Water quality by county
in Rhode Island
EPA sampled public water systems across Rhode Island for PFAS under its UCMR 5 programme. Of the 5 counties, 4 have a reading above a federal limit and 0 have not been sampled at all — which is not a clean result, only an absence of one. Each county below shows what was found, at what concentration, and at which utility.
| county | Population | Worst result | Compound |
|---|---|---|---|
| Washington County | 130,333 | 4.0× | PFOA · 16 ng/L |
| Providence County | 675,912 | 1.9× | PFOA · 7.7 ng/L |
| Kent County | 172,450 | 1.9× | PFOA · 7.5 ng/L |
| Newport County | 83,468 | 1.0× | PFOA · 4 ng/L |
| Bristol County | 50,145 | under the limit | — |