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EWG's Tap Water Database — 2021 UPDATE

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Dinoseb

Block Island Water Company

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND120ND
2016N/A00N/A
2017ND30ND
2018ND130ND
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
2014-09-10E409C65-2_SOCND
2014-11-12E411C57-1_SOCND
2015-03-11E503988-1_SOCND
2015-05-13E505E80-3_SOCND
2015-05-13E505E80-5_SOCND
2015-05-13E505E80-4_SOCND
2015-05-13E505E80-1_SOCND
2015-05-13E505E80-6_SOCND
2015-05-13E505E80-7_SOCND
2015-11-18E511L40-3_SOCND
2015-11-18E511L40-5_SOCND
2015-11-18E511L40-4_SOCND
2015-11-18E511L40-2_SOCND
2015-11-18E511L40-1_SOCND
2017-06-27D7F2727-01_SOCND
2017-08-16D7H2328-02_SOCND
2017-11-08D7K1021-01_SOCND
2018-02-07D8B0696-02_SOCND
2018-04-11D8D1179-01_SOCND
2018-04-11D8D1183-01_SOCND
2018-04-11D8D1177-01_SOCND
2018-04-11D8D1180-01_SOCND
2018-04-11D8D1178-01_SOCND
2018-04-11D8D1181-01_SOCND
2018-11-141811-1745-1_SOCND
2018-11-141811-1744-1_SOCND
2018-11-141811-1746-1_SOCND
2018-11-141811-1742-1_SOCND
2018-11-141811-1741-1_SOCND
2018-12-121812-1495-5_SOCND