Including filter system and high-performance Coliform Bacteria filter.
Coliform bacteria are a group of microorganisms used to indicate how well water is being protected from contamination. A positive test for coliforms can mean untreated water is entering the system through a damaged well casing, a cross-connection, or plumbing intrusion. Often there’s no change in taste or smell, so laboratory testing is the only way to spot them reliably. You may also see the phrase total coliforms on your report, which refers to the wider group of these indicator organisms.
In Spray-area homes, a common response to finding total coliforms is to confirm the result with repeat sampling, fix likely entry points, and install a whole-house barrier for ongoing protection. Total coliforms aren’t the same as E. coli, but their presence can indicate conditions that might allow other microbes to be present. Because contamination can be intermittent, many homeowners prefer treatment at the point where water enters the house so every faucet and appliance is covered.
For treating coliform bacteria, the single most effective whole-house option is usually a UV disinfection system installed at the point of entry. Ultraviolet light inactivates microorganisms as water flows through the chamber, protecting the entire home without adding chemicals. This method targets bacteria directly rather than relying on taste-and-odor media, and when sized to your home’s peak flow it delivers coverage to every tap.
UV systems perform best when incoming water is relatively clear because heavy sediment can shield microbes from the light; that’s why many Spray homes pair a prefilter with UV. If you’re choosing one primary technology specifically for total coliforms, UV is the reliable workhorse. Mr. Pure Water can help size and install the UV unit for your plumbing and peak demand, and provide routine lamp and sleeve maintenance so the system continues protecting your household water.