A 2.25 gallon tank is the size most people mean by Berkey-type: enough for one to four people, and it fits under most cabinets. This group is the most competitive, with prices from $120 to $367. Compare certifications and element costs, because the tanks hold the same amount of water.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Full ranking 17
- Purewell 3-Stage PW-OB#1 of 17Full review
A low-priced, certified-filter 2.25 gal system for chlorine, taste and sediment. Fluoride needs a different model.
Amazon $145.99$145.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Waterdrop TK-A#2 of 17Full review
A well-priced 2.25 gal system with certified carbon filters. The easy pick if you want Berkey-size capacity for less.
Amazon $159.99$159.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Culligan MaxClear Scout 1 Filter#3 of 17Full review
The entry Culligan MaxClear with a certified filter for people who want a name-brand 2.25 gal system at a low price.
Amazon $155$1552.2 galNSF/ANSI 42- - Waterdrop TK15-A#4 of 17Full review
A small, low-priced certified gravity filter for one to three people, a trip or an RV.
Amazon $119.99$119.991.5 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Waterdrop TK-FS#5 of 17Full review
The Waterdrop with fluoride filters in the box. Costs $80 more than the TK-A, which can take fluoride filters as an add-on.
Amazon $239.99$239.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Waterdrop TK-AB-FS#6 of 17Full review
A cheaper way to get fluoride filters in the box than the TK-FS, with silver in the carbon filters.
Amazon $199.99$199.992.2 galNSF/ANSI 42, NSF/ANSI 3723,000 gal each - Purewell SF-2.25G PFAS-Free 6-Stage#7 of 17Full review
The Purewell to pick when PFAS and lead are the concern. It uses a different filter than the other Purewells.
Amazon $168.99$168.992.2 galNSF/ANSI 423,000 gal each - Culligan MaxClear Scout 2 Filters#8 of 17Full review
The Scout with its full set of two filters. Buy this one if you will fill the tank daily.
Amazon $199$1992.2 galNSF/ANSI 42- - Purewell 2.25G 3-Stage Window#9 of 17Full review
The 3-stage Purewell with a water-level window. It costs a little more than the certified PW-OB.
Amazon $158.99$158.992.2 galNone stated3,000 gal each - Waterdrop TK-AE#10 of 17Full review
For people who want faster flow than a two-filter 2.25 gal system and can do without a certification claim.
Amazon $189.99$189.992.2 galNone stated3,000 gal each - Purewell 2.25G 8-Stage Fluoride#11 of 17Full review
For homes with fluoridated water they would rather not drink. Plan on replacing the fluoride filters much sooner than the carbon ones.
Amazon $229$2292.2 galNone stated3,000 gal each - Purewell 9-Stage Fluoride BO-FL#12 of 17Full review
A fluoride-focused Purewell with one filter type to stock. Running costs are higher than for the carbon-only models.
Amazon $209$2092.2 galNone stated1,000 gal each - Boroux Compact 1.8 Gal#13 of 17Full review
A small stainless gravity filter for one or two people with long-life filters. It costs more per gallon of tank than larger rivals.
Amazon $349$3491.8 galNSF/ANSI/CAN 3726,000 gal each - Big Berkey#14 of 17Full review
The best known countertop gravity filter, sized for a small family. Priced well above lookalikes with the same capacity.
Amazon $367$3672.2 galTested only3,000 gal each - Glacier Fresh PC04#15 of 17Full review
A newer 2.25 gal system with a different filter technology. Short filter life makes it expensive to run.
Amazon $169.99$169.992.2 galTested only200 gal each - Doulton W9361139#16 of 17Full review
A traditional ceramic-candle gravity filter for buyers who prefer the British Berkefeld approach. The listing gives little hard data to compare it.
Amazon $305$3052.2 galNone stated- - Travel Berkey#17 of 17Full review
A compact Berkey for one to three people, a dorm, an office or a trip. You pay a lot per gallon of storage for the small size.
Amazon $327$3271.5 galTested only3,000 gal each