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EWG's Tap Water Database — 2021 UPDATE

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Methoxychlor

Cassatt Water Kershaw-lee Company RWA

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.

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015N/A00N/A
2016ND100ND
2017ND10ND
2018N/A00N/A
2019ND120ND

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
2014-01-22AD34864ND
2014-03-21AD37449ND
2014-04-23AD38844ND
2014-04-23AD38845ND
2014-08-13AD44050ND
2014-10-30AD47415ND
2016-04-19AD74644ND
2016-04-19AD74643ND
2016-04-19AD74642ND
2016-04-25AD74833ND
2016-04-25AD74840ND
2016-04-25AD74839ND
2016-04-25AD74835ND
2016-04-25AD74834ND
2016-05-18AD76187ND
2016-12-13AD87138ND
2017-11-14AE03765ND
2019-04-24AE29257ND
2019-04-24AE29260ND
2019-04-24AE29258ND
2019-05-01AE29685ND
2019-05-01AE29686ND
2019-05-01AE29691ND
2019-05-01AE29688ND
2019-05-01AE29692ND
2019-05-01AE29689ND
2019-05-01AE29684ND
2019-05-01AE29682ND
2019-08-14AE35357ND