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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Bethesda WSC

Dinoseb is a herbicide that causes birth defects and reproductive difficulties. It has been banned in the U.S. since 1986.

MORE ABOUT THIS CONTAMINANT

 

26

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
2014ND110ND
2015N/A00N/A
2016ND40ND
2017ND110ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 7 ppb

The legal limit for dinoseb, established in 1992, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-06-13Q1421328007ND
2014-06-13Q1421328006ND
2014-10-07Q1451274032ND
2014-10-07Q1451274031ND
2014-10-07Q1451274030ND
2014-10-07Q1451274029ND
2014-10-07Q1451274028ND
2014-10-07Q1451274027ND
2014-10-07Q1451274026ND
2014-10-07Q1451274025ND
2014-10-07Q1451274024ND
2016-11-08Q1648213014ND
2016-11-08Q1648213015ND
2016-11-08Q1648213013ND
2016-11-08Q1648213012ND
2017-01-31Q1704122001ND
2017-01-31Q1704122023ND
2017-10-17Q1753293027ND
2017-10-17Q1753293018ND
2017-10-17Q1753293048ND
2017-10-17Q1753293017ND
2017-10-17Q1753293047ND
2017-10-17Q1753293016ND
2017-11-01Q1756223008ND
2017-11-01Q1756223032ND
2017-11-01Q1756223031ND