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EWG's Tap Water Database — 2021 UPDATE

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Methomyl

Cal-water Service Company - Chico

Methomyl is an extremely toxic carbamate insecticide that targets the nervous system. In 2015 the EPA restricted some uses of methomyl on some food crops to reduce risks to human health.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND150ND
2015ND10ND
2016N/A00N/A
2017ND130ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-145810-140-1243ND
2014-01-295810-075-1015ND
2014-01-295810-062-0938ND
2014-02-055810-017-1306ND
2014-02-265810-054-1044ND
2014-03-115810-049-1140ND
2014-04-105810-074-0846ND
2014-04-165810-038-0850ND
2014-04-235810-140-0915ND
2014-05-065810-032-0905ND
2014-05-125810-063-0918ND
2014-05-135810-059-1038ND
2014-05-135810-041-1149ND
2014-06-245810-064-0942ND
2014-12-175810-007-0805ND
2015-07-145810-052-0700ND
2017-01-059590-017-1002ND
2017-01-189590-075-1130ND
2017-01-189590-062-1033ND
2017-02-149590-054-0903ND
2017-03-079590-049-1122ND
2017-03-229590-038-1142ND
2017-04-049590-074-0811ND
2017-05-049590-059-0909ND
2017-05-109590-041-1113ND
2017-05-109590-032-0852ND
2017-05-159590-063-0809ND
2017-06-199590-064-0935ND
2017-11-139590-007-0827ND