Permethrin
City of Concord
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 | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-08-13 | 35490407001SEA1 | ND |
| 2019-08-13 | 35490407002SEA1 | ND |
| 2019-08-13 | 35490407003SEA1 | ND |
| 2019-11-12 | 35512018001SEA2 | ND |
| 2019-11-12 | 35512018002SEA2 | ND |
| 2019-11-12 | 35512018003SEA2 | ND |
| 2020-02-11 | 35530539001SEA3 | ND |
| 2020-02-11 | 35530539002SEA3 | ND |
| 2020-02-11 | 35530539003SEA3 | ND |
| 2020-05-12 | 35549992001SEA4 | ND |
| 2020-05-12 | 35549992002SEA4 | ND |
| 2020-05-12 | 35549992003SEA4 | ND |