UKIAH, CITY OF
CA · PWS ID CA2310003 · Community water system
113
contaminants tested
25
detected
16,607
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0062 ug/L | 5/16 | 2024 |
| PFOS | 0.0074 ug/L | 5/16 | 2024 |
| PFHxS | 0.0073 ug/L | 3/16 | 2024 |
| 6:2 FTS | 0.0178 ug/L | 1/16 | 2024 |
| PFBA | 0.0092 ug/L | 1/16 | 2024 |
| PFHpA | 0.0033 ug/L | 1/16 | 2024 |
| PFHxA | 0.0044 ug/L | 1/16 | 2024 |
| PFOA | 0.0069 ug/L | 1/16 | 2024 |
| PFPeA | 0.0051 ug/L | 1/16 | 2024 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 39.3 UG/L | 111/136 | SYR4 | 2012–2019 |
| Bromodichloromethane | 8.9 UG/L | 106/136 | SYR4 | 2012–2019 |
| Chloroform | 32.11 UG/L | 104/136 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 33.9 UG/L | 99/133 | SYR4 | 2012–2019 |
| Dibromochloromethane | 4.4 UG/L | 88/136 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 17.1 UG/L | 88/133 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 16.8 UG/L | 87/133 | SYR4 | 2012–2019 |
| Nitrate | 2938 UG/L | 74/86 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0110 mg/L | 22/22 | LCR | 2026 |
| Dibromoacetic acid | 2.2 UG/L | 20/133 | SYR4 | 2012–2019 |
| Fluoride | 170 UG/L | 10/23 | SYR4 | 2012–2019 |
| Barium | 110 UG/L | 5/23 | SYR4 | 2012–2019 |
| Bromoform | 2.61 UG/L | 4/136 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2800 UG/L | 2/5 | SYR4 | 2014–2016 |
| Asbestos | 0.2000 MFL | 1/7 | SYR4 | 2013–2019 |
| Monobromoacetic acid | 1.8 UG/L | 1/133 | SYR4 | 2012–2019 |
88 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 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumCombined Radium (-226 and -228)Combined UraniumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
UKIAH