Know Your Environment. Protect Your Health.

Methoxychlor

Guilford Water 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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND60ND
2021N/A00N/A
2022N/A00N/A
2023ND100ND

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
2018-05-298055384-01ND
2018-09-048091925-01ND
2018-12-118122846-01ND
2019-03-059032320-01ND
2020-06-0922559576.00ND
2020-06-0922559546.00ND
2020-06-0922559516.00ND
2020-09-0923136519.00ND
2020-09-0923136563.00ND
2020-09-0923136593.00ND
2023-05-2429053433.00ND
2023-05-2429053400.00ND
2023-06-0729253969.00ND
2023-06-0729253958.00ND
2023-06-0729253947.00ND
2023-07-1829651246.00ND
2023-08-0129651253.00ND
2023-08-0129651199.00ND
2023-08-2229840449.00ND
2023-08-2229840465.00ND