Permethrin
Arlington Water Department
NOTE: Arlington Water Department purchases water from SNO PUD 1 - Lake Stevens which is required to test for permethrin. Sample information shown below was taken by SNO PUD 1 - Lake Stevens.
Permethrin is an insecticide used on agricultural crops, but most uses are non-agricultural. It can be applied to residential areas to control mosquitoes and ticks and also used as a bug repellent on clothing, as well as medical applications to treat head lice. Long-term exposure to permethrin may harm the liver.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
NOTE: Arlington Water Department purchases water from SNO PUD 1 - Lake Stevens which is required to test for permethrin. Sample information shown below was taken by SNO PUD 1 - Lake Stevens.
| Date | Lab ID | Result |
|---|---|---|
| 2019-01-22 | 19-02669-5700 | ND |
| 2019-01-22 | 19-02669-5701 | ND |
| 2019-04-11 | 19-12542-25460 | ND |
| 2019-07-23 | 19-27105-52792 | ND |
| 2019-07-23 | 19-27105-52793 | ND |
| 2019-11-18 | 19-44092-85165 | ND |