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EWG's Tap Water Database — 2021 UPDATE

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Methoxychlor

Daphne

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016ND140ND
2017N/A00N/A
2018ND20ND
2019ND140ND

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
2016-01-13160114023-1ND
2016-01-13160114023-4ND
2016-01-13160114023-2ND
2016-01-13160114023-3ND
2016-04-13160413097-1ND
2016-04-13160414034-1ND
2016-04-13160414034-6ND
2016-04-13160414034-5ND
2016-04-13160414034-3ND
2016-04-13160414034-2ND
2016-04-13160414034-4ND
2016-07-13160714055-2ND
2016-07-13160714055-1ND
2016-07-13160714055-3ND
2018-09-2518090666-001BND
2018-11-0518110114-001BND
2019-01-1619010493-003BND
2019-01-1619010493-002BND
2019-01-1619010493-001BND
2019-04-0819040337-001AND
2019-04-0819040337-002AND
2019-06-1320108289001_ISOCND
2019-06-1320108289002_ISOCND
2019-06-1320108289003_ISOCND
2019-09-1220121489002_ISOCND
2019-09-1220121489003_ISOCND
2019-09-1220121489001_ISOCND
2019-10-1420126124001_ISOCND
2019-10-1420126124002_ISOCND
2019-11-1820131097001_ISOCND