) 685-6742.

Legionella and Cooling Towers: Reducing the Risk of Waterborne Diseases (video)
Watch our webinar, presented on May 21st, 2026, by the Philadelphia Department of Public Health. Presentation topics include Legionnaires’ disease, building water systems, cooling towers, and water management program (WMP) guidance.

Name	Description	Released
Water quality monitoring log PDF	A sample log form on which to record a facility's water quality, including pH, temperature, disinfectant and conductivity.	November 9, 2018
Cooling towers & Legionnaires’ disease: What you need to know PDF	An introduction to the spread and prevention of Legionnaires' Disease, including a risk assessment tool and links to additional resources.	September 6, 2024
Cooling Tower (CT) maintenance checklist PDF	A checklist that can be used to assess the condition of a facility's cooling tower and treatment room.	November 9, 2018

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