CALISTOGA, CITY OF
CA · PWS ID CA2810002 · Community water system
83
contaminants tested
19
detected
5,610
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxA | 0.0032 ug/L | 1/8 | 2025 |
| PFOA | 0.0064 ug/L | 1/8 | 2025 |
| PFOS | 0.0122 ug/L | 1/8 | 2025 |
| PFPeA | 0.0042 ug/L | 1/8 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 29 UG/L | 67/67 | SYR4 | 2012–2019 |
| Chloroform | 103 UG/L | 67/67 | SYR4 | 2012–2019 |
| TTHM | 122 UG/L | 66/66 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 140 UG/L | 66/66 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 97 UG/L | 66/66 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 46 UG/L | 65/66 | SYR4 | 2012–2019 |
| Dibromochloromethane | 14 UG/L | 43/67 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0700 mg/L | 37/37 | LCR | 2022 |
| Monochloroacetic acid | 12.1 UG/L | 20/66 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.9 UG/L | 7/66 | SYR4 | 2012–2019 |
| Nitrate | 170 UG/L | 6/32 | SYR4 | 2012–2019 |
| Bromoform | 2 UG/L | 2/67 | SYR4 | 2012–2019 |
| Beryllium, Total | 0.1400 UG/L | 1/9 | SYR4 | 2012–2019 |
| COPPER, FREE | 1.4 UG/L | 1/23 | SYR4 | 2012–2019 |
| Chromium | 13 UG/L | 1/9 | SYR4 | 2012–2019 |
64 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalArsenicAsbestosAtrazineBariumBenzeneCHLOROBENZENECadmiumCarbon tetrachlorideDICHLOROMETHANEDalaponEthylbenzeneFluorideHFPO-DALeadMercuryMonobromoacetic acidNEtFOSAANFDHANMeFOSAANitritePFBAPFBSPFDAPFDoAPFEESAPFHpAPFHpSPFHxSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnASeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethylenelithiumo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
CALISTOGA