SAN GABRIEL VALLEY WATER CO.-EL MONTE
CA · PWS ID CA1910039 · Community water system
112
contaminants tested
30
detected
248,000
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0100 ug/L | 1/8 | 2025 |
| PFPeA | 0.0056 ug/L | 1/8 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 22000 UG/L | 8778/8888 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 220 UG/L | 5306/15490 | SYR4 | 2012–2019 |
| Trichloroethylene | 140 UG/L | 3970/13986 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 64 UG/L | 2596/13019 | SYR4 | 2012–2019 |
| Carbon tetrachloride | 17 UG/L | 2495/12174 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 6.1 UG/L | 2193/13052 | SYR4 | 2012–2019 |
| 1,2-Dichloroethane | 3.7 UG/L | 1933/12122 | SYR4 | 2012–2019 |
| Chloroform | 4.8 UG/L | 1159/9854 | SYR4 | 2012–2019 |
| TTHM | 15 UG/L | 278/3485 | SYR4 | 2012–2019 |
| Bromoform | 6.9 UG/L | 176/9883 | SYR4 | 2012–2019 |
| Fluoride | 910 UG/L | 167/167 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.2 UG/L | 155/9906 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3.7 UG/L | 62/9883 | SYR4 | 2012–2019 |
| Arsenic | 3.8 UG/L | 60/98 | SYR4 | 2012–2019 |
| Combined Uranium | 14.9 UG/L | 48/50 | SYR4 | 2012–2019 |
| Barium | 220 UG/L | 44/98 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 42/42 | LCR | 2023 |
| Dibromoacetic acid | 2.5 UG/L | 39/154 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 5.5 UG/L | 39/154 | SYR4 | 2012–2019 |
| trans-1,2-Dichloroethylene | 23 UG/L | 26/12014 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 580000 UG/L | 13/13 | SYR4 | 2014–2019 |
| 1,1,2-Trichloroethane | 3.8 UG/L | 6/12008 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 5.8 PCI/L | 2/2 | SYR4 | 2017–2018 |
| Pentachlorophenol | 0.8500 UG/L | 2/69 | SYR4 | 2013–2019 |
| Monochloroacetic acid | 3 UG/L | 1/154 | SYR4 | 2012–2019 |
| Nitrite | 0.4700 UG/L | 1/98 | SYR4 | 2012–2019 |
| Selenium | 5 UG/L | 1/98 | SYR4 | 2012–2019 |
| Toluene | 0.5200 UG/L | 1/12016 | SYR4 | 2012–2019 |
82 contaminants tested, none detected
1,1,1-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDichloroacetic AcidDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonobromoacetic acidNEtFOSAANFDHANMeFOSAAOXAMYLPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPicloramSimazineStyreneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidVinyl chlorideXylenes, Totallithiumo-Dichlorobenzenep-Dichlorobenzene