Does ZeroWater remove PFAS?
Last reviewed July 2026.
Yes — ZeroWater holds a certified PFAS claim. Not marketing copy: an accredited certifier lists it, and the source and the exact claim are below.
Model by model
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| Model | Standards | PFOA/PFOS | Claim certified by | $ / certified gal |
|---|---|---|---|---|
| 5-Stage Replacement Filter (2-pack) ZR-002 buy ↗ | 42 53 | ✓ | IAPMO R&T, NSF/ANSI 53 | $1.233 |
ZR-002: PFOA/PFOS is one of the NSF/ANSI 53 claims ZeroWater's data sheet says IAPMO R&T certifies. It is a 53 claim, not a 401 one. Source: ZeroWater performance data sheet (dated 2026-04-22), read 2026-10-02.
ZR-002: System certified by IAPMO R&T to NSF/ANSI 42 (chlorine) and 53 (lead, hexavalent chromium, PFOA/PFOS, mercury). Not in the NSF listing database — IAPMO is a separate accredited certifier.
What the certified claim costs to run
Certification is per model, and so is the running cost. The cheapest ZeroWater model carrying the claim is the 5-Stage Replacement Filter (2-pack) (ZR-002) at about $18.50 per filter for a certified 15 gallons — $1.233 per certified gallon.
That capacity is what the certifier tested to, not a marketing estimate. For one person drinking about half a gallon a day it is roughly about 4 weeks per filter; for a family of four, closer to 8 days. Run past the rated capacity and the claim no longer applies — the media is exhausted even though the filter still passes water.
How to check this yourself
Nothing here needs to be taken on trust. ZeroWater's certifications are held by IAPMO R&T, and each keeps a public database you can search by brand or model number. Look up the model printed on the filter — not the box, not the retail listing — and read which standards the entry lists. A model certified to 42 only will say exactly that.
Direct listings: ZR-002
If a figure on this page disagrees with the certifier's listing, the listing wins. Tell us and we will correct it.
What "removes PFAS" actually covers
The certified claim is PFOA/PFOS reduction — the two legacy compounds the standards test for — or, on newer NSF/ANSI 53 listings, a total PFAS claim tested on a set mixture of seven compounds that includes PFOA and PFOS. Neither is "all PFAS", a family of thousands of chemicals. A certified filter is still the strongest verifiable option a pitcher or fridge filter can offer; just read the claim as written. Standards background: 42 vs 53 vs 401.
Related: Is ZeroWater NSF certified? · Does ZeroWater remove lead?
We do not test filters — we index what accredited certifiers publish, with attribution, and make no health or treatment claims. A certification covers a specific model against a specific standard; it is not a general seal of quality. We are not affiliated with NSF International.
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