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EWG's Tap Water Database — 2019 UPDATE

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Methoxychlor

Miramar (East & West) Plants

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND10ND
2014ND40ND
2015ND20ND
20160.0245 ppb21ND - 0.0490 ppb
2017ND20ND

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 Result
2012-09-13ND
2012-09-13ND
2013-09-10ND
2014-09-09ND
2014-09-09ND
2014-11-19ND
2014-11-19ND
2015-09-09ND
2015-09-10ND
2016-09-13ND
2016-09-130.0490 ppb
2017-09-29ND
2017-09-29ND