Case Study: Sediment Filtration on Cold Water System Reduces Legionella Risk
After a Northeast university achieved non-detect Legionella levels in their building’s hot water system with a LiquiTech® Copper-Silver Ionization System, they faced a new obstacle when Legionella was detected in the cold water system due to water stagnation caused by the building’s mixed-use and fluctuating occupancy.
Partnering with LiquiTech, the university implemented an innovative solution to install a LiquiTech® Sediment Filtration System on the cold water supply. By preventing sediment from entering the building, the cold water system quickly returned to non-detect Legionella levels.
The combined power of copper-silver ionization for the hot water system, sediment filtration for the cold water system, and an ongoing service partnership with LiquiTech has helped the university maintain non-detect Legionella levels and provide clean, safe water to occupants.
The results:
- 0% Legionella positivity in the hot water system since 2014 with copper-silver ionization.
- 0% Legionella positivity in the cold water system since 2015 with sediment filtration.
- 82% reduction in sediment in the incoming cold water supply with sediment filtration.
- 50% Before sediment filtration
- 0% After sediment filtration
With a multi-faceted approach, this university successfully controlled Legionella and proactively reduced the risk of future outbreaks. Learn more about their journey in the full case study here.
