By contaminant
What removes it?
Certified reductions for 18 contaminants across the 96 water filters we track: 29 for PFAS, 39 for Lead, 53 for Chlorine, 19 for Chloramine, and more. Each count comes from certifier listings (NSF, WQA, IAPMO, CSA), not brand claims.
| Contaminant | Certified filters | Brand tests only | Lowest-priced certified |
|---|---|---|---|
| PFAS | 29 | 29 | ZeroWater 10-cup pitcher ($38) |
| Lead | 39 | 25 | Brita Elite faucet filter ($32) |
| Chlorine | 53 | 34 | Brita Denali 6-cup pitcher (Original filter) ($23) |
| Chloramine | 19 | 14 | A. O. Smith AO-US-200 2-Stage Under Sink ($140) |
| Fluoride | 7 | 24 | AquaTru Carafe ($375) |
| Arsenic | 8 | 21 | AquaTru Carafe ($375) |
| Nitrate | 3 | 10 | AquaTru Carafe ($375) |
| Chromium 6 | 7 | 8 | ZeroWater 10-cup pitcher ($38) |
| Mercury | 31 | 12 | Brita Denali 6-cup pitcher (Original filter) ($23) |
| Microplastics | 28 | 6 | Brita Elite faucet filter ($32) |
| Cysts | 21 | 5 | LifeStraw Home 7-cup pitcher ($65) |
| VOCs | 22 | 16 | Brita Elite faucet filter ($32) |
| TDS | 17 | 11 | Express Water RO5DX ($190) |
| Bacteria and viruses | 2 | 10 | Multipure Aquapremier ($965) |
| Iron | 0 | 2 | — |
| Copper | 13 | 11 | Brita Denali 6-cup pitcher (Original filter) ($23) |
| Uranium | 0 | 1 | — |
| 1,4-dioxane | 0 | 0 | — |