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.
On September 30, 2026 the D.C. Circuit heard arguments in AWWA v. EPA (No. 24-1376), a challenge to the 2024 Lead and Copper Rule Improvements; the rule stays in effect, with its main compliance date on November 1, 2027.
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.
The D.C. Circuit heard arguments on September 18, 2026 in the utilities' challenge to EPA's 2024 PFAS drinking water rule; EPA's May 2026 proposals to change the rule are not final, so the 4 ppt PFOA and PFOS limits and the 2029 deadline still stand.
On August 3, 2026 EPA released the protocol for its fluoride human health toxicity assessment, the next step in an accelerated review that could lead to a revised drinking water standard; the current limit, 4.0 mg/L, is unchanged.
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.
