Permethrin
Tualatin Valley Water District
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.
9
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 | ND | 7 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-25 | 201804260651 | ND |
| 2018-04-25 | 201804260650 | ND |
| 2018-07-17 | 201807190769 | ND |
| 2018-07-17 | 201807190768 | ND |
| 2018-07-17 | 201807190869 | ND |
| 2018-10-15 | 201810170617 | ND |
| 2018-10-15 | 201810170634 | ND |
| 2019-01-15 | 201901160456 | ND |
| 2019-03-05 | 201903060667 | ND |