SOUTH MONTEBELLO IRRIGATION DIST.
CA · PWS ID CA1910153 · Community water system
109
contaminants tested
17
detected
15,021
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0201 ug/L | 4/4 | 2024 |
| PFOA | 0.0082 ug/L | 3/4 | 2024 |
| PFBS | 0.0049 ug/L | 2/4 | 2024 |
| PFHxA | 0.0066 ug/L | 2/4 | 2024 |
| PFPeA | 0.0067 ug/L | 2/4 | 2024 |
| PFDA | 0.0037 ug/L | 1/4 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Arsenic | 12 UG/L | 217/265 | SYR4 | 2012–2019 |
| Nitrate | 3000 UG/L | 54/66 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0740 mg/L | 50/50 | LCR | 2025 |
| Fluoride | 330 UG/L | 12/12 | SYR4 | 2013–2019 |
| TTHM | 6.6 UG/L | 11/12 | SYR4 | 2014–2019 |
| Dibromochloromethane | 3.1 UG/L | 10/12 | SYR4 | 2014–2019 |
| Bromoform | 2.3 UG/L | 8/12 | SYR4 | 2014–2019 |
| Dibromoacetic acid | 1.5 UG/L | 4/12 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 1.5 UG/L | 4/12 | SYR4 | 2014–2019 |
| Bromodichloromethane | 1.7 UG/L | 3/12 | SYR4 | 2014–2019 |
| lithium | 18.5 ug/L | 2/4 | UCMR-5 | 2024 |
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAtrazineBHC-GAMMABariumBenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChloroformChromiumCombined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDichloroacetic AcidDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonobromoacetic acidMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene