Including filter system and high-performance E. coli filter.
Finding E. coli in household water is a warning sign that unwanted microbes may be entering your supply somewhere along the line. In Fort Mason, that can happen through damaged distribution lines, plumbing cross-connections, or vulnerable private wells, and contamination often traces back to human or animal waste. Water can look perfectly clear while still carrying bacteria, so many local homeowners only discover a problem after testing, a public advisory, or repeated water-quality issues in their houses around town.
You may also hear the name E. coli O157, a strain noted for more serious illness; whether it’s general E. coli or E. coli O157, the priority for Fort Mason families is keeping bacteria out of drinking, cooking and bathing water. Short-term responses like boiling are useful at a single faucet but don’t secure every outlet. A whole-house solution helps ensure the water throughout your Fort Mason home is treated consistently, rather than relying on point fixes.
For protection where water enters Fort Mason homes, the most effective single-filter option is whole-house ultraviolet (UV) disinfection. Installed inline at the main shutoff, a UV system uses ultraviolet light to inactivate microorganisms as water flows through the chamber. Because it treats continuously and without chemicals, it safeguards kitchens, bathrooms, laundry and showers all at once — a practical choice when bacterial contamination is the main concern rather than taste or hard-water minerals.
UV systems perform best when water is clear enough for light to reach microbes, so they’re often paired with a sediment prefilter to cut cloudiness that can shield bacteria. In Fort Mason’s hard-water environment, proper prefiltration and correct sizing for your home’s flow rate, plus routine lamp and sleeve maintenance, help UV provide steady protection against E. coli and other bacteria. Because UV doesn’t use chlorine, it won’t change your water’s taste while addressing bacterial risk throughout the house.