Permethrin
City of Richland
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 |
|---|---|---|---|---|
| 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 | 10 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-04-09 | 19-12704-25801 | ND |
| 2019-04-09 | 19-12704-25800 | ND |
| 2019-04-09 | 19-12704-25798 | ND |
| 2019-04-09 | 19-12704-25799 | ND |
| 2019-07-09 | 19-25923-50395 | ND |
| 2019-07-09 | 19-25923-50396 | ND |
| 2019-10-29 | 19-41720-80839 | ND |
| 2019-10-29 | 19-41720-80840 | ND |
| 2019-11-19 | 19-45115-87256 | ND |
| 2019-11-19 | 19-45115-87257 | ND |
| 2020-01-08 | 20-01323-2539 | ND |
| 2020-01-08 | 20-01323-2540 | ND |