NSF filter finder

Tick the contaminants you want covered. The tool lists models whose NSF public listing (checked 2026-10-17) includes a reduction claim for every ticked contaminant. A missing model means "not on NSF's listing for that claim", not that it was tested and failed. Not health advice.

Also show models that match some (not all)

Yearly cost = manufacturer list price ÷ NSF-rated gallons × 365 or 730 gallons (1 or 2 gal/day), carbon-block models only. Time-based replacement intervals can make real cost higher. RO costs aren't estimated because stages have different intervals; see filter cost.