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EWG's Tap Water Database — 2019 UPDATE

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Dieldrin

Holliston Water Department

Dieldrin is a highly toxic insecticide that was banned in the 1970s due to its persistence in the environment and toxicity to people and wildlife.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND60ND
2014N/A00N/A
2015N/A00N/A
2016ND80ND
2017ND10ND

ppb = parts per billion

All test results

Date Result
2012-04-23ND
2012-12-19ND
2013-05-22ND
2013-05-22ND
2013-05-22ND
2013-12-11ND
2013-12-11ND
2013-12-11ND
2016-05-03ND
2016-05-03ND
2016-05-10ND
2016-05-24ND
2016-12-05ND
2016-12-05ND
2016-12-05ND
2016-12-05ND
2017-01-10ND