Permethrin
City of Gilroy
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.
18
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 | 8 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-11-07 | 1811364-009B | ND |
| 2018-11-07 | 1811364-003B | ND |
| 2018-11-07 | 1811364-004B | ND |
| 2018-11-07 | 1811364-008B | ND |
| 2018-11-07 | 1811364-005B | ND |
| 2018-11-07 | 1811364-001B | ND |
| 2018-11-07 | 1811364-006B | ND |
| 2018-11-07 | 1811364-007B | ND |
| 2019-01-07 | 1901311-001A | ND |
| 2019-05-15 | 1905903-005B | ND |
| 2019-05-15 | 1905903-008B | ND |
| 2019-05-15 | 1905903-007B | ND |
| 2019-05-15 | 1905903-006B | ND |
| 2019-05-15 | 1905903-004B | ND |
| 2019-05-15 | 1905903-003B | ND |
| 2019-05-15 | 1905903-002B | ND |
| 2019-05-15 | 1905903-001B | ND |
| 2019-05-28 | 1905F12-001B | ND |