What substances does the ZeroWater filter remove?Updated 3 months ago

What we remove

ZeroWater's 5-stage ion-exchange filter is independently certified by IAPMO to reduce PFOA, PFOS, lead, chromium, mercury and chlorine — and lab testing shows it also significantly reduces a wide range of other contaminants, including antimony, arsenic, barium, cadmium, copper, iron, manganese, selenium, silver, thallium, zinc, cyanide, fluoride, asbestos, nitrate and nitrite.

How it compares

In independent lab tests (following NSF/ANSI standards), ZeroWater consistently outperformed a leading two-stage filter — for example, reducing chromium 6 by 99% versus around 30% for the competitor, and lead by 99% versus roughly 80–86%.

Full performance data

For the complete breakdown of test results and certifications, visit our Performance Results page.