WESTERLY WATER DEPARTMENT
RI · PWS ID RI1559512 · Community water system
97
contaminants tested
17
detected
35,298
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOA | 0.0090 ug/L | 7/14 | 2025 |
| PFHxA | 0.0050 ug/L | 6/14 | 2025 |
| PFOS | 0.0070 ug/L | 5/14 | 2025 |
| PFBS | 0.0030 ug/L | 4/14 | 2025 |
| PFPeA | 0.0060 ug/L | 4/14 | 2025 |
| PFBA | 0.0100 ug/L | 1/14 | 2025 |
| PFHpA | 0.0030 ug/L | 1/14 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 4230 UG/L | 194/194 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 3390 UG/L | 53/53 | SYR4 | 2013–2019 |
| LEAD SUMMARY | 0.0200 mg/L | 29/29 | LCR | 2025 |
| Barium | 96 UG/L | 25/25 | SYR4 | 2013–2017 |
| TTHM | 47.2 UG/L | 18/18 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 24.5 UG/L | 18/18 | SYR4 | 2012–2019 |
| Fluoride | 180 UG/L | 2/25 | SYR4 | 2013–2017 |
| Beryllium, Total | 0.3000 UG/L | 1/25 | SYR4 | 2013–2017 |
| Combined Radium (-226 and -228) | 0.9200 PCI/L | 1/17 | SYR4 | 2013–2017 |
| Gross Alpha, Excl. Radon and U | 3.12 PCI/L | 1/6 | SYR4 | 2013–2014 |
80 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndrinEthylbenzeneGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
WESTERLY