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