Permethrin
Golden State Water Company (GSWC) - South San Gabriel
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.
8
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 | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-10-16 | 9J08002-03 | ND |
| 2019-10-16 | 9J08002-04 | ND |
| 2019-10-16 | 9J08002-05 | ND |
| 2020-01-13 | 9L26001-01 | ND |
| 2020-04-17 | 0C30025-02 | ND |
| 2020-04-17 | 0C30025-03 | ND |
| 2020-04-17 | 0C30025-04 | ND |
| 2020-07-17 | 0G06097-01 | ND |