Does Waterdrop remove PFAS?

Last reviewed July 2026.

Some models — and the split is easy to miss. A certified PFOA/PFOS claim usually lives in NSF/ANSI 401 (emerging contaminants), and Waterdrop carries it only on some models. The ones without it are still genuinely certified — just not for PFAS.

Model by model

WDS-F27: NSF-listed under Qingdao Ecopure Filter Co. to NSF/ANSI 53 (health effects, incl. lead) at a rated capacity of 300 gallons, plus 42. Aftermarket, and genuinely certified — Waterdrop holds hundreds of NSF listings. Retail listings also cite NSF/ANSI 372, which is a lead-free MATERIALS standard (the plastic doesn't leach lead) and is NOT a filtration claim — we exclude it from the standards column.

WDP-F27: The 'Plus' (WDP) line adds NSF/ANSI 401 — PFAS and pharmaceuticals — on top of 42 and 53. NSF-listed at 300 gallons, same as the standard WDS line. Same brand, same fridge, one extra standard: the Plus/Standard split is Waterdrop's version of Brita's Elite/Standard split, and it is easy to buy the wrong one.

WDP-UKF8001: NSF-listed under Qingdao Ecopure Filter Co. as EFF-6007S / WDP-UKF8001, rated 300 gallons, with NSF/ANSI 53 reduction claims for lead, cyst, benzene, mercury, carbofuran and endrin — plus 42 and 401 (PFOA/PFOS). Replaces Whirlpool everydrop Filter 4 / Maytag UKF8001.

WD-F38: Sold as 'NSF 42 and 372 certified' — which sounds comprehensive and is not. NSF/ANSI 42 is chlorine, taste and odour; NSF/ANSI 372 only certifies that the housing MATERIAL is lead-free, and is not a filtration claim at all. There is no NSF/ANSI 53 listing, so this filter carries NO certified lead claim — while the everydrop EDR1RXD1 it replaces holds 42, 53 AND 401. Swapping to it to save money silently gives up your lead certification.

What "removes PFAS" actually covers

The certified claim is PFOA/PFOS reduction — the two legacy compounds the standards test for — not "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 Waterdrop NSF certified? · Does Waterdrop 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.