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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Orange County WCID 1

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015N/A00N/A
2016N/A00N/A
2017ND50ND
2018ND10ND
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
2014-04-17AC51135ND
2014-04-17AC51137ND
2017-02-21AD71329ND
2017-02-21AD71326ND
2017-05-23AD85296ND
2017-08-25AD94547ND
2017-11-07AE04146ND
2018-02-14AE13841ND