![]() Water System Maintenance and Disinfection Preventing exposure to Legionella in the workplace starts with awareness about water systems in which the bacteria could grow, and continues with water system maintenance to prevent growth and checking for unexpected growth in case preventative measures fail. For information on remedial actions during and after an outbreak, see the Outbreak Response page. This page does not address appropriate response to suspected or known Legionellosis outbreaks. Heating, Ventilation and Air Conditioning (HVAC) Air Distribution Systems.Cooling Towers, Evaporative Condensers and Fluid Coolers.It discusses General Considerations, including water system maintenance and disinfection and recommended personal protective equipment (PPE), as well as system-specific sections on controls for: This page addresses several of these aspects of water management programs to help employers develop and implement appropriate Legionella control measures. ![]() ![]() ![]() Avoiding conditions that promote Legionella growth, particularly through appropriate design and maintenance, reduces workers’ exposure risks. Water management programs that effectively prevent Legionella growth in water systems rely on control and prevention measures, including good system design, proper facility and equipment maintenance, and routine cleaning and disinfection. These pieces of equipment generate water sprays and aerosols that, if not properly controlled, can disperse Legionella and other microbes over a wide area. Cooling towers, evaporative condensers and fluid coolers can create ideal conditions for microbial growth, including Legionella. ![]()
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