Including filter system and high-performance Fecal Coliform filter.
Finding fecal coliform in your household water is a warning that contaminants may be entering your supply. These bacteria are indicator organisms—when they show up, they can reveal sanitary issues and possible routes for other harmful microbes. You might see cloudy water, sediment, or unusual smells, but often fecal coliforms are present without any visible signs. In Marathon, whether you’re on municipal lines or a private well or cistern, intrusion can occur after heavy runoff, storm flooding, or if a well cap or casing is damaged by coastal corrosion or storm exposure.
Problems can happen even with treated systems when pressure changes disturb lines or backflow lets contaminated water in. Because fecal coliforms indicate a contamination risk rather than only an aesthetic issue, start with proper lab testing and pick treatment that fits the results. Residents in Marathon and the surrounding Florida Keys often look for solutions after a lab report, a boil-water notice, or repeated worries about water safety; a clear plan protects your household and avoids unnecessary equipment.
To treat fecal coliform where water enters the house, the most effective single-filter option is a whole-house ultraviolet (UV) disinfection system. Rather than trapping particles like a sediment cartridge, UV uses light to inactivate microorganisms as water passes through a stainless-steel chamber. When sized and installed correctly, UV is commonly used to control bacteria and other microbes without adding chemicals or altering taste—an appealing choice for Marathon homeowners who want continuous, automatic disinfection at every tap.
UV systems work best when the water is clear enough for light to penetrate, so they’re frequently teamed with a prefilter to remove turbidity, rust, and silt that can hide microbes. The UV unit remains the primary disinfection step, targeting fecal coliforms as water is used throughout your home. Mr. Pure Water can help Marathon residents size the unit, choose placement away from coastal corrosion risk, and set a maintenance schedule so your system continues protecting showers, laundry, and kitchen taps reliably.