COLTON, CITY OF
CA · PWS ID CA3610014 · Community water system
111
contaminants tested
21
detected
46,525
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxS | 0.0051 ug/L | 5/15 | 2025 |
| PFOS | 0.0180 ug/L | 5/15 | 2025 |
| PFBS | 0.0100 ug/L | 3/15 | 2025 |
| PFHxA | 0.0035 ug/L | 2/15 | 2025 |
| PFOA | 0.0059 ug/L | 2/15 | 2025 |
| PFPeA | 0.0045 ug/L | 2/15 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 7700 UG/L | 370/418 | SYR4 | 2012–2019 |
| Fluoride | 1200 UG/L | 95/95 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.2140 mg/L | 32/32 | LCR | 2025 |
| Dibromochloromethane | 4.3 UG/L | 20/24 | SYR4 | 2013–2019 |
| TTHM | 11.5 UG/L | 20/24 | SYR4 | 2013–2019 |
| Arsenic | 6.5 UG/L | 18/39 | SYR4 | 2012–2019 |
| Bromoform | 5.5 UG/L | 17/24 | SYR4 | 2013–2019 |
| Combined Uranium | 13.41 UG/L | 14/14 | SYR4 | 2013–2019 |
| Bromodichloromethane | 2.3 UG/L | 13/24 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 890000 UG/L | 13/20 | SYR4 | 2014–2019 |
| Chloroform | 2.2 UG/L | 10/24 | SYR4 | 2013–2019 |
| Dibromoacetic acid | 1.5 UG/L | 3/23 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 1.5 UG/L | 3/23 | SYR4 | 2013–2019 |
| Monobromoacetic acid | 1.1 UG/L | 1/23 | SYR4 | 2013–2019 |
| cis-1,2-Dichloroethylene | 0.7400 UG/L | 1/42 | SYR4 | 2013–2019 |
90 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, TotalAsbestosAtrazineBHC-GAMMABariumBenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDichloroacetic AcidDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl chlorideXylenes, Totallithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
COLTON