Does Waterdrop remove arsenic?
Based on the itemized NSF, WQA & IAPMO certified-model listings we track for Waterdrop (29 of 30 models).
What this means
Waterdrop’s certified filters do cover lead, chlorine, mercury, TDS (total dissolved solids) — but not arsenic. A brand can advertise that a filter “reduces” arsenic or is “tested to” a standard without the specific model being independently certified and listed — and that distinction is exactly what this site tracks.
You need reverse osmosis, or a filter certified for arsenic. See every filter independently certified for it →
Filters certified to remove arsenic →About arsenic
Known human carcinogen (skin, bladder, lung); also cardiovascular and developmental effects. Mostly naturally occurring in groundwater.
What Waterdrop filters are certified to remove
Across the Waterdrop models we track, here’s what their certifications actually cover.
How we know: we normalize the public certified-product listings from NSF, WQA, and IAPMO. A “yes” means a specific Waterdrop model is listed as certified for arsenic. See our methodology.