Certification lookup

Does your water filter actually remove it?

“Reduces contaminants” on the box doesn’t mean a filter is certified to remove any particular one. We check the real NSF, WQA, and IAPMO certified-product listings — model by model — so you can see what each brand is genuinely certified to remove. A ✓ means at least one of the brand’s models is certified for it.

Brand	lead	fluoride	PFAS	chlorine	arsenic	mercury	chromium-6	copper	nitrate	TDS (total dissolved solids)
PUR	✓	✕	✕	✓	✕	✓	–	✓	–	–
Brita	✓	✓	–	✓	✓	–	✓	✓	✓	✓
ZeroWater	✓	–	✓	–	✓	✓	–	–	–	–
Aquasana	–	–	–	–	–	–	–	–	–	✓
Waterdrop	✓	✕	✕	✓	✕	✓	–	–	–	✓
APEC	✓	✓	✕	✓	✓	✓	✓	✓	–	✓
iSpring	✓	✓	✕	✓	✓	–	✓	✓	✓	✓
Culligan	–	–	–	–	–	–	–	–	–	✓
Doulton	✓	✕	✕	✓	✕	–	–	–	–	–
Multipure	✓	✕	✓	✓	✓	✓	–	–	–	–
eSpring	✓	✕	✓	✓	✕	✓	–	–	–	–
Pentair	✓	✓	✕	✓	✓	✓	✓	✓	✓	✓
3M	✓	✓	✕	✓	✓	–	✓	✓	–	✓
Express Water	✕	✕	✕	✕	✕	–	–	–	–	✓
A.O. Smith	✓	✓	–	–	✓	–	✓	✓	✓	✓
Bluevua	✕	✕	✕	✕	✕	–	–	–	–	✓
Samsung	✓	✕	✓	✓	✓	✓	✓	–	–	–
LG	✓	✕	✓	✓	✕	✓	✓	–	–	–
Whirlpool	✓	✕	✓	✓	✕	✓	–	–	–	–
Frigidaire	✓	✕	✕	✓	✕	✓	–	–	–	–
GE	✓	✓	✕	✓	✓	–	✓	✓	✓	✓
everydrop	✕	✕	✕	✓	✕	–	–	–	–	–
Bosch	✓	✕	✕	✓	✕	✓	–	–	–	–
Aqua-Pure	✓	✕	✕	✓	✕	–	–	–	–	✓

✓ certified · ✕ not in the certified listings · – not assessed (we only mark ✕ where our model-level coverage of that brand is strong enough to say so).

Don’t see your brand? Find every filter certified for the contaminant you care about.

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