Updates
9 dated updates on water filters: certification changes, EPA rules, recalls, launches and findings from our own data. Latest (October 23, 2026): We checked 96 filters: 44% of reduction claims are brand-tested only.
Of 538 contaminant-reduction claims across 96 current home water filters we track, 299 (about 56%) are listed by a certifier (NSF, WQA, IAPMO or CSA) and 239 (44%) rest only on a brand-paid lab test that no certifier lists.
Waterdrop, iSpring, AquaTru, Frizzlife and LifeStraw listed new filters between August 4 and September 27, 2026; as of October 23 we had not confirmed any of them in an NSF, WQA, IAPMO or CSA listing.
Of the 15 current water filter pitchers we track, only the PUR PLUS 11-cup (Total PFAS) and the ZeroWater 10-cup (PFOA and PFOS) have a certified PFAS reduction, both listed by IAPMO R&T under NSF/ANSI 53.
Only 2 of the 17 whole-house filters we track have a certified reduction for a health-related contaminant: the SpringWell Lead & Cyst system (lead, PFAS, cysts) and the Aquasana HealthShield (PFAS, VOCs).
On September 18, 2026 the First Circuit affirmed the denial of Berkey International's request for a preliminary injunction against EPA's 2023 stop-sale order, so the order on Black Berkey filters and systems containing them stays in place.
SharkNinja began selling the Ninja HydraSense countertop filter on August 13, 2026; it is listed by IAPMO R&T under NSF/ANSI 42, 53 and 401, including a 7-PFAS 'Total PFAS' claim, lead and microplastics.
Every update cites its sources and links to the filters it affects. We add notes when a certifier listing, an EPA rule, a recall or a product launch changes something on this site.
