CITY OF ORANGE
CA · PWS ID CA3010027 · Community water system
109
contaminants tested
26
detected
120,770
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFPeA | 0.0177 ug/L | 15/28 | 2025 |
| PFHxA | 0.0101 ug/L | 12/28 | 2025 |
| PFBA | 0.0126 ug/L | 11/28 | 2025 |
| PFOS | 0.0170 ug/L | 5/28 | 2025 |
| PFHxS | 0.0102 ug/L | 4/28 | 2025 |
| PFOA | 0.0093 ug/L | 4/28 | 2025 |
| PFBS | 0.0033 ug/L | 3/28 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 3887.2 UG/L | 302/302 | SYR4 | 2012–2019 |
| TTHM | 84.8 UG/L | 219/244 | SYR4 | 2012–2019 |
| Bromodichloromethane | 22.3 UG/L | 214/245 | SYR4 | 2012–2019 |
| Dibromochloromethane | 27.9 UG/L | 212/245 | SYR4 | 2012–2019 |
| Bromoform | 14.3 UG/L | 211/245 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 30 UG/L | 191/224 | SYR4 | 2012–2019 |
| Chloroform | 27.5 UG/L | 184/245 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13 UG/L | 163/224 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 8.3 UG/L | 159/224 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 9.4 UG/L | 103/224 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 840000 UG/L | 74/74 | SYR4 | 2013–2019 |
| Fluoride | 500 UG/L | 49/49 | SYR4 | 2012–2019 |
| Combined Uranium | 13.5292 UG/L | 33/33 | SYR4 | 2012–2019 |
| Barium | 130 UG/L | 23/57 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 20/20 | LCR | 2024 |
| lithium | 35.2774 ug/L | 15/28 | UCMR-5 | 2025 |
| Arsenic | 5.7 UG/L | 4/60 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 1.8 UG/L | 3/224 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 2.5 UG/L | 3/224 | SYR4 | 2012–2019 |
83 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
ORANGE