Permethrin
Silverdale Water District 16
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.
15
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 | ND | 4 | 0 | ND |
| 2020 | ND | 11 | 0 | ND |
| 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
| Date | Lab ID | Result |
|---|---|---|
| 2019-09-19 | 201909200158 | ND |
| 2019-09-19 | 201909200149 | ND |
| 2019-09-25 | 201909260222 | ND |
| 2019-09-25 | 201909260192 | ND |
| 2020-02-19 | 202002200074 | ND |
| 2020-02-19 | 202002200085 | ND |
| 2020-02-19 | 202002200102 | ND |
| 2020-02-19 | 202002200098 | ND |
| 2020-08-12 | 202008130299 | ND |
| 2020-08-12 | 202008130298 | ND |
| 2020-08-12 | 202008130186 | ND |
| 2020-08-12 | 202008130188 | ND |
| 2020-08-12 | 202008130180 | ND |
| 2020-08-12 | 202008130296 | ND |
| 2020-08-12 | 202008130122 | ND |