Best NSF/ANSI Certified Gravity Water Filters Ranked

A low-priced, certified-filter 2.25 gal system for chlorine, taste and sediment. Fluoride needs a different model.

A well-priced 2.25 gal system with certified carbon filters. The easy pick if you want Berkey-size capacity for less.

The entry Culligan MaxClear with a certified filter for people who want a name-brand 2.25 gal system at a low price.

A small, low-priced certified gravity filter for one to three people, a trip or an RV.

The Waterdrop with fluoride filters in the box. Costs $80 more than the TK-A, which can take fluoride filters as an add-on.

A cheaper way to get fluoride filters in the box than the TK-FS, with silver in the carbon filters.

The Purewell to pick when PFAS and lead are the concern. It uses a different filter than the other Purewells.

The Scout with its full set of two filters. Buy this one if you will fill the tank daily.

A small stainless gravity filter for one or two people with long-life filters. It costs more per gallon of tank than larger rivals.

A 3 gal MaxClear that can grow into three filters. A good base if you plan to add filters later.

The fully loaded Venture. It makes sense for a busy kitchen where a one-filter system would hold up the line.

A 3 gal stainless gravity filter that uses ProOne G2.0 filters. A mid-priced option, though the listing publishes little about flow, filter gallons or warranty.

A Royal Berkey sized 3 gal stainless filter with long-life carbon filters. A fair price, but the filters lack an NSF reduction certification.