Permethrin
City of Friendswood
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.
19
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 | 19 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-07 | Q1809246001 | ND |
| 2018-03-07 | Q1809246007 | ND |
| 2018-03-07 | Q1809246006 | ND |
| 2018-03-07 | Q1809246005 | ND |
| 2018-03-07 | Q1809246004 | ND |
| 2018-03-07 | Q1809246003 | ND |
| 2018-03-07 | Q1809246002 | ND |
| 2018-06-12 | Q1823288001 | ND |
| 2018-06-12 | Q1823288002 | ND |
| 2018-09-26 | Q1838563004 | ND |
| 2018-09-26 | Q1838563003 | ND |
| 2018-09-26 | Q1838563005 | ND |
| 2018-09-26 | Q1838563006 | ND |
| 2018-09-26 | Q1838563002 | ND |
| 2018-09-26 | Q1838563007 | ND |
| 2018-09-26 | Q1838563001 | ND |
| 2018-09-26 | Q1838563008 | ND |
| 2018-12-19 | Q1852220001 | ND |
| 2018-12-19 | Q1852220002 | ND |