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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Cassatt Water Kershaw-lee Company RWA

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

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015N/A00N/A
2016ND110ND
2017N/A00N/A
2018N/A00N/A
2019ND120ND

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
2014-01-22AD34864ND
2014-01-22AD34860ND
2014-04-23AD38844ND
2014-04-23AD38845ND
2014-08-13AD44050ND
2014-10-30AD47415ND
2016-04-19AD74644ND
2016-04-19AD74643ND
2016-04-19AD74641ND
2016-04-19AD74642ND
2016-04-25AD74831ND
2016-04-25AD74828ND
2016-04-25AD74829ND
2016-04-25AD74830ND
2016-04-25AD74832ND
2016-09-15AD82548ND
2016-09-19AD82888ND
2019-04-24AE29261ND
2019-04-24AE29257ND
2019-04-24AE29260ND
2019-04-24AE29258ND
2019-05-01AE29691ND
2019-05-01AE29688ND
2019-05-01AE29692ND
2019-05-01AE29689ND
2019-05-01AE29686ND
2019-05-01AE29685ND
2019-05-01AE29684ND
2019-05-01AE29682ND