Methoxychlor
Metropolitan District Commission
Methoxychlor is an endocrine-disrupting, neurotoxic insecticide similar to DDT. Banned in the U.S. in 2002, methoxychlor was historically used on farm animals and in animal feed, lumber, gardens and agricultural crops.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 4 | 0 | ND |
2015 | ND | 10 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 11 | 0 | ND |
2019 | ND | 4 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.09 ppb
The EWG Health Guideline of 0.09 ppb for methoxychlor 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 hormone disruption.
EPA Maximum Contaminant
Level (MCL) 40 ppb
The legal limit for methoxychlor, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-06-25 | SOCR 200398586 | ND |
2014-06-25 | SOCR 200398587 | ND |
2014-06-25 | SOCR 200398588 | ND |
2014-06-25 | SOCR 200398585 | ND |
2015-07-16 | SOCR 200420505 | ND |
2015-07-16 | SOCR 200420506 | ND |
2015-07-16 | SOCR 200420502 | ND |
2015-07-16 | SOCR 200420501 | ND |
2015-07-30 | BJ65999SOC2 | ND |
2015-07-30 | BJ65997SOC2 | ND |
2015-07-30 | BJ65998SOC2 | ND |
2015-10-22 | BK12467SOC2 | ND |
2015-10-22 | BK12468SOC2 | ND |
2015-10-22 | BK12469SOC2 | ND |
2016-07-13 | SOCR 200444754 | ND |
2016-07-13 | SOCR 200444756 | ND |
2016-07-13 | SOCR 200444757 | ND |
2016-07-13 | SOCR 200444758 | ND |
2017-08-14 | SOCR 200474392 | ND |
2017-08-14 | SOCR 200474395 | ND |
2017-08-14 | SOCR 200474393 | ND |
2017-08-14 | SOCR 200474394 | ND |
2018-06-27 | CA79475 | ND |
2018-06-27 | CA79476 | ND |
2018-06-27 | CA79477 | ND |
2018-07-18 | SOCR 200500125 | ND |
2018-07-18 | SOCR 200500126 | ND |
2018-07-18 | SOCR 200500122 | ND |
2018-07-18 | SOCR 200500124 | ND |
2018-09-25 | CB38504 | ND |
2018-09-25 | CB38505R | ND |
2018-09-25 | CB38869 | ND |
2018-09-25 | CB38505 | ND |
2019-07-08 | SOCR 200539197 | ND |
2019-07-08 | SOCR 200539198 | ND |
2019-07-08 | SOCR 200539199 | ND |
2019-07-08 | SOCR 200539200 | ND |