Does A.O. Smith remove arsenic?

Yes

1 A.O. Smith model we track is independently certified to remove arsenic — a reverse-osmosis filter.

Based on the itemized NSF, WQA & IAPMO certified-model listings we track for A.O. Smith (2 of 7 models) — coverage for this brand is partial, so we only state what is confirmed certified, not what isn’t.

Which A.O. Smith models are certified

Certification is per model — make sure the product you buy is one of these specific certified models, not just the same brand.

Certified model	Type
A.O. Smith AORO-50	reverse-osmosis	Buy on Amazon →

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About arsenic

Known human carcinogen (skin, bladder, lung); also cardiovascular and developmental effects. Mostly naturally occurring in groundwater.

What A.O. Smith filters are certified to remove

Across the A.O. Smith models we track, here’s what their certifications actually cover.

✓ lead ✓ fluoride ✓ arsenic ✓ chromium-6 ✓ copper ✓ nitrate ✓ TDS (total dissolved solids)

See every filter certified for arsenic — all brands, ranked.

Certified for arsenic →

Other brands & arsenic

PUR No Brita Yes ZeroWater Yes Waterdrop No APEC Yes iSpring Yes Doulton No Multipure Yes eSpring No Pentair Yes 3M Yes Express Water No Bluevua No Samsung Yes LG No Whirlpool No Frigidaire No GE Yes

How we know: we normalize the public certified-product listings from NSF, WQA, and IAPMO. A “yes” means a specific A.O. Smith model is listed as certified for arsenic. See our methodology.