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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Southwest Ouachita Waterworks Inc.

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND20ND
2016N/A00N/A
2017ND140ND
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
2014-06-16AD92414ND
2014-06-16AD92413ND
2014-06-16AD92414ND
2014-06-16AD92413ND
2014-08-11AD95317ND
2014-08-11AD95317ND
2014-08-11AD95318ND
2014-08-11AD95318ND
2014-10-20AD98780ND
2014-10-20AD98781ND
2014-10-20AD98782ND
2014-10-20AD98783ND
2014-10-20AD98783ND
2014-10-20AD98782ND
2014-10-20AD98781ND
2014-10-20AD98780ND
2015-01-05AE00867ND
2015-01-05AE00867ND
2017-06-1235318592003ND
2017-06-1235318592002ND
2017-06-1235318592001ND
2017-06-1235318592001ND
2017-06-1235318592002ND
2017-06-1235318592003ND
2017-10-1635343270001ND
2017-10-1635343270004ND
2017-10-1635343270003ND
2017-10-1635343270002ND
2017-10-1635343270001ND
2017-10-1635343270004ND
2017-10-1635343270003ND
2017-10-1635343270002ND