Permethrin
Horsham Water&sewer Authority
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 |
|---|---|---|---|---|
| 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 | 11 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-06-14 | 3964739 | ND |
| 2018-06-20 | 3969611 | ND |
| 2018-09-11 | 4054973 | ND |
| 2018-09-11 | 4054992 | ND |
| 2018-09-12 | 4061034 | ND |
| 2018-09-12 | 4061115 | ND |
| 2018-09-13 | 4061990 | ND |
| 2018-09-13 | 4061984 | ND |
| 2018-09-13 | 4061987 | ND |
| 2018-12-06 | 4145550 | ND |
| 2018-12-12 | 4150219 | ND |
| 2019-03-13 | 4228170 | ND |
| 2019-09-18 | 4434594 | ND |
| 2019-09-18 | 4434598 | ND |
| 2019-09-18 | 4434476 | ND |