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FilterScored

Water · Best-of

Best Faucet-Mount Water Filter

Bottom line

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

If you want something between a pitcher and an under-sink system - and you'd rather not touch the plumbing - a faucet-mount filter fits. It screws onto the tap in minutes, filters only the water you actually draw (which makes the cartridge last longer), and comes off cleanly when you move, so it suits renters. We rank them by what they're certified to remove and what they cost to run.

How we score: We rank faucet-mount filters by overall score, which weighs certified reduction, cost per gallon, and how much water the cartridge handles before it needs changing.

  1. 17.0
    Brita Faucet Mount (FF-100)

    The Brita Faucet Mount (FF-100) is a faucet water filter. It is third-party certified (WQA) to reduce lead, chlorine taste and odor, asbestos, benzene, VOCs, microplastics. Running cost works out to about $0.180 per gallon.

    • Certified to reduce: lead, chlorine taste and odor, asbestos, benzene, VOCs, microplastics
    • Cartridge life: 100 gallons
    • Cost per gallon: $0.180
  2. 26.4
    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, asbestos, benzene, microplastics, pesticides. Running cost works out to about $0.250 per gallon.

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

FAQ

Do faucet filters fit every tap?
No, so check before you buy. They thread onto standard faucets but won't fit pull-out, spray, or many designer faucets. A quick look at your tap saves you a return.
Are faucet filters cheaper to run than pitchers?
Often yes. Because you filter only the water you draw instead of refilling a reservoir, the cartridge stretches further per gallon - which usually means a lower running cost. We compute cost per gallon on each scorecard so you can confirm it for the model you're eyeing.

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