Scioto County, OH
drinking water quality
71,798 residents · 17 public water systems · 14 ZIP codes
EPA sampled 5 of 17 public water systems here, together serving about 80,673 people. The highest reading was PFOA at 5.4 ng/L at Portsmouth City. 1 of the sampled system was above a federal limit. Last sampled 9/6/2023.
What was found
| Compound | Highest result | Federal limit | Ratio |
|---|---|---|---|
| PFOA | 5.4 ng/L | 4 ng/L | 1.4× |
Also detected, with no federal limit set: PFBS (3.5 ng/L).
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 Scioto County
45629 · 45630 · 45636 · 45648 · 45652 · 45653 · 45657 · 45662 · 45663 · 45671 · 45677 · 45682 · 45694 · 45699
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.