Model Irrigation Dist #18
PWSID WA5355550 · Spokane, Washington · serves 7,903 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFPeA | 5.8 ppt | — | 6/16/2025 |
| PFOS | 5.3 ppt | 4 ppt | 11/19/2025 |
| PFOS | 5.2 ppt | 4 ppt | 3/3/2026 |
| PFPeA | 4.6 ppt | — | 11/19/2025 |
| PFOA | 4.2 ppt | 4 ppt | 6/16/2025 |
| PFHxA | 3.9 ppt | — | 6/16/2025 |
| PFPeA | 3.8 ppt | — | 3/3/2026 |
| PFHxA | 3.7 ppt | — | 11/19/2025 |
| PFBS | 3.7 ppt | — | 3/3/2026 |
| PFBS | 3.4 ppt | — | 11/19/2025 |
| PFBS | 3 ppt | — | 6/16/2025 |
| PFBS | 3 ppt | — | 11/19/2025 |
| PFHxA | 3 ppt | — | 3/3/2026 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2024-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2022-01-01 | Lead and Copper Rule | MR | No | Resolved |