Does A.O. Smith remove copper?

Yes

1 A.O. Smith model we track is independently certified to remove copper — 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 copper

Short-term: nausea/vomiting/cramps; long-term: liver/kidney damage. Leaches from copper plumbing, worse with corrosive water.

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 copper — all brands, ranked.

Certified for copper →

Other brands & copper

PUR Yes Brita Yes APEC Yes iSpring Yes Pentair Yes 3M Yes 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 copper. See our methodology.