Permethrin
City of Humble
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.
10
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 9 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-04-17 | Q1915585001 | ND |
| 2019-04-17 | Q1915585002 | ND |
| 2019-04-17 | Q1915585003 | ND |
| 2019-07-30 | Q1949020001 | ND |
| 2019-08-14 | Q1955710002 | ND |
| 2019-10-29 | Q1974326001 | ND |
| 2019-10-29 | Q1974326002 | ND |
| 2019-10-29 | Q1974326003 | ND |
| 2019-10-29 | Q1974326005 | ND |
| 2020-01-22 | Q2002613001 | ND |