Including filter system and high-performance PFUnA filter.
PFUnA is one of the PFAS people ask about when exploring persistent, hard-to-remove chemicals in drinking water. It can enter sources through industrial uses and the breakdown of related fluorinated compounds, and it doesn’t break down quickly. Portland homeowners often hear about PFUnA after a utility notice, local reporting, or private testing, and the best response is to consider treatments aimed specifically at PFAS reduction.
Because PFUnA is usually present at very low levels, it won’t change the smell, taste, or appearance of water from your Portland tap, which makes testing important if you’re concerned. PFAS like PFUnA act differently than everyday issues such as chlorine, sediment, or hard water, so simple cartridge filters may not be enough. For many homes in Portland, a whole-house solution can be a sensible way to lower exposure during drinking, cooking, showering, and general household use.
For whole-house reduction of PFUnA, homeowners most commonly rely on a granular activated carbon (GAC) filter as the single most effective residential option. GAC media offers a very large surface area that can adsorb many organic contaminants, including various PFAS. Performance with PFUnA depends on selecting the correct carbon type, allowing sufficient contact time, and maintaining appropriate flow rates — which is why a properly sized whole-house carbon tank typically outperforms small, fast-flow cartridges.
At Mr. Pure Water we typically address PFUnA with a whole-house GAC system installed at the main water entry so treated water serves every tap in Portland homes. Systems are chosen based on household water use to avoid short contact times that can diminish PFAS capture. Like all adsorption media, the carbon must be serviced and replaced on schedule to maintain consistent removal as the media becomes loaded. If you have a recent water test, we’ll use it to recommend the right whole-house GAC configuration for PFUnA reduction.