Including filter system and high-performance E. coli filter.
Finding E. coli in household water is a warning that bacteria may be entering your supply somewhere along the line. In Lake Mary and nearby Seminole County neighborhoods like Heathrow and Timacuan, contamination can originate from breaks in distribution lines, plumbing cross-connections, or vulnerable private wells—especially after heavy rain in our humid subtropical climate. Water can appear clear while still carrying microbes, and most homeowners only discover an issue after a test, advisory, or recurring taste or odor problems.
You may also hear the name E. coli O157, a strain that’s linked with more serious illness; whether it’s general E. coli or E. coli O157, the priority for Lake Mary households is keeping bacteria out of the water you drink, cook with, and bathe in. Temporary measures like boiling will treat water at one faucet but won’t protect the whole house—from the kitchen to showers and laundry. A whole-house solution maintains consistent protection at every tap throughout your home.
The most effective single-filter option for controlling E. coli at the point of entry is a whole-house ultraviolet (UV) disinfection system. Installed where water enters the home, a UV unit uses ultraviolet light to inactivate microorganisms as water flows through the chamber. Because it works continuously and without chemicals, UV protects kitchens, bathrooms, and appliances across the house—an appropriate choice when bacterial contamination is the main concern rather than taste or mineral issues common in our hard Lake Mary water.
UV disinfection performs best when water is clear enough for the light to reach microbes, so Lake Mary homes often pair a sediment prefilter ahead of the UV to remove cloudiness that can shield bacteria. When the system is sized for your home’s flow rate and maintained with regular lamp and sleeve changes, UV can deliver steady protection against E. coli and other bacteria without adding a disinfectant taste like chlorine. For homeowners focused on reducing bacterial risk throughout their property, UV is typically the first technology we recommend.