Big Stone County, MN
drinking water quality
5,067 residents · 17 public water systems · 7 ZIP codes
EPA sampled 1 of 17 public water systems here, together serving about 2,021 people. Last sampled 7/9/2024.
What this means
PFAS are industrial chemicals that EPA describes as breaking down only very slowly in the environment. In April 2024 EPA set the first enforceable national limits: 4 ng/L for PFOA and PFOS, 10 ng/L for PFHxS, PFNA and GenX.
These figures are county-level and come from EPA’s sampling of public water systems. They describe the worst result found in the county, not what comes out of any particular tap — that depends on which system serves the address, and on the plumbing in the building. A private well is not covered by this programme at all.
ZIP codes in Big Stone County
56210 · 56211 · 56225 · 56227 · 56240 · 56276 · 56278
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.