Filtration Systems: the numbers
Everything below is computed from the 65 curated filtration systems we track - no estimates, no third-party data.
65Curated models
16Brands
★ 4.4Average Amazon rating
44,749Amazon ratings
How Amazon buyers rate them
The average Amazon rating across the category is ★ 4.4. Low-rated products with meaningful rating volume are dropped during curation, so the spread below reflects the survivors.
Brand share of the curated catalog
Most-rated models
| Ratings | ||
|---|---|---|
| Waterdrop WD-10UA-UF Filtration System | ★ 4.6 | 4,900 |
| Apec Water ROES-PH75 Filtration System | ★ 4.6 | 4,000 |
| Waterdrop WD-TSU Filtration System | ★ 4.5 | 3,347 |
| Aquasana AQ-5300+.55 Filtration System | ★ 3.9 | 3,200 |
| Waterdrop WD-17UA-UF Filtration System | ★ 4.5 | 2,800 |
Where these numbers come from
Counts, ratings, and rating totals are pulled from the curated filtration systems catalog on every build - the same data behind the Filtration Systems category page. Junk listings and no-name brands are filtered out before anything is counted. Product data: last refreshed aug 4, 2026.