Know Your Environment. Protect Your Health.

Methoxychlor

Boise City Public Works Authority

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND40ND
2020ND40ND
2021ND20ND
2022ND20ND
2023ND20ND

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
2019-07-16BG17050-02ND
2019-07-16BG17050-05ND
2019-10-28BJ29007-02ND
2019-10-28BJ29007-05ND
2020-01-28CA29007-02ND
2020-01-28CA29007-06ND
2020-07-28CG29011-02ND
2020-07-28CG29011-05ND
2021-03-10DC11022-05RE1ND
2021-04-07DD08012-02ND
2022-08-08EH09140-02ND
2022-08-08EH09140-06ND
2023-03-20FC21016-01ND
2023-03-20FC21016-05ND