Lindane
Castle Rock
Lindane is a neurotoxic and carcinogenic insecticide phased out of agricultural use in the U.S. since 2002. It is prescribed to treat lice or scabies, although safer alternatives are available.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 7 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 10 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 8 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.032 ppb
The EWG Health Guideline of 0.032 ppb for lindane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL) 0.2 ppb
The legal limit for lindane, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2014-02-26 | ND |
| 2014-04-29 | ND |
| 2014-07-21 | ND |
| 2014-07-22 | ND |
| 2014-11-19 | ND |
| 2014-12-04 | ND |
| 2014-12-04 | ND |
| 2015-08-05 | ND |
| 2016-02-23 | ND |
| 2016-02-24 | ND |
| 2016-05-23 | ND |
| 2016-06-27 | ND |
| 2016-07-18 | ND |
| 2016-11-14 | ND |
| 2017-02-21 | ND |
| 2017-02-21 | ND |
| 2017-03-22 | ND |
| 2017-04-18 | ND |
| 2017-04-18 | ND |
| 2017-05-16 | ND |
| 2017-06-21 | ND |
| 2017-07-17 | ND |
| 2017-07-17 | ND |
| 2017-10-18 | ND |
| 2018-03-20 | ND |
| 2018-03-20 | ND |
| 2018-05-21 | ND |
| 2018-08-30 | ND |
| 2018-09-13 | ND |
| 2018-11-16 | ND |
| 2018-12-12 | ND |
| 2018-12-12 | ND |
| 2019-02-07 | ND |
| 2019-04-17 | ND |
| 2019-09-16 | ND |
| 2019-09-16 | ND |
| 2019-11-05 | ND |
| 2019-11-25 | ND |
| 2019-12-11 | ND |
| 2019-12-11 | ND |