Know Your Environment. Protect Your Health.

Methoxychlor

Utrwd Regional Water Treatment Plant

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-02-13Q1805957001ND
2018-06-05Q1822319001ND
2018-09-13Q1836570003ND
2018-09-25Q1838256001ND
2019-03-07Q1909910007ND
2019-06-24Q1939574001ND
2019-09-26Q1969362001ND
2019-10-02Q1971112001ND
2019-12-18Q1980808001ND
2020-03-09Q2008448001ND
2020-05-20Q2020089001ND
2020-08-18Q2032859001ND
2020-08-18Q2032859006ND
2020-11-04Q2042753001ND
2021-02-23Q2104596001ND
2021-06-22Q2116334001ND
2021-09-27Q2126305001ND
2021-09-27Q2126305002ND
2021-11-12Q2131799001ND
2022-01-25Q2202436001ND
2022-06-21Q2217160002ND
2022-09-15Q2227673007ND
2022-09-15Q2227673008ND
2022-11-22Q2235058001ND
2023-03-07Q2308901002ND
2023-06-13Q2322487001ND
2023-08-02Q2331445005ND
2023-08-02Q2331445006ND
2023-11-10Q2348307001ND