Perfluoro(2-ethoxyethane)sulfonic acid
City of Mercer Island
NOTE: City of Mercer Island purchases water from Seattle Public Utilities which is required to test for perfluoro(2-ethoxyethane)sulfonic acid. Sample information shown below was taken by Seattle Public Utilities.
8
Samples
0
Samples exceeding legal limit (MCL)
0
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 | ND | 2 | 0 | ND |
| 2024 | ND | 2 | 0 | ND |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
ppt = parts per trillion
All test results
NOTE: City of Mercer Island purchases water from Seattle Public Utilities which is required to test for perfluoro(2-ethoxyethane)sulfonic acid. Sample information shown below was taken by Seattle Public Utilities.
| Date | Lab ID | Result |
|---|---|---|
| 2023-06-27 | 4569033 | ND |
| 2023-06-27 | 4569036 | ND |
| 2023-07-18 | 4569037 | ND |
| 2023-07-18 | 4569044 | ND |
| 2023-10-24 | 4569042 | ND |
| 2023-10-24 | 4569038 | ND |
| 2023-12-18 | 4583988 | ND |
| 2023-12-18 | 4583989 | ND |