Calhoun County, FL
drinking water quality
13,278 residents · 8 public water systems · 4 ZIP codes
EPA sampled 1 of 8 public water systems here, together serving about 3,500 people. Last sampled 8/5/2025.
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 Calhoun County
32421 · 32424 · 32430 · 32449
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.