PFAS Water Filters

The right technologies do; ordinary filters mostly don't. Reverse osmosis removes 94 to 99%+ of PFAS per EPA data, PFAS-selective ion exchange takes water to non-detect, and certified carbon block cartridges are tested to specific reduction claims. Loose granular activated carbon averaged about 73% in a Duke and NC State field study and fades as it loads. The reliable signal is certification: look for NSF/ANSI 53 or 58 with an explicit PFOA/PFOS claim.

Match the technology to the scope. For the whole house: PFAS-selective ion exchange (ResinTech SIR-110-HP, WQA Gold Seal) to non-detect, or the Pioneer adsorption cartridge for very high levels (8 chemicals to non-detect including GenX). On a budget for a small city home: the FloPlus certified carbon block cartridge (5 compounds to 99.82%). At the kitchen tap, an under-sink RO adds a point-of-use polish (94 to 99%+ per EPA data).

Standard pitcher filters are not certified for PFAS. A basic carbon pitcher cartridge is designed for chlorine taste and odor, with far too little media and contact time for a reliable PFAS claim. Some newer pitcher and faucet products advertise PFOA/PFOS reduction; before trusting any of them, check for an NSF/ANSI 53 certification that names PFOA and PFOS explicitly. For a dependable result, use certified RO at the tap or a whole-house ion exchange or adsorption system.

Our PFAS lineup runs $349 to $4,195. The certified FloPlus whole-house cartridge is $349, the whole-house ion exchange system is $2,495, the well water package with UV is $2,595, and the high-capacity Pioneer system is $3,895 ($4,195 metered). The EPA 537.1 lab test that sizes all of this is $349. Budget for media: the Pioneer replacement cartridge is $2,295 every 12 to 36 months and ion exchange resin is $595 per cubic foot.

They solve different scopes. Reverse osmosis is the point-of-use answer: 94 to 99%+ removal at one tap per EPA data. Ion exchange is the whole-house answer: PFAS-selective resin takes every tap, shower, and appliance to non-detect with no drain and no electricity. Many homes with confirmed PFAS run both: ion exchange for the house, RO as the final polish on drinking water. Your lab result and your budget decide.

It depends on your level and your concern. Drinking and cooking water is the main exposure route, so an under-sink RO (94 to 99%+ PFAS per EPA data) or the certified FloPlus cartridge covers the highest-impact use on a budget. A whole-house system protects every tap, shower, and appliance and is the right call when your test shows meaningful levels, when you have young kids filling cups at bathroom sinks, or when you simply want the problem gone everywhere.

Many homes with confirmed PFAS run both: whole-house ion exchange to non-detect, plus RO at the kitchen tap as a final polish. Send Aidan your lab result and he will tell you honestly whether one stage is enough.

Partially, and that is the problem. A Duke and NC State field study found granular activated carbon filters averaged about 73% PFAS removal, with performance fading as the carbon loads. That is meaningful background reduction, not a guarantee.

The exception is a certified carbon BLOCK: the FloPlus cartridge is tested and certified by IAPMO R&T against NSF/ANSI 53 to reduce five PFAS compounds (PFOA, PFOS, PFHxS, PFNA, PFHpA) by up to 99.82% for a rated 40,000 gallons. Certification with a stated capacity is the line between a real claim and marketing.

It scales with your PFAS level and your water chemistry. The Pioneer cartridge runs 100,000+ gallons at very high levels (3,000+ ppt) and 350,000+ gallons at a typical 100 ppt, which works out to roughly 12 to 36 months in a real home. The FloPlus cartridge is rated 40,000 gallons or about 12 months. Ion exchange resin life depends on the level plus competing ions (TOC and sulfate occupy exchange sites), so we estimate it from your lab report.

PFAS media is single-use: it cannot be regenerated for PFAS duty. The metered Pioneer option counts gallons so you replace on data instead of guessing.

No. Boiling concentrates PFAS rather than removing it: water evaporates, the PFAS stays. Letting water sit, freezing it, or using a standard fridge filter does not remove it either.

PFAS comes out of water three proven ways: reverse osmosis, PFAS-selective ion exchange, and certified activated carbon with adequate contact time. That is the entire honest list.

Drinking and cooking are the primary exposure routes. Current research indicates skin absorbs very little PFAS during normal bathing, so health agencies focus their limits on ingestion. If your levels are modest and budget is tight, protecting the drinking water with an under-sink RO or the certified FloPlus cartridge addresses most of the real exposure.

That said, homes with high confirmed levels usually choose whole-house treatment anyway: it covers toothbrushing, kids drinking from bathroom taps, humidifiers, and pets, and removes the question entirely.

Yes. The ResinTech SIR-110-HP we use carries WQA Gold Seal certification for potable water contact (that is what the HP designation means). It is a chloride-form strong base anion resin that selectively grabs PFAS, nitrate, and perchlorate as water passes through.

Because the resin holds PFAS permanently rather than releasing it on a regeneration cycle, there is no brine discharge and no PFAS sent to your septic or drain. Spent resin is removed and replaced as a sealed media change.