Permethrin
City of Norfolk
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 | ND | 8 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-13 | 201802150880 | ND |
| 2018-02-13 | 201802150881 | ND |
| 2018-05-08 | 201805091294 | ND |
| 2018-05-08 | 201805091295 | ND |
| 2018-08-14 | 201808151164 | ND |
| 2018-08-14 | 201808151116 | ND |
| 2018-11-13 | 201811140448 | ND |
| 2018-11-13 | 201811140471 | ND |