CLARK PUBLIC UTILITIES
WA · PWS ID WA5313333 · Community water system
109
contaminants tested
26
detected
153,526
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0041 ug/L | 1/20 | 2023 |
| PFHxA | 0.0033 ug/L | 1/20 | 2023 |
| PFHxS | 0.0053 ug/L | 1/20 | 2023 |
| PFOA | 0.0080 ug/L | 1/20 | 2023 |
| PFOS | 0.0084 ug/L | 1/20 | 2023 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 2800 UG/L | 164/430 | SYR4 | 2012–2019 |
| Chloroform | 3.2 UG/L | 21/82 | SYR4 | 2012–2019 |
| TTHM | 6.05 UG/L | 20/20 | SYR4 | 2012–2019 |
| Barium | 78.9 UG/L | 18/30 | SYR4 | 2012–2017 |
| Bromodichloromethane | 2 UG/L | 18/57 | SYR4 | 2012–2019 |
| Arsenic | 6 UG/L | 14/31 | SYR4 | 2012–2017 |
| LEAD SUMMARY | 0.0070 mg/L | 13/13 | LCR | 2025 |
| Dibromochloromethane | 1.2 UG/L | 12/57 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2220 UG/L | 12/30 | SYR4 | 2012–2017 |
| COPPER, FREE | 50 UG/L | 11/30 | SYR4 | 2012–2017 |
| Chromium | 4 UG/L | 8/30 | SYR4 | 2012–2017 |
| Fluoride | 240 UG/L | 8/30 | SYR4 | 2012–2017 |
| Dichloroacetic Acid | 7.2 UG/L | 4/28 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 21.2 UG/L | 4/24 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 15 UG/L | 2/28 | SYR4 | 2012–2019 |
| 1,1,1-Trichloroethane | 1.1 UG/L | 1/54 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 1.1 UG/L | 1/54 | SYR4 | 2012–2019 |
| Bromoform | 0.5500 UG/L | 1/58 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 3.3 PCI/L | 1/1 | SYR4 | 2013 |
| Trichloroethylene | 0.5000 UG/L | 1/54 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.5100 UG/L | 1/54 | SYR4 | 2012–2019 |
83 contaminants tested, none detected
1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDibromoacetic acidDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chloridecis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene