By contaminant
What do you need to remove?
Certification is per-contaminant — a filter certified for lead may do nothing for PFAS or arsenic. Pick what's in your water (or look it up by ZIP) to see only the filters actually certified for it.
Heavy metals
Lead
980 certified filters
116 on Amazon →
Mercury
608 certified filters
48 on Amazon →
Barium
455 certified filters
15 on Amazon →
Copper
355 certified filters
26 on Amazon →
Cadmium
355 certified filters
21 on Amazon →
Chromium
218 certified filters
16 on Amazon →
Arsenic
204 certified filters
9 on Amazon →
Chromium-6
194 certified filters
8 on Amazon →
Zinc
144 certified filters
4 on Amazon →
PFAS ("forever chemicals")
Disinfection byproducts
Nitrate & nutrients
Microbial / cysts