Permethrin
Nob Hill Water Association
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 9 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-04-29 | 19-14919-30087 | ND |
| 2019-04-29 | 19-14919-30088 | ND |
| 2019-04-29 | 19-14919-30089 | ND |
| 2019-04-29 | 19-14919-30090 | ND |
| 2019-05-28 | 19-19340-38060 | ND |
| 2019-10-01 | 19-37906-73630 | ND |
| 2019-10-01 | 19-37906-73631 | ND |
| 2019-10-01 | 19-37906-73632 | ND |
| 2019-11-25 | 19-45201-87382 | ND |