Know Your Environment. Protect Your Health.

Methoxychlor

S L M Water 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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND50ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-1618A0286-01_01ND
2018-05-0818E0393-01ND
2018-08-2218H1118-01ND
2018-10-3018J1017-01_01ND
2019-02-2619B0547-01ND
2019-06-1119F0337-01ND
2019-08-0719H0367-01ND
2019-10-2319J0875-01ND
2020-03-0420C0248-01ND
2020-06-0820F0113-01ND
2020-08-2520H1062-01ND
2020-11-0920K0248-01ND
2021-03-1121C0432-01ND
2021-04-2721D0726-01ND
2021-08-1821H1027-01ND
2021-11-1721K0665-01ND
2022-03-1522C0413-01ND
2022-05-1722E0541-01ND
2022-08-1622H0828-01ND
2022-11-2222K0647-01ND
2022-12-1422L0299-01ND
2023-02-2123B0622-01ND
2023-06-0623F0268-01ND
2023-08-2223H1187-01ND
2023-11-0623K0114-01ND