Permethrin
Crescenta Valley CWD
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 |
|---|---|---|---|---|
| 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 | ND | 8 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-09 | 201808091023 | ND |
| 2018-08-09 | 201808090959 | ND |
| 2018-08-09 | 201808090958 | ND |
| 2018-08-09 | 201808100009 | ND |
| 2018-08-09 | 201808090950 | ND |
| 2018-08-09 | 201808090942 | ND |
| 2018-08-09 | 201808091024 | ND |
| 2018-11-14 | 201810090005 | ND |
| 2019-02-19 | 201812020018 | ND |
| 2019-02-19 | 201812020019 | ND |
| 2019-02-19 | 201812020020 | ND |
| 2019-02-19 | 201812020021 | ND |
| 2019-02-19 | 201812020022 | ND |
| 2019-02-19 | 201812020023 | ND |
| 2019-02-19 | 201812020024 | ND |