YOSEMITE SPRING PARK UTIL CO
CA · PWS ID CA2010005 · Community water system
110
contaminants tested
32
detected
5,300
people served
PFAS detected
“Forever chemicals” from UCMR-5 — the only fresh nationwide measurements (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFBS | 0.0131 ug/L | 9/17 | 2025 |
| PFOS | 0.0079 ug/L | 4/17 | 2025 |
| PFHxS | 0.0138 ug/L | 2/17 | 2025 |
| PFOA | 0.0075 ug/L | 2/17 | 2025 |
| PFPeA | 0.0037 ug/L | 2/17 | 2025 |
| PFHxA | 0.0033 ug/L | 1/17 | 2025 |
Other contaminants detected
| Contaminant | Max | Detection rate | Source | Period |
|---|---|---|---|---|
| Combined Uranium | 30.9473 UG/L | 44/53 | SYR4 | 2012–2018 |
| Fluoride | 2400 UG/L | 37/40 | SYR4 | 2012–2019 |
| Arsenic | 8.5 UG/L | 32/33 | SYR4 | 2012–2019 |
| LEAD SUMMARY | 0.0150 mg/L | 20/20 | LCR | 2022 |
| Barium | 38 UG/L | 18/33 | SYR4 | 2012–2019 |
| lithium | 106 ug/L | 18/18 | UCMR-5 | 2025 |
| Nitrate | 2100 UG/L | 14/336 | SYR4 | 2012–2019 |
| COPPER, FREE | 20 UG/L | 4/33 | SYR4 | 2012–2019 |
| Bromodichloromethane | 12 UG/L | 3/5 | SYR4 | 2012–2018 |
| Bromoform | 1.9 UG/L | 3/5 | SYR4 | 2012–2018 |
| Chloroform | 14 UG/L | 3/5 | SYR4 | 2012–2018 |
| Dibromoacetic acid | 4.4 UG/L | 3/3 | SYR4 | 2015–2018 |
| Dibromochloromethane | 9.1 UG/L | 3/5 | SYR4 | 2012–2018 |
| Dichloroacetic Acid | 7.2 UG/L | 3/3 | SYR4 | 2015–2018 |
| TTHM | 37 UG/L | 3/5 | SYR4 | 2012–2018 |
| Total Haloacetic Acids (HAA5) | 18 UG/L | 3/3 | SYR4 | 2015–2018 |
| Trichloroacetic Acid | 4.2 UG/L | 3/3 | SYR4 | 2015–2018 |
| Asbestos | 6.9 MFL | 2/14 | SYR4 | 2018 |
| CYANIDE | 11 UG/L | 2/14 | SYR4 | 2016–2019 |
| Chromium | 14 UG/L | 2/33 | SYR4 | 2012–2019 |
| Monobromoacetic acid | 2.7 UG/L | 2/3 | SYR4 | 2015–2018 |
| Nitrite | 0.6000 UG/L | 2/168 | SYR4 | 2012–2019 |
| Diquat | 5 UG/L | 1/16 | SYR4 | 2012–2019 |
| Lead | 2.2 UG/L | 1/33 | SYR4 | 2012–2019 |
| Selenium | 1.6 UG/L | 1/33 | SYR4 | 2012–2019 |
| Toluene | 1 UG/L | 1/71 | SYR4 | 2012–2019 |
78 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, TotalAtrazineBHC-GAMMABenzeneBenzo(a)pyreneBeryllium, TotalCHLOROBENZENECadmiumCarbofuranCarbon tetrachlorideChlordaneDICHLOROMETHANEDalaponDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDinosebETHYLENE DIBROMIDEEndothallEndrinEthylbenzeneGlyphosateHEXACHLOROBENZENEHFPO-DAHeptachlorHeptachlor epoxideHexachlorocyclopentadieneLASSOMercuryMethoxychlorMonochloroacetic acidNEtFOSAANFDHANMeFOSAAOXAMYLPFBAPFDAPFDoAPFEESAPFHpAPFHpSPFMBAPFMPAPFNAPFPeSPFTAPFTrDAPFUnAPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl chlorideXylenes, Totalcis-1,2-Dichloroethyleneo-Dichlorobenzenep-Dichlorobenzenetrans-1,2-Dichloroethylene