POMONA - CITY, WATER DEPT.
CA · PWS ID CA1910126 · Community water system
112
contaminants tested
31
detected
151,713
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0032 ug/L | 2/30 | 2024 |
| PFHxA | 0.0041 ug/L | 2/30 | 2024 |
| PFHxS | 0.0079 ug/L | 2/30 | 2024 |
| PFOA | 0.0071 ug/L | 2/30 | 2024 |
| PFOS | 0.0180 ug/L | 2/30 | 2024 |
| PFPeA | 0.0044 ug/L | 2/30 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 29000 UG/L | 8710/8972 | SYR4 | 2012–2019 |
| Trichloroethylene | 130 UG/L | 1632/2496 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 34 UG/L | 1188/2496 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 61 UG/L | 1160/2471 | SYR4 | 2012–2019 |
| TTHM | 51 UG/L | 283/314 | SYR4 | 2012–2019 |
| Chloroform | 25 UG/L | 269/314 | SYR4 | 2012–2019 |
| Bromodichloromethane | 14 UG/L | 267/318 | SYR4 | 2012–2019 |
| Dibromochloromethane | 19 UG/L | 250/320 | SYR4 | 2012–2019 |
| Bromoform | 17 UG/L | 220/317 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 27 UG/L | 180/247 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 16 UG/L | 168/247 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 12 UG/L | 154/247 | SYR4 | 2012–2019 |
| Fluoride | 600 UG/L | 153/153 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 5.8 UG/L | 147/247 | SYR4 | 2012–2019 |
| Chromium | 180 UG/L | 66/307 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 22000 UG/L | 61/78 | SYR4 | 2012–2019 |
| Combined Uranium | 7.003 UG/L | 33/34 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0090 mg/L | 28/28 | LCR | 2025 |
| Arsenic | 11 UG/L | 18/156 | SYR4 | 2012–2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.1100 UG/L | 16/150 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 2.4 UG/L | 10/247 | SYR4 | 2012–2019 |
| Barium | 100 UG/L | 4/156 | SYR4 | 2012–2019 |
| Selenium | 7.2 UG/L | 4/156 | SYR4 | 2012–2019 |
| Thallium, Total | 1.2 UG/L | 1/156 | SYR4 | 2012–2019 |
| lithium | 9.3 ug/L | 1/30 | UCMR-5 | 2024 |
81 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneCombined Radium (-226 and -228)DICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
POMONA