PFOS + PFOA + PFHxS + PFNA
City of Spokane
6
Samples
0
Samples exceeding legal limit (MCL)
6
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 5.05 ppt | 6 | 6 | 2.01 ppt - 7.72 ppt |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2023-03-20 | 4429399 | 7.19 ppt |
| 2023-03-22 | 4429394 | 2.01 ppt |
| 2023-04-25 | 4510968 | 7.71 ppt |
| 2023-04-25 | 4510967 | 2.11 ppt |
| 2023-07-25 | 4507771 | 3.58 ppt |
| 2023-10-24 | 4539391 | 7.72 ppt |