Permethrin
City of Hermiston
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.
12
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 | 11 | 0 | ND |
| 2020 | ND | 1 | 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 |
|---|---|---|
| 2019-06-20 | 9F21064-02 | ND |
| 2019-06-20 | 9F21064-03 | ND |
| 2019-06-20 | 9F21064-04 | ND |
| 2019-06-20 | 9F21064-05 | ND |
| 2019-06-20 | 9F21064-01 | ND |
| 2019-09-04 | 9I05026-01 | ND |
| 2019-12-02 | 9L05076-04 | ND |
| 2019-12-03 | 9L05076-02 | ND |
| 2019-12-03 | 9L05076-03 | ND |
| 2019-12-03 | 9L05076-05 | ND |
| 2019-12-03 | 9L05076-01 | ND |
| 2020-03-09 | 0C10047-01 | ND |