Trentwood Irrigation District 3
PWSID WA5389250 · Spokane, Washington · serves 4,228 people · groundwater source
D
Poor
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFOS | 12 ppt | 4 ppt | 3/6/2024 |
| PFOS | 8.3 ppt | 4 ppt | 12/20/2023 |
| PFOA | 5.1 ppt | 4 ppt | 3/6/2024 |
| PFBS | 4.9 ppt | — | 3/6/2024 |
| PFHxA | 4 ppt | — | 3/6/2024 |
| PFPeA | 3.9 ppt | — | 3/6/2024 |
| PFBS | 3.2 ppt | — | 12/20/2023 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
| Date | Violation | Type | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Nitrate | MR | No | Resolved |
| 2024-07-01 | Consumer Confidence Rule | Other | No | Resolved |
| 2023-07-01 | Revised Total Coliform Rule | MON | No | Resolved |