Water Filter for Lead and PFAS: Certified Picks We Checked by Model Number

Written by Sara Ibrahim. Sara researches home and kitchen products for Cupindy. · Published October 2026 · Last reviewed October 10, 2026

Plenty of filters say they remove lead or PFAS. Far fewer are certified to. Every pick below was checked against the certifier's own listing, model number by model number, along with the replacement filter you'll keep buying.

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How we checked: on October 10, 2026 we looked up every model on this page in NSF's and IAPMO's public certification listings and read each maker's data sheet or manual. We haven't lab-tested these filters ourselves.

First, read your water report or test your tap

A filter only makes sense once you know what's in your water. If you're on city water, start with your utility's annual report: “EPA requires all community water systems to prepare and deliver an annual water quality report called a Consumer Confidence Report (CCR) for their customers by July 1 of each year.” Find your local report on EPA's site.

Lead is the one a city report can miss, because it usually comes from plumbing, not the treatment plant: “The most common sources of lead in drinking water are lead pipes, faucets, and fixtures.” EPA notes that lead pipes are more likely in homes built before 1986, and “Since you cannot see, taste, or smell lead dissolved in water, testing is the only sure way of telling whether there are harmful quantities of lead in your drinking water.” EPA's Protect Your Tap guide shows how to check your service line.

For PFAS, EPA is blunt: “If PFAS have not been measured in your water, or if PFAS have been measured but are below federal limits, a filter may not be useful to you.” On a private well there's no utility report at all, so a test from a certified lab comes first; EPA's private well page explains where to start.

What “certified for lead” and “certified for PFAS” actually mean

A filter is certified for lead when a certifier lists that exact model for lead reduction under NSF/ANSI 53, or NSF/ANSI 58 for reverse osmosis. For PFAS, the listed claim reads PFOA/PFOS or Total PFAS. EPA's own advice: “If you use a filter, make sure you use a filter certified to remove lead.”

The two standards that matter

NSF/ANSI 53 covers health claims for pitchers, faucet mounts and most under-sink filters; NSF/ANSI 58 covers reverse osmosis. NSF says the 2018 edition of 53 added a PFOA and PFOS claim, and the 2022 edition “expanded the chemical reduction claims to include newer subclasses of PFAS compounds”, the Total PFAS line on some listings. Most filters still carry the older claim: “As of April 2024, filter certifications focus on removing the chemicals PFOA and PFOS, which are two specific types of PFAS,” EPA says.

“NSF 42 certified” or “tested to” is not a lead or PFAS certification

NSF/ANSI 42 covers taste, odor and chlorine. Several best-selling under-sink filters on Amazon put “NSF/ANSI 42 Certified” in their titles right next to the words lead and PFAS. When we looked those models up on October 10, 2026, the listings we found were for NSF/ANSI 42 and 372, not for lead or PFAS reduction. WQA's search returned nothing for any brand that day, so a WQA listing can't be ruled out. That's why the two-minute check below is worth doing.

NSF 372 means lead-free parts, not lead removal

In NSF's listings, 372 marks a product whose own parts meet the “lead free” plumbing limit, a weighted average of 0.25% lead or less. It says nothing about taking lead out of your water.

Certified doesn't mean down to EPA's 4 parts per trillion

EPA's 2024 limit for PFOA and for PFOS in public water is 4.0 parts per trillion each. Current filter standards “do not yet indicate that a filter will remove PFAS down to the levels EPA has now set for a drinking water standard,” EPA says. A. O. Smith's data sheet shows the gap: its PFOA and PFOS test passed against a 0.07 µg/L target, or 70 parts per trillion. Even so, EPA says “reducing levels of PFAS in your water is an effective way to limit your exposure.”

How to check any filter's certification in two minutes

Which type of water filter do you need?

Swipe the table sideways on a phone.

City water: read the report, then test the tap if your home is older or you're unsure about its pipes. Well water: test first, then match each certified claim to what the lab found. Either way, “Most home water filters—like pitcher or fridge filters—are not designed to remove germs from your water,” the CDC notes. Treating the whole house is a bigger project, covered in our whole-house water filter guide.

Best budget water filter for lead: a faucet mount

If lead is your worry, the simplest certified fix sits on the faucet itself. Only the water you choose to filter runs through it, and a lever switches back to plain tap water for washing up.

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Water filters for PFAS: what's certified, and where EPA's rule stands

EPA lists three filter types that can be effective against PFAS: activated carbon, reverse osmosis and ion exchange resins. Whichever you pick, the certification still has to name PFOA/PFOS or Total PFAS for your exact model.

Where EPA's PFAS rule stands (October 2026)

The 2024 rule set enforceable limits of 4.0 parts per trillion for PFOA and PFOS, and water systems must start telling customers their PFAS levels in 2027. On May 18, 2026, EPA proposed keeping the PFOA and PFOS limits while letting water systems ask for two more years, to 2031. A second proposal would drop the limits for PFHxS, PFNA, GenX and the mixture rule. Both are proposals, not final rules.

Best under-sink water filter for lead and PFAS

A direct-connect under-sink filter treats the cold water going to your normal kitchen faucet, so there's no extra faucet and no countertop hole. It holds far more water per cartridge than a pitcher or faucet mount.

Reverse osmosis: the premium option

“Reverse osmosis is a process that forces water through an extremely thin barrier that separates chemicals from the water,” in EPA's words. Under the sink it means a dedicated faucet, a storage tank and a drain line. Our whole-house guide explains why whole-house RO is rarely worth it; at a single sink it's common.

Need reverse osmosis certified for PFOA/PFOS as well? IAPMO lists GE's GXRV40TBN for both lead and PFOA/PFOS. It isn't a pick here because stock was low when we checked.

The four filters compared

All four were sold or shipped by Amazon to a US address on October 10, 2026.

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Filter life and replacement cartridges

A certification only lasts as long as the cartridge. EPA's warning: “Using the cartridge after it has expired can make it less effective at removing lead.”

• PUR PLUS faucet: RF-9999, every 100 gallons or 3 months.
• ZeroWater pitcher: ZR-017, rated at 15 gallons; swap it when the meter reads 006.
• A. O. Smith under-sink: AO-MF-ADV-R, every 6 months or 784 gallons.
• iSpring RO: the F4AK set covers the three pre-filters and the mineral filter every 6 months; the post-carbon filter is yearly and the membrane every 2 to 3 years.

Questions people ask

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