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Five Most Common Causes of Legionella at New Facilities (and How to Avoid Them)

You face a higher risk of a deadly Legionella outbreak at your facility when you might least expect it. Newly constructed facilities, facilities that have recently undergone repairs or renovations and facilities with dormant or inactive piping systems that don’t have processes that align with American Water Works Association (AWWA) piping disinfection guidelines are at higher risk of waterborne pathogens contaminating their facility’s water system. Below are five of the most common reasons why Legionella outbreaks occur:

  1. AWWA piping disinfection guideline processes were not followed during the construction of new or renovation of existing potable piping distribution systems.
  2. Piping was properly disinfected but left stagnant and was not sanitized again before commissioning.
  3. The water management program for cooling towers did not include the proper selection of biocides or recommended dosing rates were not administered.
  4. The incoming water from municipal water supply did not have sufficient disinfectant before entering the facility.
  5. Professionally trained experts were not included in the development, monitoring or management of the water management plan.

Any of these things can contribute to waterborne pathogens, like Legionella, to be present in water systems.

You can protect your facility from a Legionella outbreak and prevent problems from other waterborne pathogens by properly disinfecting your water distribution systems, newly repaired potable piping systems and sections of piping that have been dormant. Having an expert partner help you navigate through establishing, managing and executing a water management plan in alignment with AWWA piping disinfection guidelines, can help your team manage the workload and save time and money – and potentially even save lives.