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EWG's Tap Water Database — 2021 UPDATE

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Methomyl

Metropolitan Water District of So. Cal.

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.

 

20

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
2015ND100ND
2016N/A00N/A
2017N/A00N/A
2018ND100ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2015-04-089588-005-0830ND
2015-04-089588-013-1020ND
2015-04-089588-003-1000ND
2015-04-089588-026-1047ND
2015-04-089588-020-1100ND
2015-11-039588-003-1030ND
2015-11-039588-005-0925ND
2015-11-039588-026-0837ND
2015-11-039588-013-1015ND
2015-11-059588-020-1020ND
2018-04-029588-003-1344ND
2018-04-029588-005-1232ND
2018-04-029588-020-1124ND
2018-04-039588-026-1528ND
2018-04-099588-013-0805ND
2018-10-019588-020-1015ND
2018-10-019588-003-1140ND
2018-10-029588-013-1010ND
2018-10-029588-005-1115ND
2018-10-029588-026-0950ND