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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

St John Water District 1

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND60ND
2019ND40ND

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
2014-01-22AD88499ND
2014-01-22AD88499ND
2015-04-0635182606003ND
2015-04-0635182606003ND
2015-10-0835211172003ND
2015-10-0835211172003ND
2016-02-2335231304005ND
2016-02-2335231304005ND
2016-09-2035266509007ND
2016-09-2035266509007ND
2017-01-2535291206002ND
2017-01-2535291206002ND
2017-10-1835343087005ND
2017-10-1835343087005ND
2018-01-2335370117004ND
2018-01-2335370117004ND
2018-05-1435392327001ND
2018-05-1435392327001ND
2018-07-1735405084001ND
2018-07-1735405084001ND
2019-01-2235444040001ND
2019-01-2235444040001ND
2019-07-2535485228001ND
2019-07-2535485228001ND