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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Golden State Water Company - Los Osos

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

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015N/A00N/A
2016ND10ND
2017ND30ND
2018ND10ND
2019ND10ND

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
2014-07-022706-008-0850ND
2016-05-112706-019-0718ND
2017-07-189590-019-1000ND
2017-09-269590-019-0830ND
2017-12-129590-019-1015ND
2018-02-139590-019-0840ND
2019-01-149590-019-1500ND