County · Rhode Island
Washington County, Rhode Island: drinking water records
This overview covers 20 ZIP codes and 34 community water systems in Washington County. It also stands in for 4 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Veolia Water Wakefield Rhode Island INC RI1615624 | 22,347 | 120 | 0 | 6 | 3.2 ppb |
| Narragansett Water System-Point Judith RI1858428 | 8,210 | 60 | 0 | 13 | 4.1 ppb |
| Narragansett Water Dept-North End RI1858429 | 4,432 | 120 | 4 | 8 | 1.2 ppb |
| Westerly Water Department RI1559512 | 35,298 | 420 | 7 | 0 | 5.1 ppb |
| North Kingstown Town of RI1559517 | 27,732 | 360 | 6 | 0 | 1.3 ppb |
| University of Rhode Island RI1858422 | 19,354 | 60 | 8 | 0 | 6.4 ppb |
| Block Island Water Company RI1858430 | 9,999 | 60 | 0 | 0 | 0 ppb |
| South Kingstown-South Shore RI1615623 | 6,170 | 120 | 4 | 0 | 6 ppb |
| Kingston Water District RI1858421 | 3,968 | 180 | 5 | 0 | 2.9 ppb |
| Richmond, Town of RI1000040 | 2,671 | 0 | 0 | 1 | 0.3 ppb |
| Central Beach Fire District RI1647512 | 470 | 0 | 0 | 2 | 0.6 ppb |
| Exeter Job Corps Center RI2980475 | 300 | 0 | 0 | 1 | 18.8 ppb |
| Shadow Woods at Deer Brook RI2980426 | 300 | 0 | 0 | 1 | 0 ppb |
| South Trail Commerce RI2980487 | 175 | 0 | 0 | 2 | 1.4 ppb |
| Hillsdale Housing Cooperative, INC. RI2942525 | 170 | 0 | 0 | 3 | 1 ppb |
| Canonchet Cliffs Water Association INC. RI1900053 | 154 | 0 | 0 | 9 | 4 ppb |
| Split Rock Corporation RI2585312 | 138 | 0 | 0 | 1 | 0 ppb |
| Ladd Center Water System RI1592012 | 129 | 0 | 0 | 1 | 64 ppb |
| Hopkinton, Town of RI2980473 | 125 | 0 | 0 | 1 | 0 ppb |
| South Kingstown-Middlebridge RI1000015 | 694 | 0 | 0 | 0 | 1 ppb |
| Quonochontaug East Beach Water Associati RI1647511 | 300 | 0 | 0 | 0 | 2.6 ppb |
| Castle Rock Condominiums RI1000035 | 292 | 0 | 0 | 0 | 2 ppb |
| South Kingstown Nursing and Rehab RI2882117 | 232 | 0 | 0 | 0 | 0 ppb |
| Bethel Village Water Assn RI1000045 | 180 | 0 | 0 | 0 | 5 ppb |
| Richmond Ridge Development RI2980480 | 172 | 0 | 0 | 0 | 1.3 ppb |
ZIP reports in Washington County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 02812, 02836, 02875, 02894.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.