Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dimethoate

City of Napa

Dimethoate is an organophosphate insecticide highly toxic to the nervous system, particularly during pregnancy and childhood.

 

13

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
2015ND30ND
2016ND20ND
2017ND30ND
2018ND20ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-099590-005-1145ND
2014-07-099590-006-1245ND
2014-07-099590-007-0925ND
2015-07-219590-005-1120ND
2015-07-219590-006-1415ND
2015-07-219590-007-0940ND
2016-07-279590-006-1245ND
2016-07-279590-006-1545ND
2017-07-209590-006-1330ND
2017-07-209590-007-1050ND
2017-09-139590-005-0840ND
2018-07-119590-006-1015ND
2018-07-119590-007-1200ND