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EWG's Tap Water Database — 2021 UPDATE

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Methomyl

Northwest Grayson County Water Control and Improvement District 1

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.

 

12

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
2015ND20ND
2016N/A00N/A
2017ND10ND
2018ND50ND
2019ND40ND

ppb = parts per billion

All test results

Date Lab ID Result
2015-07-22Q1528461011ND
2015-07-22Q1528461012ND
2017-11-14Q1758443016ND
2018-02-21Q1807299005ND
2018-05-29Q1821406006ND
2018-09-10Q1835971004ND
2018-11-19Q1847248005ND
2018-11-19Q1847248013ND
2019-03-06Q1909735010ND
2019-06-24Q1939206001ND
2019-09-26Q1969736001ND
2019-12-11Q1979775001ND