EPA UCMR 5 results for 29 public water systems. 15 had at least one PFAS detected; 11 had a highest single PFOA or PFOS result above 4.0 ppt.
UCMR 5 is a one-time EPA monitoring program, not a compliance determination. The values shown are the highest single sample result at any of the system's sampling points; one result above 4.0 ppt does not mean the system violates the PFAS rule, which is judged on running annual averages under separate compliance monitoring. Results describe the public water system, not an individual home.
| Water system | Serves | PFOA max (ppt) | PFOS max (ppt) | PFAS detected |
|---|---|---|---|---|
| Block Island Water Company RI1858430 | New Shoreham | ND | ND | 0 |
| Bristol County Water Authority RI1647515 | Barrington, Bristol, Warren | ND | ND | 0 |
| Cne - New London Turnpike Entry Point RI2980453 | Coventry | ND | ND | 0 |
| Cumberland, Town Of RI1647530 | Cumberland | 7.7 | 6.7 | 6 |
| East Providence-City Of RI1615610 | East Providence | ND | ND | 0 |
| Greenville Water District RI1858410 | Smithfield | ND | ND | 0 |
| Jamestown Water Department RI1858419 | Jamestown | ND | ND | 1 |
| Kent County Water Authority RI1559511 | Coventry, Cranston, East Greenwich and others | 7.5 | ND | 6 |
| Kingston Water District RI1858421 | South Kingstown | 6.2 | ND | 5 |
| Lincoln Water Commission RI1858423 | Lincoln | ND | ND | 0 |
| Narragansett Water Dept-North End RI1858429 | Narragansett | 4.3 | 4 | 4 |
| Narragansett Water System-Point Judith RI1858428 | Narragansett | ND | ND | 0 |
| Naval Station, Newport RI1000016 | Newport | ND | ND | 3 |
| Newport-City Of RI1592010 | Middletown, Newport, Portsmouth | ND | ND | 3 |
| North Kingstown Town Of RI1559517 | North Kingstown | 8.1 | 4.6 | 6 |
| North Tiverton Fire District RI1592018 | Tiverton | 5.1 | ND | 2 |
| Pawtucket-City Of RI1592021 | Central Falls, Cumberland, Pawtucket | ND | ND | 1 |
| Ponaganset High School RI1583829 | Glocester | ND | ND | 0 |
| Portsmouth Water & Fire District RI1592022 | Portsmouth | ND | ND | 0 |
| Providence-City Of RI1592024 | Cranston, Johnston, North Providence and others | ND | ND | 0 |
| Quonset Business Park RI1592025 | North Kingstown | 15 | 5 | 7 |
| Rhode Island Hospital - Lifespan RI2980469 | Providence | ND | ND | 0 |
| Smithfield Water Supply Board RI1615616 | Smithfield | ND | ND | 0 |
| South Kingstown-South Shore RI1615623 | South Kingstown | 6.1 | ND | 4 |
| Suez Water Ri RI1615624 | South Kingstown | ND | ND | 0 |
| University of Rhode Island RI1858422 | South Kingstown | 16 | 5 | 8 |
| Warwick-City Of RI1615627 | Warwick | ND | ND | 0 |
| Westerly Water Department RI1559512 | Westerly | 9 | 7 | 7 |
| Woonsocket Water Division RI1559518 | Woonsocket | 5.8 | ND | 5 |
ND = not detected (below the 4 ppt UCMR 5 reporting level). Values are the highest single sample result, not an annual average.