Including filter system and high-performance Legionella filter.
Legionella is a bacterium that can occur naturally and sometimes multiplies inside building plumbing when conditions allow. The species most often referenced is Legionella pneumophila, which can inhabit water heaters, storage tanks, low-flow sections of pipe, and other parts of a home’s system. It becomes a greater concern when water is turned into mist or spray in showers, faucets, and some appliances. Because you can’t rely on taste, smell, or appearance to spot it, testing and preventive steps matter for Fidelis homeowners.
Even if your incoming water is treated, Legionella can still grow inside household plumbing when temperatures are favorable or water sits unused. Factors like warm water, intermittent flow, scale and sediment build-up, and biofilm on pipe walls all encourage bacterial persistence. While many homeowners focus on drinking water, everyday exposures in the shower or from sprayers are often how risk occurs. Managing water quality as it enters your Fidelis home is a useful part of a broader control strategy.
If you want a single whole-house filter to physically remove Legionella, a true barrier filter made for microbial reduction — such as a whole-house ultrafiltration system — is the most effective option. Ultrafiltration uses a fine membrane to strain out bacteria-sized particles instead of relying on adsorption for taste and odor, so it’s well suited to reducing organisms like Legionella pneumophila before water reaches showers and fixtures. Installed at the main water line, this approach treats water used throughout your Fidelis residence rather than only at a single tap.
A whole-house ultrafiltration unit works best when paired with prefiltration to remove larger sediment and protect the membrane so it performs reliably over time. Regular maintenance is necessary — barrier filters require periodic servicing to avoid fouling and preserve flow. Because controlling Legionella also depends on in-home conditions, Fidelis homeowners should monitor water heater temperatures, eliminate dead-end lines where water can stagnate, and use fixtures regularly. Mr. Pure Water can assess your property and recommend a whole-house configuration that fits your home and supports comprehensive Legionella reduction.