The water filters worth shopping

723 consumer filters from recognizable brands — searchable by the exact contaminants each is certified to remove, sorted by true cost per gallon. We distilled these from 5,682 NSF/WQA/IAPMO certification records, setting aside the commercial, foodservice, dealer-installed, and manufacturer-of-record (OEM) entries a shopper doesn't buy. Toggle all certified below to browse the full registry.