4.6
Best Water Filters by Type
Our ranked picks for each kind of filter, from pitchers to whole-house systems. Every pick is checked against the certifier's listing.
10 buying guides
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4.6
The score is the top pick's overall score. How we score
GE Refrigerator Water Filter (2026): Which One Fits Yours
Which GE filter fits your fridge, and what the XWFE, RPWFE, MWF, MSWF, and GSWF are certified to reduce.
Best Water Filter for PFAS (2026): 8 Certified Picks
Eight filters certified for PFAS, from pitchers to whole-house systems, with the difference between PFOA/PFOS and Total PFAS claims explained.
Best Gravity Water Filters (2026): Certified Picks, Ranked
Which gravity filters are certified for lead, PFAS and microplastics, who certifies them, and what each costs per gallon. Berkey’s certification depends on the elements you buy.
Best Countertop Water Filters (2026): No Plumbing Needed
Five plug-in filters that sit on the counter, each certified for lead. Reverse osmosis models also cut fluoride, and carbon models keep minerals and waste no water.
Best Whole House Water Filter (2026): Picks by Water Type
Five whole-house systems for city water, wells and hard water. Only one is certified for any reduction, and we tell you which.
Best Reverse Osmosis Systems (2026): 7 Certified Picks
Seven reverse osmosis systems, each certified for lead and fluoride, from no-plumbing countertop units to tankless and dealer-installed under-sink systems.
Best Water Filter Pitcher (2026): Ranked by Certification
A filter pitcher is the cheapest, simplest way to improve your water, but a $25 jug and a $99 jug are not doing the same job. We scored every pitcher we’ve reviewed so you can match the right one to your water.
Best Under-Sink Water Filters (2026): 8 Certified Picks
Eight under-sink filters, from no-waste carbon filters that keep minerals to reverse osmosis systems that also reduce fluoride, plus two that use your own faucet.
Best Refrigerator Water Filter (2026): Picks by Fridge Brand
Match your fridge brand to a filter certified for lead, and see which ones are also certified for PFOA/PFOS or microplastics.
Best Water Filter for Home (2026): Certified Drinking Water Filters
Our top drinking water filters of every type, ranked on what NSF International, IAPMO R&T and WQA actually certify, plus what each costs to run.