Polk County, TN
drinking water quality
18,338 residents · 19 public water systems · 10 ZIP codes
EPA sampled 1 of 19 public water systems here, together serving about 1,217 people. Last sampled 7/15/2024.
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 Polk County
37307 · 37316 · 37317 · 37325 · 37326 · 37333 · 37361 · 37362 · 37369 · 37391
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.