CITY OF PLEASANTON
CA · PWS ID CA0110008 · Community water system
111
contaminants tested
26
detected
76,689
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHxS | 0.0220 ug/L | 5/8 | 2025 |
| PFOS | 0.0260 ug/L | 5/8 | 2025 |
| PFBS | 0.0061 ug/L | 4/8 | 2025 |
| PFHxA | 0.0041 ug/L | 4/8 | 2025 |
| PFOA | 0.0051 ug/L | 4/8 | 2025 |
| PFBA | 0.0063 ug/L | 3/8 | 2025 |
| PFPeA | 0.0041 ug/L | 2/8 | 2025 |
| PFPeS | 0.0043 ug/L | 1/8 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 5650 UG/L | 100/100 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0218 mg/L | 32/32 | LCR | 2025 |
| Fluoride | 210 UG/L | 21/26 | SYR4 | 2012–2018 |
| TTHM | 58.45 UG/L | 21/24 | SYR4 | 2019 |
| Total Haloacetic Acids (HAA5) | 26.6 UG/L | 21/24 | SYR4 | 2019 |
| Bromodichloromethane | 8.98 UG/L | 20/24 | SYR4 | 2019 |
| Chloroform | 20.73 UG/L | 20/24 | SYR4 | 2019 |
| Dichloroacetic Acid | 12.4 UG/L | 20/24 | SYR4 | 2019 |
| Dibromochloromethane | 23.7 UG/L | 19/24 | SYR4 | 2019 |
| Trichloroacetic Acid | 12.3 UG/L | 19/24 | SYR4 | 2019 |
| Dibromoacetic acid | 13.7 UG/L | 14/24 | SYR4 | 2019 |
| Barium | 330 UG/L | 9/9 | SYR4 | 2012–2018 |
| Bromoform | 23.26 UG/L | 7/24 | SYR4 | 2019 |
| lithium | 16.8 ug/L | 3/8 | UCMR-5 | 2025 |
| Monobromoacetic acid | 2 UG/L | 2/24 | SYR4 | 2019 |
| Combined Uranium | 2.831 UG/L | 1/1 | SYR4 | 2018 |
| Glyphosate | 50 UG/L | 1/14 | SYR4 | 2014–2018 |
| Gross Beta Particle Activity | 0.5290 PCI/L | 1/1 | SYR4 | 2018 |
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, TotalArsenicAsbestosAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECOPPER, FREECYANIDECadmiumCarbofuranCarbon tetrachlorideChlordaneChromiumDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebDiquatETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOLeadMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAANitriteOXAMYLPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFTAPFTrDAPFUnAPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene
Areas served
PLEASANTON