Macon County, MO
drinking water quality
15,177 residents · 7 public water systems · 10 ZIP codes
EPA sampled 2 of 7 public water systems here, together serving about 18,354 people. EPA detected PFBA at 9.1 ng/L. EPA has not set a drinking water limit for PFBA, so there is no figure to compare it against. Last sampled 9/4/2024.
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 Macon County
63431 · 63530 · 63532 · 63534 · 63538 · 63539 · 63549 · 63552 · 63558 · 65247
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.