Water Filter Buying Guide

Trusted household appliance manufacturer offering NSF-certified refrigerator and under-sink water filters with proven lead and contaminant removal.

Specialized reverse osmosis manufacturer delivering high-performance RO systems with exceptional value and comprehensive NSF certifications.

Leading water treatment company with professional-grade Everpure filters and reverse osmosis systems for residential and commercial use.

Manufacturer of compact, high-quality under-sink replacement filters with NSF certifications for lead and health-effect contaminants.

Formerly 3M, Solventum provides premium under-sink and reverse osmosis water filtration systems with advanced multi-stage filtration technology.

America's most-recognized pitcher brand (29,000/mo Ahrefs volume on 'brita filter').

PUR is the mass-market Brita-tier mainstream consumer water-filter brand owned by Helen of Troy Limited (NASDAQ: HELE, El Paso TX) since the December 2018 $2…

Doulton is the UK ceramic-element water filtration specialist with English heritage tracing to Royal Doulton's 1827 founding by John Doulton in Lambeth London.

Express Water is the privately-held Diamond Bar California-based (Los Angeles metropolitan area) DTC + Amazon-first consumer reverse-osmosis + whole-house wa…

Multipure is the privately-held Las Vegas Nevada-based premium under-sink solid-carbon-block water-filtration brand founded 1970 by Alvin Rice — one of the o…

APEC Water Systems, Inc.

Waterdrop is the high-volume consumer-facing brand operated by Ecolife Technologies, Inc.

Bluevua is the newer (~2018-2020 launch wave) DTC + Amazon-first consumer water-filtration brand operating exclusively in the countertop reverse-osmosis form…

AquaTru is the countertop reverse-osmosis brand built around a patented 4-Stage Ultra Reverse Osmosis® system that requires no plumbing install.

Culligan is the canonical century-old US water-softener + whole-house + RO + drinking-water consumer brand, founded by Emmett Culligan in 1936 in Northbrook,…

Brondell Inc.

Frizzlife is the DTC + Amazon-first consumer water-filtration brand spanning tankless under-sink reverse-osmosis (PD600 at 600 GPD with integrated TDS meter,…

ZeroWater is a US pour-through pitcher and dispenser brand built around a 5-stage ion-exchange filter cartridge with a bundled 'Ready-Read' TDS meter in ever…

Aquasana is a premium direct-to-consumer water-treatment brand founded around 1994 and acquired by A.

LifeStraw is the canonical emergency / outdoor / humanitarian microbial-filter brand (introduced 2005 by Vestergaard Frandsen, Lausanne, Switzerland; manufac…

Clearly Filtered is a US premium consumer-water-filter brand founded in 2011, headquartered at 23121 Antonio Parkway Suite 130 Rancho Santa Margarita CA 9268…

AquaBliss is a US shower-only filtration brand owned by Adnomix, Inc.

Aquaboon (operated by Aquaboon Inc., a privately-held US importer / distributor historically documented in the New York / New Jersey metropolitan area per Am…

Berkey is a high-profile US gravity-fed water filter brand designed, marketed, and distributed by New Millennium Concepts, Ltd.

Crystal Quest is the privately-held Brooklyn NY-based broad-line consumer water filtration brand founded approximately 1985 by Helen Lewicki.

Epic Water Filters is the Boulder Colorado-based pitcher + undersink + bottle brand operated by Epic Water Filters, Inc., founded in 2014 by Larkin Brown (CE…

Hydroviv is the Washington D.C.

Pelican Water is the whole-house water-treatment consumer brand owned by Pentair plc (NYSE: PNR) since the August 1, 2018 $107 million cash acquisition of Pe…

Propur (operating propurusa.com; corporate entity Pro Pür Water Technologies / Propur Inc.; historically documented as Anchorage Alaska-based per third-party…

SpringWell Water Filter Systems LLC is the privately-held Sarasota Florida-based DTC + Amazon-first consumer whole-house water-treatment brand founded approx…