CITY OF FRESNO
CA · PWS ID CA1010007 · Community water system
111
contaminants tested
44
detected
545,716
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFOS | 0.0300 ug/L | 43/338 | 2025 |
| PFPeA | 0.0470 ug/L | 39/338 | 2025 |
| PFOA | 0.0160 ug/L | 36/338 | 2025 |
| PFHxA | 0.0340 ug/L | 31/338 | 2025 |
| PFHxS | 0.0300 ug/L | 22/338 | 2025 |
| PFBS | 0.0086 ug/L | 16/338 | 2025 |
| PFHpA | 0.0310 ug/L | 13/338 | 2025 |
| PFNA | 0.0080 ug/L | 6/338 | 2025 |
| PFBA | 0.0260 ug/L | 5/338 | 2025 |
| PFPeS | 0.0053 ug/L | 2/338 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 20000 UG/L | 30428/31174 | SYR4 | 2012–2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.6400 UG/L | 2471/3814 | SYR4 | 2012–2019 |
| Trichloroethylene | 26 UG/L | 834/2603 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 12 UG/L | 511/2606 | SYR4 | 2012–2019 |
| TTHM | 43 UG/L | 295/1440 | SYR4 | 2012–2019 |
| Fluoride | 1900 UG/L | 261/563 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 16000 UG/L | 222/243 | SYR4 | 2017–2019 |
| cis-1,2-Dichloroethylene | 7.1 UG/L | 205/2603 | SYR4 | 2012–2019 |
| Chloroform | 38 UG/L | 196/1442 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 9.1 UG/L | 167/332 | SYR4 | 2012–2019 |
| Bromodichloromethane | 4.7 UG/L | 142/1424 | SYR4 | 2012–2019 |
| ETHYLENE DIBROMIDE | 0.3100 UG/L | 137/3814 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 12 UG/L | 128/318 | SYR4 | 2012–2019 |
| Arsenic | 15 UG/L | 119/526 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.1 UG/L | 69/1392 | SYR4 | 2012–2019 |
| Combined Uranium | 29.8 UG/L | 66/68 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.3 UG/L | 58/286 | SYR4 | 2012–2019 |
| Barium | 420 UG/L | 53/523 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 2.7 UG/L | 50/2603 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0150 mg/L | 32/32 | LCR | 2025 |
| Bromoform | 1.8 UG/L | 16/1382 | SYR4 | 2012–2019 |
| Lead | 42 UG/L | 8/530 | SYR4 | 2012–2019 |
| COPPER, FREE | 330 UG/L | 7/523 | SYR4 | 2012–2019 |
| Chromium | 51 UG/L | 7/523 | SYR4 | 2012–2019 |
| Dibromoacetic acid | 1.2 UG/L | 3/271 | SYR4 | 2012–2019 |
| Selenium | 56 UG/L | 3/524 | SYR4 | 2012–2019 |
| Endothall | 400 UG/L | 2/18 | SYR4 | 2012–2019 |
| Toluene | 1.5 UG/L | 2/2603 | SYR4 | 2012–2019 |
| CHLOROBENZENE | 0.5100 UG/L | 1/2603 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) phthalate | 7.2 UG/L | 1/506 | SYR4 | 2012–2019 |
| Monochloroacetic acid | 2 UG/L | 1/272 | SYR4 | 2012–2019 |
| Styrene | 0.5200 UG/L | 1/2603 | SYR4 | 2012–2019 |
| Xylenes, Total | 1.9 UG/L | 1/2601 | SYR4 | 2012–2019 |
| trans-1,2-Dichloroethylene | 0.5100 UG/L | 1/2603 | SYR4 | 2012–2019 |
67 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 FTS6:2 FTS8:2 FTS9Cl-PF3ONSADONAAntimony, TotalAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalBromateCYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDinosebDiquatEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonobromoacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpSPFMBAPFMPAPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl chloridelithiumo-Dichlorobenzenep-Dichlorobenzene
Areas served
FRESNO