Methoxychlor
CTWC - Unionville System
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 | 8 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 4 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 12 | 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 |
---|---|---|
2014-01-21 | BG01716SOC2 | ND |
2014-01-21 | BG01717SOC2 | ND |
2014-01-21 | BG01713SOC2 | ND |
2014-01-22 | BG01714SOC2 | ND |
2014-01-22 | BG01715SOC2 | ND |
2014-01-22 | BG01718SOC2 | ND |
2014-01-22 | BG01719SOC2 | ND |
2014-02-14 | BG09385SOC2 | ND |
2015-03-03 | 3199324 | ND |
2015-06-03 | 3254573 | ND |
2015-07-13 | BJ46102SOC2 | ND |
2015-07-15 | BJ46999SOC2 | ND |
2017-08-29 | BY91937SOC2 | ND |
2017-08-29 | BY91939SOC2 | ND |
2017-08-29 | BY91938SOC2 | ND |
2017-11-21 | BZ45452SOC2 | ND |
2019-09-17 | SOC 200549386 | ND |
2019-09-17 | SOC 200549392 | ND |
2019-09-25 | SOC 200550426 | ND |
2019-09-25 | SOC 200550428 | ND |
2019-09-25 | SOC 200550427 | ND |
2019-10-02 | SOC 200551433 | ND |
2019-10-02 | SOC 200551434 | ND |
2019-10-09 | SOC 200552469 | ND |
2019-10-10 | SOC 200552468 | ND |
2019-10-10 | SOC 200552467 | ND |
2019-10-10 | SOC 200552466 | ND |
2019-10-10 | SOC 200552465 | ND |