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FilterScored

Water · Best-of

Best Faucet-Mount Water Filter

The best faucet-mount filter pairs a verifiable lead certification with a reasonable cost per gallon and tool-free install.

Faucet-mount filters install in minutes with no plumbing, filter only the water you draw (which stretches cartridge life), and are a renter-friendly middle ground between a pitcher and an under-sink system. We rank them by what they are certified to remove and what they cost to run.

How we score: We rank faucet-mount-class filters by composite score (certified reduction, cost per gallon, capacity and flow).

  1. 16.0
    Brita Faucet Mount (Elite)

    The Brita Faucet Mount (Elite) is a faucet water filter. It is third-party certified (WQA) to reduce lead, chlorine taste and odor. It is also marketed for benzene, asbestos, microplastics, for which we found no accredited third-party certification (so we award no certification credit; this is not a finding that it fails to reduce them). Running cost works out to about $0.180 per gallon.

    • Certified to reduce: lead, chlorine taste and odor
    • Cartridge life: 100 gallons
    • Cost per gallon: $0.180
  2. 25.4
    PUR Plus Faucet Mount (PFM400H)

    The PUR Plus Faucet Mount (PFM400H) is a faucet water filter. It is third-party certified (NSF) to reduce lead, chlorine taste and odor, mercury. It is also marketed for microplastics, benzene, asbestos, pesticides, for which we found no accredited third-party certification (so we award no certification credit; this is not a finding that it fails to reduce them). Running cost works out to about $0.250 per gallon.

    • Certified to reduce: lead, chlorine taste and odor, mercury
    • Cartridge life: 100 gallons
    • Cost per gallon: $0.250

FAQ

Do faucet filters fit every tap?
No. They fit standard threaded faucets but not pull-out, spray, or some designer faucets. Check your faucet type before buying.
Are faucet filters cheaper to run than pitchers?
Often yes, because you filter only what you draw rather than refilling a reservoir, so the cartridge lasts longer per gallon. We compute cost per gallon on each scorecard.