Know Your Environment. Protect Your Health.

Methoxychlor

Lafayette Utilities Water System

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND200ND
2019ND140ND
2020ND70ND
2021ND140ND
2022ND60ND
2023ND30ND

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
2018-03-0535378308005ND
2018-03-0535378308001ND
2018-03-0535378308005ND
2018-03-0535378308004ND
2018-03-0535378308003ND
2018-03-0535378308002ND
2018-03-0535378308001ND
2018-03-0535378308002ND
2018-03-0535378308003ND
2018-03-0535378308004ND
2018-04-3035389627001ND
2018-04-3035389627001ND
2018-05-1435392629001ND
2018-05-1435392629001ND
2018-06-1935399735001ND
2018-06-1935399735001ND
2018-06-1935399735002ND
2018-06-1935399735003ND
2018-06-1935399735003ND
2018-06-1935399735002ND
2019-01-1435442609001ND
2019-01-1435442609002ND
2019-01-1435442609001ND
2019-01-1435442609002ND
2019-08-1235490056002ND
2019-08-1235490056004ND
2019-08-1235490056003ND
2019-08-1235490056002ND
2019-08-1235490056001ND
2019-08-1235490056005ND
2019-08-1235490056004ND
2019-08-1235490056003ND
2019-08-1235490056001ND
2019-08-1235490056005ND
2020-07-2035564847003ND
2020-07-2035564847002ND
2020-07-2035564847001ND
2020-09-0835576522002ND
2020-09-0835576522001ND
2020-11-2435594841003ND
2020-11-2435594841002ND
2021-02-0835610875003ND
2021-02-0835610875002ND
2021-02-0835610872005ND
2021-02-0835610872004ND
2021-02-0835610872003ND
2021-02-0835610872001ND
2021-02-0835610872002ND
2021-06-1435641565001ND
2021-06-2135642603003ND
2021-06-2135642603005ND
2021-06-2135642603004ND
2021-06-2135642603002ND
2021-06-2135642603001ND
2021-06-2135642592001ND
2022-05-2335720206001ND
2022-05-2335720206002ND
2022-05-2335720206003ND
2022-05-2335720206004ND
2022-05-2335720206005ND
2022-05-2335720206006ND
2023-05-2235801891004ND
2023-05-2235801891005ND
2023-05-2235801891006ND