Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
29 of the 169 public water systems listed for Rhode Island were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 169 Rhode Island systems, including those not tested · Download all Rhode Island results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| University Of Rhode Island | RI1858422 | Kingston | 19,354 | 16 | 5 | 1.103 | PFOA ≥ 3 × its limit |
| Quonset Business Park | RI1592025 | North Kingstown | 13,000 | 15 | 5 | 0.86 | PFOA ≥ 3 × its limit |
| Westerly Water Department | RI1559512 | Westerly | 35,298 | 9 | 7 | 0.002 | PFOA 1–3 × its limit |
| North Kingstown Town Of | RI1559517 | North Kingstown | 27,732 | 8.1 | 4.6 | 0.322 | PFOA 1–3 × its limit |
| Cumberland, Town Of | RI1647530 | Cumberland | 21,235 | 7.7 | 6.7 | 0.002 | PFOA 1–3 × its limit |
| Kent County Water Authority | RI1559511 | West Greenwich | 94,107 | 7.5 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Kingston Water District | RI1858421 | West Kingston | 3,968 | 6.2 | <MRL | 0.018 | PFOA 1–3 × its limit |
| South Kingstown-South Shore | RI1615623 | Wakefield | 6,170 | 6.1 | <MRL | 0 | PFOA 1–3 × its limit |
| Woonsocket Water Division | RI1559518 | Woonsocket | 45,828 | 5.8 | <MRL | 0 | PFOA 1–3 × its limit |
| North Tiverton Fire District | RI1592018 | Tiverton | 8,969 | 5.1 | <MRL | 0 | PFOA 1–3 × its limit |
| Narragansett Water Dept-North End | RI1858429 | Narragansett | 4,432 | 4.3 | 4 | 0.003 | PFOA 1–3 × its limit |
| Jamestown Water Department | RI1858419 | Jamestown | 3,348 | <MRL | <MRL | 0 | Other PFAS detected |
| Naval Station, Newport | RI1000016 | Newport | 7,870 | <MRL | <MRL | 0 | Other PFAS detected |
| Newport-City Of | RI1592010 | Newport | 42,155 | <MRL | <MRL | 0 | Other PFAS detected |
| Pawtucket Water Supply Board Veolia-Na | RI1592021 | Pawtucket | 98,130 | <MRL | <MRL | 0 | Other PFAS detected |
| Block Island Water Company | RI1858430 | Block Island | 9,999 | <MRL | <MRL | 0 | No PFAS detected |
| Bristol County Water Authority | RI1647515 | Warren | 49,000 | <MRL | <MRL | 0 | No PFAS detected |
| Brown University Health-Ri Hospital | RI2980469 | Newton | 8,040 | <MRL | <MRL | 0 | No PFAS detected |
| Cne - New London Turnpike Entry Point | RI2980453 | Warwick | 9,999 | <MRL | <MRL | 0 | No PFAS detected |
| East Providence-City Of | RI1615610 | East Providence | 47,961 | <MRL | <MRL | 0 | No PFAS detected |
| Greenville Water District | RI1858410 | Greenville | 9,500 | <MRL | <MRL | 0 | No PFAS detected |
| Lincoln Water Commission | RI1858423 | Lincoln | 21,664 | <MRL | <MRL | 0 | No PFAS detected |
| Narragansett Water System-Point Judith | RI1858428 | Narragansett | 8,210 | <MRL | <MRL | 0 | No PFAS detected |
| Ponaganset High School | RI1583829 | North Scituate | 1,600 | <MRL | <MRL | 0 | No PFAS detected |
| Portsmouth Water & Fire District | RI1592022 | Portsmouth | 17,090 | <MRL | <MRL | 0 | No PFAS detected |
| Providence-City Of | RI1592024 | Providence | 333,142 | <MRL | <MRL | 0 | No PFAS detected |
| Smithfield Water Supply Board | RI1615616 | Smithfield | 9,460 | <MRL | <MRL | 0 | No PFAS detected |
| Veolia Water Wakefield Rhode Island Inc | RI1615624 | Wakefield | 21,225 | <MRL | <MRL | 0 | No PFAS detected |
| Warwick-City Of | RI1615627 | Warwick | 73,289 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.