Permethrin
Westchester Joint Water Works
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 |
|---|---|---|---|---|
| 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 | 1 | 0 | ND |
| 2019 | ND | 7 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-12 | 7067841001SEA1 | ND |
| 2019-01-14 | 7076522001SEA2 | ND |
| 2019-01-14 | 7076522002SEA2 | ND |
| 2019-02-21 | 7080340001SEA1 | ND |
| 2019-05-01 | 7087950001SEA3 | ND |
| 2019-05-21 | 7090670001SEA3 | ND |
| 2019-06-12 | 7093461011SEA4 | ND |
| 2019-06-12 | 7093461012SEA4 | ND |