MARCOLA WATER DISTRICT
OR · PWS ID OR4100508 · Community water system
103
contaminants tested
11
detected
600
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0068 ug/L | 3/8 | 2024 |
| PFHxS | 0.0074 ug/L | 2/8 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 10300 UG/L | 50/90 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0097 mg/L | 15/15 | LCR | 2025 |
| COPPER, FREE | 540 UG/L | 13/15 | SYR4 | 2013–2019 |
| Arsenic | 10 UG/L | 9/10 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 3100 UG/L | 4/4 | SYR4 | 2013–2019 |
| Barium | 19.6 UG/L | 3/4 | SYR4 | 2013–2019 |
| Lead | 3 UG/L | 3/18 | SYR4 | 2013–2019 |
| Chromium | 1.2 UG/L | 1/4 | SYR4 | 2013–2019 |
| TTHM | 2 UG/L | 1/8 | SYR4 | 2013–2019 |
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-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneCombined Radium (-226 and -228)Combined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon and UHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxAPFMBAPFMPAPFNAPFOAPFPeAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene