CALIFORNIA WATER SERVICE CO. - ELA
CA · PWS ID CA1910036 · Community water system
113
contaminants tested
37
detected
152,474
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0080 ug/L | 5/22 | 2025 |
| PFPeA | 0.0129 ug/L | 5/22 | 2025 |
| PFHxA | 0.0076 ug/L | 4/22 | 2025 |
| PFBS | 0.0049 ug/L | 3/22 | 2025 |
| PFOS | 0.0086 ug/L | 2/22 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 9266 UG/L | 1940/1950 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 3.44 UG/L | 960/1616 | SYR4 | 2012–2019 |
| Trichloroethylene | 9.19 UG/L | 690/1616 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 5.94 UG/L | 641/1616 | SYR4 | 2012–2019 |
| Fluoride | 950 UG/L | 574/574 | SYR4 | 2012–2019 |
| TTHM | 59.4 UG/L | 400/1306 | SYR4 | 2012–2019 |
| Chloroform | 28.13 UG/L | 300/1307 | SYR4 | 2012–2019 |
| Bromodichloromethane | 19.51 UG/L | 217/1307 | SYR4 | 2012–2019 |
| Dibromochloromethane | 21.35 UG/L | 217/1307 | SYR4 | 2012–2019 |
| Bromoform | 8.67 UG/L | 214/1307 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 23 UG/L | 199/241 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 8.2 UG/L | 194/241 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 39 UG/L | 194/241 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 13 UG/L | 175/241 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 38/38 | LCR | 2023 |
| Barium | 160 UG/L | 18/43 | SYR4 | 2012–2019 |
| Arsenic | 8.4 UG/L | 17/48 | SYR4 | 2012–2019 |
| Chromium | 18 UG/L | 16/63 | SYR4 | 2012–2019 |
| Combined Uranium | 9.39594 UG/L | 13/40 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 1.6 UG/L | 13/241 | SYR4 | 2012–2019 |
| COPPER, FREE | 120 UG/L | 10/551 | SYR4 | 2012–2019 |
| Antimony, Total | 0.0810 UG/L | 9/48 | SYR4 | 2012–2019 |
| Lead | 11 UG/L | 9/46 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 6600 UG/L | 9/10 | SYR4 | 2016–2019 |
| Selenium | 5.7 UG/L | 9/46 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 2.6 UG/L | 6/241 | SYR4 | 2012–2019 |
| lithium | 47.1 ug/L | 6/22 | UCMR-5 | 2025 |
| Beryllium, Total | 0.0050 UG/L | 5/43 | SYR4 | 2012–2019 |
| Cadmium | 0.0150 UG/L | 3/48 | SYR4 | 2012–2019 |
| Combined Radium (-226 and -228) | 2.47 PCI/L | 1/1 | SYR4 | 2018 |
| Ethylbenzene | 0.5000 UG/L | 1/1616 | SYR4 | 2012–2019 |
| Xylenes, Total | 3 UG/L | 1/1605 | SYR4 | 2012–2019 |
76 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBromateCHLOROBENZENECYANIDECarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinGlyphosateGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFOAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chloridecis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene