Fleet Pump & Service Group

Contact Us

* Required

Thank you for your submission.
Someone will contact you shortly.

  • Home
  • News
  • 15/06/26

Triple Clear: Reducing Legionella Risk in Domestic Hot Water Systems

Domestic hot water systems can create conditions that support the growth of bacteria, including Legionella, particularly within storage tanks and recirculation loops where water temperatures and flow patterns may vary throughout the system.

In New York City, routine testing for Legionella in domestic (potable) tap water is not universally required for all properties. However, it is mandatory for hospitals and residential healthcare facilities statewide, which must routinely sample and manage their potable water systems according to NYS Department of Health regulations.

Key Requirements by Property Type

  • Hospitals & Healthcare Facilities: Covered Article 28 general hospitals and residential healthcare facilities must have an active, written Legionella culture sampling and water management plan in place for potable water systems. Routine sampling is integrated into their management plans.
  • Standard Residential & Commercial Buildings: For standard domestic water, NYC strictly mandates testing and registration for cooling towers (building air-conditioning/refrigeration systems) rather than the domestic tap water itself.

To help address these challenges, many facilities are incorporating filtration technologies such as Triple Clear® on the domestic hot water circulation line. By continuously treating water as it recirculates through the system, these solutions help reduce biological contaminants and support overall water quality.

Effective Legionella risk management requires a comprehensive approach that may include temperature control, routine monitoring, system maintenance, and appropriate treatment technologies. Filtration systems like Triple Clear can serve as an important component of a broader water management strategy, helping building owners and facility managers maintain safer, cleaner domestic hot water systems while supporting occupant health and safety.

As awareness of waterborne pathogen risks continues to grow, proactive measures to improve domestic hot water quality are becoming an increasingly important part of modern building operations.

OTHER NEWS STORIES