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EWG's Tap Water Database — 2021 UPDATE

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Diazinon (Spectracide)

Mesa Water District

Diazinon is a toxic pesticide. The EPA banned residential uses in 2004 and restricted uses on food crops due to safety concerns. Diazinon exposures damage the nervous system, especially during gestation and childhood.

 

32

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
2014ND30ND
2015ND90ND
2016ND10ND
2017ND100ND
2018ND80ND
2019ND10ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppb

The EWG Health Guideline of 1 ppb for diazinon was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against .

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-054417-007-0915ND
2014-05-054417-006-0750ND
2014-08-044417-007-0930ND
2015-03-094417-008-0810ND
2015-03-244417-006-0830ND
2015-04-134417-014-0705ND
2015-04-134417-010-0715ND
2015-05-114417-012-0930ND
2015-05-114417-008-1010ND
2015-07-274417-012-0800ND
2015-08-104417-014-0950ND
2015-08-104417-010-1010ND
2016-06-164417-006-0940ND
2017-02-214417-040-0850ND
2017-05-084417-012-0850ND
2017-05-154417-040-0830ND
2017-06-204417-006-0810ND
2017-07-124417-006-1100ND
2017-08-104417-006-0800ND
2017-08-244417-012-0910ND
2017-08-244417-040-0835ND
2017-10-024417-040-0810ND
2017-10-124417-007-0810ND
2018-03-074417-007-1035ND
2018-03-074417-014-1105ND
2018-04-174417-007-1110ND
2018-05-234417-014-0750ND
2018-05-314417-010-1430ND
2018-08-084417-008-0840ND
2018-08-094417-010-1305ND
2018-10-314417-008-0830ND
2019-07-094417-006-0955ND