Permethrin
City of Pasadena
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.
22
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 | 9 | 0 | ND |
| 2019 | ND | 13 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-11-28 | Q1848594001 | ND |
| 2018-11-28 | Q1848594002 | ND |
| 2018-11-28 | Q1848594009 | ND |
| 2018-11-28 | Q1848594003 | ND |
| 2018-11-28 | Q1848594008 | ND |
| 2018-11-28 | Q1848594004 | ND |
| 2018-11-28 | Q1848594007 | ND |
| 2018-11-28 | Q1848594005 | ND |
| 2018-11-28 | Q1848594006 | ND |
| 2019-02-13 | Q1906552001 | ND |
| 2019-02-13 | Q1906552002 | ND |
| 2019-02-13 | Q1906552003 | ND |
| 2019-05-28 | Q1929058001 | ND |
| 2019-05-28 | Q1929058006 | ND |
| 2019-05-28 | Q1929058005 | ND |
| 2019-05-28 | Q1929058004 | ND |
| 2019-05-28 | Q1929058003 | ND |
| 2019-05-28 | Q1929058002 | ND |
| 2019-05-29 | Q1929058007 | ND |
| 2019-05-29 | Q1929058008 | ND |
| 2019-08-19 | Q1956469002 | ND |
| 2019-08-19 | Q1956469001 | ND |