Top rated countertop water filtration systems · ranked by score17 September 2026
The WaterChef C6500 ranks first of 23 countertop water filters we have scored, at 7.6 out of 10. The five on this list cost $120 to $478, and their scores are within 1.09 of each other. Across all 23, scores run from 4.8 to 7.6.
The top 5 at a glance
Every product we scored, placed by overall score. The 5 on this list are in color.
In order of overall score. Under each: where it wins and loses on the three criteria that separate these 5, and why it sits where it does.
On the deciding criteria
Why it sits here
On the deciding criteria
Why it sits here
On the deciding criteria
Why it sits here
On the deciding criteria
Why it sits here
On the deciding criteria
Why it sits here
Just outside the five: the Big Berkey, 6th at 6.4, 0.05 behind.
Certification Coverage, Warranty & Support and Value.
| Overall | Product | Certification Coverage2–10 | Warranty & Support1–10 | Value2–9 | 3-criteria rank |
|---|---|---|---|---|---|
| 1 |  WaterChefC6500 |
10 | 10 | 9 | 1 |
| 2 |  WaterChefC7500 |
10 | 10 | 7 | 2 |
| 3 |  BerkeyCrown Berkey |
2 | 10 | 5 | T-4 ▼1 |
| 4 |  BerkeyImperial Berkey |
2 | 10 | 5 | T-4 |
| 5 |  AquasanaClean Water Machine |
10 | 1 | 2 | 3 ▲2 |
Ranked on these three alone, the order changes most for the Aquasana Clean Water Machine (5th overall, 3rd on those three criteria) and the Crown Berkey (3rd overall, tied for 4th on those three criteria).
3-criteria score: the weighted average of these three alone, and where it places each of the 5.
What holds across the list rather than for one product.
The same scores, cut by price. Rank is against all 23.
First edition - nothing to compare yet. From the next edition this section lists every move, with its cause:
On our scores, the WaterChef C6500: 7.6 overall, first of 23 we scored on 17 September 2026. The WaterChef C7500 is 0.15 behind at $140.
On our scores: the WaterChef C6500 (7.6), the WaterChef C7500 (7.4) and the Crown Berkey (6.6). We score 23 countertop water filters in all, and the rest of the order is on this page.
On our scores, yes: 7.6 overall against 7.4. The WaterChef C6500 is ahead on value (9 against 7). They cost $120 and $140.
The Crystal Quest Water Pitcher at $40, 11th of 23 overall. Next are the Crystal Quest SMART Countertop ($87, 12th) and the Waterdrop Chubby Pitcher ($27, 13th).
The 23 countertop water filters we score list at $27 to $478 at the maker's own store, and half cost $120 or less. The five on this list run $120 to $478.
The WaterChef C6500, the WaterChef C7500 and the Aquasana Clean Water Machine score 10 on certification coverage, the highest of the five.
Four carry a lifetime warranty: the WaterChef C6500, the WaterChef C7500, the Crown Berkey and the Imperial Berkey.
The Crown Berkey scores 8 on flow rate, the highest of the five. It is 3rd overall at $478.
Two score 7 on filter life, the highest of the five: the Crown Berkey (3rd overall) and the Imperial Berkey (4th overall).
Two score 9 on build quality, the highest of the five: the Crown Berkey (3rd overall) and the Imperial Berkey (4th overall).
The Aquasana Clean Water Machine scores 10 on ease of installation, the highest of the five. It is 5th overall at $400.
The WaterChef C6500 scores 9 on value, the highest of the five. It is 1st overall at $120.
The WaterChef C6500 at $120 (1st of 23 overall). The most expensive is the Crown Berkey at $478.
The WaterChef C6500 and the WaterChef C7500, at 7.0 out of 10 on what owners and independent testers report, the highest of the five. Overall they are 1st and 2nd.
Of the five on this list, WaterChef and Berkey have two each and Aquasana has one. The top pick is from WaterChef.
23, from 6 brands. We list 23 and rank every one.
By the overall score: half our specification score across eight criteria, half what owners and independent testers report across up to five sources. The same number sits on every product page.
This edition is dated 17 September 2026. The list is rebuilt whenever our product data changes, and a new edition goes up once it has been checked. Anything that moved since the last edition is listed on this page with the reason.
Head-to-heads between brands and products on this list.
Scores calculated 17 September 2026 · 23 products ranked; a product needs at least two independent sources to be ranked · How we score · All rankings
