Best gravity water filters
Gravity filters ask nothing of your home - no power, no pressure, no plumber - and ask patience of you instead: about a gallon an hour. The category also has the muddiest claims in filtration, which is why we lead with paperwork.
BOROUX Legacy 3-Gallon - Certified gravity filtration - no power, no plumbing
The gravity filter for people who read fine print: it publishes exactly what it is certified for and labels the rest as lab-verified. In a category famous for fuzzy claims, that honesty - plus the hardware warranty - earns it the top gravity spot.
$399 (2-filter configuration at boroux.com; 1.8-gallon Legacy Compact is $349) · Filters: $149/yr at a 2-filter pace (pair $149 sale / $166 list) · Full breakdown →
Big Berkey - The famous name - with caveats you should know
The most searched-for gravity filter in America, and the most complicated recommendation we publish. The lab data is extensive; the certification is absent, and an EPA stop-sale order has hung over parts of the line since 2023. Informed buyers can still choose it - but choose it informed.
$367 (From $367 with 2 Black Berkey elements at the authorized dealer BigBerkeyWaterFilters.com) · Filters: Phoenix pair $120 per 5,500 gallons; PF-2 fluoride pair $103 per 1,000 gallons · Full breakdown →
What happened to ProOne?
ProOne's Big+ gravity system - one of the few gravity units with genuine NSF/ANSI 53 certification for lead and PFAS - is marked discontinued, all sales final on ProOne's own site as of this check, with dealers reporting the line transitioning to Culligan's MaxClear brand. If you own one, stock a spare G3.0 element while they last, and see our replacement hub.
Head-to-head: Boroux vs Berkey, claim by claim →