Know Your Environment. Protect Your Health.

Methoxychlor

Westwood Shores Municipal Utility District

NOTE: Westwood Shores Municipal Utility District purchases water from Trinity Rural Water Supply Corporation 1 which is required to test for methoxychlor. Sample information shown below was taken by Trinity Rural Water Supply Corporation 1.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
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

NOTE: Westwood Shores Municipal Utility District purchases water from Trinity Rural Water Supply Corporation 1 which is required to test for methoxychlor. Sample information shown below was taken by Trinity Rural Water Supply Corporation 1.

Date Lab ID Result
2018-02-14Q1806541006ND
2019-03-14Q1910847001ND
2020-11-03Q2042584003ND
2021-02-11Q2104195001ND
2022-03-02Q2207194001ND
2023-02-08Q2304961009ND