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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Horsham Water&sewer Authority

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

MORE ABOUT THIS CONTAMINANT

 

106

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND230ND
2015ND240ND
2016ND220ND
2017ND160ND
2018ND80ND
2019ND130ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-09AE19948ND
2014-01-09AE19956ND
2014-01-09AE19959ND
2014-01-24AE21287ND
2014-02-19AE24091ND
2014-02-19AE24093ND
2014-02-19AE24094ND
2014-02-19AE24099ND
2014-02-19AE24100ND
2014-02-20AE24092ND
2014-04-16AE29642ND
2014-04-16AE29643ND
2014-04-16AE29635ND
2014-04-16AE29638ND
2014-04-16AE29639ND
2014-07-23AE41288ND
2014-07-23AE41289ND
2014-08-13AE43999ND
2014-08-13AE44001ND
2014-08-13AE44009ND
2014-10-08AE51808ND
2014-10-09AE51797ND
2014-10-09AE51805ND
2015-01-1612286580ND
2015-01-1612286600ND
2015-01-1612286618ND
2015-03-0412514934ND
2015-03-0412514955ND
2015-03-0412514976ND
2015-03-0412514997ND
2015-03-0412515018ND
2015-03-0412515039ND
2015-03-0412515060ND
2015-03-0412515081ND
2015-03-0412515102ND
2015-04-1612632986ND
2015-04-1612633028ND
2015-04-1612633049ND
2015-04-2312633007ND
2015-07-1513012138ND
2015-07-1513012180ND
2015-07-1713012117ND
2015-07-1713012159ND
2015-10-1313388711ND
2015-10-1413388648ND
2015-10-1413388669ND
2015-10-1413388690ND
2016-01-1213752673ND
2016-01-1213752694ND
2016-01-1213752715ND
2016-02-1613869795ND
2016-03-1613985439ND
2016-03-1613985460ND
2016-03-1613985496ND
2016-03-1613985523ND
2016-03-1613985544ND
2016-03-1613985565ND
2016-03-1713985418ND
2016-03-1713985481ND
2016-04-2614102742ND
2016-05-1714250256ND
2016-05-1714250277ND
2016-05-1714250298ND
2016-07-1914569334ND
2016-07-1914569355ND
2016-07-1914569376ND
2016-10-2615075516ND
2016-10-2615075537ND
2016-10-2615075558ND
2017-01-0515517119ND
2017-01-0515517077ND
2017-01-2515517098ND
2017-02-1415655266ND
2017-02-1415655287ND
2017-02-1415655308ND
2017-02-1415655245ND
2017-03-3015795467ND
2017-04-0515936816ND
2017-04-0515936837ND
2017-04-0515936858ND
2017-04-1815936795ND
2017-08-0916565743ND
2017-08-1616565701ND
2017-08-1616565722ND
2017-10-1016880012ND
2018-01-30AF74814ND
2018-01-30AF74813ND
2018-02-13AF75932ND
2018-03-23AF79016ND
2018-06-22AF86999ND
2018-08-30AF94269ND
2018-10-03AF96985ND
2018-12-27AG04620ND
2019-02-11AG07771ND
2019-02-11AG07772ND
2019-02-11AG07773ND
2019-02-11AG07775ND
2019-02-27AG09179ND
2019-04-11AG13046ND
2019-04-11AG13047ND
2019-05-09AG16016ND
2019-05-09AG16019ND
2019-05-23AG16891ND
2019-08-21AG28299ND
2019-09-18AG31924ND
2019-09-18AG31925ND