Local water quality
Water quality in Mason City, Iowa
3 public water systems · EPA data
The bottom line
EPA records for the water serving Mason City, Iowa show Lead, Nitrate, Nitrite. A filter independently certified to reduce those exact contaminants is the most direct fix.
What's in Mason City's water
Contaminants EPA has recorded across Mason City's water systems, and how many certified filters remove each.
Water systems serving Mason City
Open a system for its full report — measured levels vs. federal limits, PFAS, and the certified filters that remove each contaminant.
Filter your Mason City water
Match a certified filter to what's actually in your water — a filter certified for lead may do nothing for PFAS or fluoride.