Yosemite Spring Park Util Co
PWSID CA2010005 · Coarsegold, California · serves 5,300 people · groundwater source
F
Failing
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFHxS | 13.8 ppt | 10 ppt | 3/4/2025 |
| PFBS | 13.1 ppt | — | 3/4/2025 |
| PFBS | 12.8 ppt | — | 10/8/2025 |
| PFBS | 11 ppt | — | 9/9/2025 |
| PFBS | 10.3 ppt | — | 3/4/2025 |
| PFBS | 9.5 ppt | — | 3/4/2025 |
| PFBS | 8.2 ppt | — | 9/9/2025 |
| PFOS | 7.9 ppt | 4 ppt | 10/8/2025 |
| PFOA | 7.5 ppt | 4 ppt | 10/8/2025 |
| PFHxS | 6.7 ppt | 10 ppt | 9/9/2025 |
| PFBS | 6.4 ppt | — | 9/9/2025 |
| PFOS | 5.9 ppt | 4 ppt | 3/4/2025 |
| PFOA | 5.3 ppt | 4 ppt | 3/4/2025 |
| PFOS | 5.3 ppt | 4 ppt | 9/9/2025 |
| PFOS | 4.7 ppt | 4 ppt | 3/4/2025 |
| PFBS | 4.5 ppt | — | 3/4/2025 |
| PFPeA | 3.7 ppt | — | 10/8/2025 |
| PFBS | 3.4 ppt | — | 3/4/2025 |
| PFHxA | 3.3 ppt | — | 3/4/2025 |
| PFPeA | 3.2 ppt | — | 3/4/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-10-06 | Lead and Copper Rule | MR | No | Addressed |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | TT | Yes | Unaddressed |
| 2024-10-17 | LEAD AND COPPER RULE REVISIONS | RPT | No | Unaddressed |
| 2022-10-01 | Fluoride | MCL | Yes | Resolved |
| 2022-07-01 | Fluoride | MCL | Yes | Resolved |
| 2022-04-01 | Fluoride | MCL | Yes | Resolved |
| 2022-01-01 | Fluoride | MCL | Yes | Resolved |