Water filter brands

Compare brands by system type, evidence and long-term ownership.

Browse brands by the products they make best, documented performance, replacement cost, maintenance requirements and the households they fit.

Brand guides

Browse by system type and best fit

Tankless RO, under-sink filtration and replacement filters.

Premium RO, softeners, whole-house and well-water treatment.

Refrigerator filters, compatible cartridges, RO and whole-house replacement parts.

Compatible refrigerator filters and RFID-enabled replacement options.

Evidence-first shower filtration with chlorine and PFAS testing.

Design-focused filtered showerhead with replaceable cartridges.

Countertop reverse osmosis with hot/cold dispensing.

Whole-home filtration and water-softening systems.