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EWG's Tap Water Database — 2021 UPDATE

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Methomyl

California Water Service - Stockton

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND30ND
2016ND10ND
2017ND50ND
2018ND70ND
2019ND90ND

ppb = parts per billion

All test results

Date Lab ID Result
2015-10-269590-060-1145ND
2015-11-199590-059-1056ND
2015-12-099590-018-0553ND
2016-02-239590-061-1110ND
2017-04-189590-133-1146ND
2017-07-129590-133-1420ND
2017-07-139590-029-1354ND
2017-10-109590-058-0950ND
2017-10-109590-133-1110ND
2018-01-029590-054-1115ND
2018-01-039590-133-0950ND
2018-04-059590-133-1320ND
2018-04-119590-050-1225ND
2018-07-099590-056-1305ND
2018-07-099590-133-1100ND
2018-10-099590-133-1325ND
2019-01-029590-133-1301ND
2019-02-149590-061-1430ND
2019-04-029590-133-1235ND
2019-04-239590-053-1145ND
2019-05-089590-007-1120ND
2019-07-099590-133-1400ND
2019-10-019590-067-1150ND
2019-10-029590-028-1300ND
2019-10-099590-133-1059ND