IRVINE RANCH WATER DISTRICT
CA · PWS ID CA3010092 · Community water system
113
contaminants tested
28
detected
444,800
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBA | 0.0079 ug/L | 2/24 | 2025 |
| PFPeA | 0.0038 ug/L | 1/24 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 14012 UG/L | 1316/1774 | SYR4 | 2012–2019 |
| Arsenic | 10.8 UG/L | 495/908 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 950000 UG/L | 455/680 | SYR4 | 2012–2019 |
| Bromodichloromethane | 22.3 UG/L | 364/433 | SYR4 | 2012–2019 |
| TTHM | 72.8 UG/L | 364/420 | SYR4 | 2012–2019 |
| Chloroform | 40.5 UG/L | 362/431 | SYR4 | 2012–2019 |
| Dibromochloromethane | 25 UG/L | 362/434 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 49 UG/L | 349/360 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 27 UG/L | 345/360 | SYR4 | 2012–2019 |
| Bromoform | 25 UG/L | 321/434 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 10 UG/L | 277/360 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 11.6 UG/L | 198/360 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 5.36 UG/L | 171/360 | SYR4 | 2012–2019 |
| Combined Uranium | 16.688 UG/L | 146/161 | SYR4 | 2012–2019 |
| Fluoride | 1580 UG/L | 124/135 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0050 mg/L | 27/27 | LCR | 2025 |
| Monochloroacetic acid | 5.09 UG/L | 27/360 | SYR4 | 2012–2019 |
| lithium | 67.2 ug/L | 18/24 | UCMR-5 | 2025 |
| Combined Radium (-226 and -228) | 0.6730 PCI/L | 17/17 | SYR4 | 2012–2013 |
| Selenium | 21.5 UG/L | 16/151 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 5.43 PCI/L | 13/15 | SYR4 | 2012–2013 |
| Barium | 147 UG/L | 12/149 | SYR4 | 2012–2019 |
| Nitrite | 550 UG/L | 5/897 | SYR4 | 2012–2019 |
| Xylenes, Total | 22.4 UG/L | 2/399 | SYR4 | 2012–2019 |
| Ethylbenzene | 9.05 UG/L | 1/399 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 0.5000 UG/L | 1/396 | SYR4 | 2012–2019 |
85 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-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorNEtFOSAANFDHANMeFOSAAOXAMYLPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFHxSPFMBAPFMPAPFNAPFOAPFOSPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chloridecis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene