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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloropropene

Hyannis Water System

1,1-Dichloropropene is an industrial chemical.

MORE ABOUT THIS CONTAMINANT

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND100ND
2015ND100ND
2016ND90ND
2017ND70ND
2018ND60ND
2019ND90ND

ppb = parts per billion

All test results

Date Result
2014-02-11ND
2014-04-08ND
2014-07-15ND
2014-07-15ND
2014-07-15ND
2014-07-15ND
2014-07-15ND
2014-07-15ND
2014-07-15ND
2014-10-15ND
2015-01-13ND
2015-04-21ND
2015-07-14ND
2015-07-14ND
2015-07-14ND
2015-07-14ND
2015-07-14ND
2015-07-14ND
2015-07-14ND
2015-11-03ND
2016-01-14ND
2016-04-13ND
2016-06-08ND
2016-06-29ND
2016-07-19ND
2016-07-19ND
2016-07-19ND
2016-07-19ND
2016-10-11ND
2017-01-19ND
2017-04-19ND
2017-04-19ND
2017-07-12ND
2017-07-12ND
2017-07-12ND
2017-10-18ND
2018-01-09ND
2018-05-03ND
2018-07-17ND
2018-07-17ND
2018-07-17ND
2018-10-23ND
2019-01-09ND
2019-04-11ND
2019-05-08ND
2019-05-08ND
2019-08-09ND
2019-08-09ND
2019-08-09ND
2019-10-08ND
2019-10-08ND