Is Waterdrop NSF certified?

Last reviewed July 2026.

Yes — but only some models. Waterdrop filters appear in the public certified listings (NSF), yet the certification is per model, and the models differ on the one thing most buyers care about: lead. Some Waterdrop filters carry a certified lead claim, made under NSF/ANSI 53. Others don't: certified only for chlorine, taste and odour, or holding 53 for other contaminants but not lead. All of them are honestly "certified". Only some are certified for lead.

What the listing actually says

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 on top of 42 and 53. Its 401 claims are pharmaceuticals, BPA and nonylphenol, not PFOA or PFOS. 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. Its 401 claims are pharmaceuticals, BPA and nonylphenol, with no PFOA or PFOS (NSF listing read 2026-10-02). 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.

The lead claim, model by model

WDS-F27: NSF's NSF/ANSI 53 claim set for the Waterdrop EFF-6027S / WDS-F27 lists lead reduction, with cyst, benzene, carbofuran and endrin. Source: NSF listing, Qingdao Ecopure Filter (Waterdrop), read 2026-10-02.

WDP-F27: NSF's NSF/ANSI 53 claim set for the Waterdrop EFF-6027S / WDP-F27 lists lead reduction, with cyst, benzene, carbofuran and endrin. Source: NSF listing, Qingdao Ecopure Filter (Waterdrop), read 2026-10-02.

WDP-UKF8001: NSF's NSF/ANSI 53 claim set for the Waterdrop EFF-6007S / WDP-UKF8001 lists lead reduction, with cyst, benzene, carbofuran and endrin. Source: NSF listing, Qingdao Ecopure Filter (Waterdrop), read 2026-10-02.

WD-F38: NSF lists the WD-F38 under NSF/ANSI 42 only. With no NSF/ANSI 53 listing it carries no certified lead claim. Source: NSF listing, Qingdao Ecopure Filter (Waterdrop), read 2026-10-02.

What those standard numbers mean

• NSF/ANSI 42 — aesthetic effects (chlorine, taste and odour). Not a health claim.
• NSF/ANSI 53 — health effects. A certified lead or PFOA/PFOS claim is made under 53, but a 53 listing covers only the contaminants its claim set names: it is not automatically a lead claim.
• NSF/ANSI 401 — emerging compounds: pharmaceuticals, BPA, DEET, microplastics. On the listings we read, no 401 claim set includes PFOA or PFOS.

Verify it yourself: every Waterdrop row above links the certifier's own listing. If a number here disagrees with the listing, the listing wins — tell us and we'll fix it.

What the certified claim costs to run

Certification is per model, and so is the running cost. The cheapest Waterdrop model carrying the claim is the WDS-F27 — Samsung DA29-00020B replacement (4-pack) (WDS-F27) at about $9.00 per filter for a certified 300 gallons — $0.030 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 20 months per filter; for a family of four, closer to 5 months. Run past the rated capacity and the claim no longer applies — the media is exhausted even though the filter still passes water.

Within the same brand the spread is real: the Plus WDP-UKF8001 — everydrop Filter 4 / EDR4RXD1 replacement works out at $0.117 per certified gallon, 3.9× the cheapest. Same claim, different money.

See how Waterdrop ranks on cost per certified gallon against every filter we track →

Find your filter by part number

Replacing a Samsung or LG filter? On NSF's listing, Waterdrop's plain WD versions carry NSF/ANSI 42 only, while the WDS and WDP versions add the 53 lead claim; the part-number pages show which Waterdrop model matches each original part.

Related: Does Waterdrop remove lead? · Does Waterdrop remove PFAS?

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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