Permethrin
Issaquah Water System
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-11-04 | 19-42188-81579 | ND |
| 2019-11-04 | 19-42188-81580 | ND |
| 2019-11-04 | 19-42188-81581 | ND |
| 2019-11-04 | 19-42188-81582 | ND |
| 2019-11-04 | 19-42188-81587 | ND |
| 2020-02-04 | 20-04403-8799 | ND |
| 2020-05-05 | 20-14434-27791 | ND |
| 2020-05-05 | 20-14434-27792 | ND |
| 2020-05-05 | 20-14434-27793 | ND |
| 2020-05-05 | 20-14434-27794 | ND |
| 2020-05-05 | 20-14434-27799 | ND |
| 2020-08-03 | 20-26280-49846 | ND |