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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethylene

Collegeville Trappe Joint Public Works Department

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

MORE ABOUT THIS CONTAMINANT

 

168

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND280ND
2015ND280ND
2016ND280ND
2017ND280ND
2018ND280ND
2019ND280ND

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
2014-01-2020140238ND
2014-01-2020140239ND
2014-01-2020140240ND
2014-01-2020140241ND
2014-01-2020140242ND
2014-03-1720140955ND
2014-03-1720140956ND
2014-04-2120141346ND
2014-04-2120141347ND
2014-04-2120141348ND
2014-04-2120141349ND
2014-04-2120141350ND
2014-04-2120141351ND
2014-04-2120141352ND
2014-07-0714070813-001ND
2014-07-0714070813-002ND
2014-07-0714070813-003ND
2014-07-0714070813-004ND
2014-08-1320142789ND
2014-08-1320142790ND
2014-08-1320142791ND
2014-11-1714111750-01ND
2014-11-1714111750-02ND
2014-11-1714111750-03ND
2014-11-1714111750-04ND
2014-11-1714111750-05ND
2014-11-1714111750-06ND
2014-12-0114120200-01ND
2015-01-1912285455ND
2015-01-1912285476ND
2015-01-1912285497ND
2015-01-1912285518ND
2015-01-1912285539ND
2015-01-1912285560ND
2015-01-1912285581ND
2015-04-2012631593ND
2015-04-2012631614ND
2015-04-2012631635ND
2015-04-2012631656ND
2015-04-2012631677ND
2015-04-2012631698ND
2015-04-2012631719ND
2015-07-0613011206ND
2015-07-0613011232ND
2015-07-0613011258ND
2015-07-0613011284ND
2015-07-0613011310ND
2015-07-0613011336ND
2015-07-2013011550ND
2015-10-1913387778ND
2015-10-1913387799ND
2015-10-1913387820ND
2015-10-1913387841ND
2015-10-1913387862ND
2015-10-1913387883ND
2015-10-1913387904ND
2016-01-1813751349ND
2016-01-1813751370ND
2016-01-1813751391ND
2016-01-1813751412ND
2016-01-1813751433ND
2016-01-1813751454ND
2016-02-1613869078ND
2016-04-1814101343ND
2016-04-1814101364ND
2016-04-1814101385ND
2016-04-1814101406ND
2016-04-1814101427ND
2016-04-1814101448ND
2016-04-1814101469ND
2016-07-1814568365ND
2016-07-1814568386ND
2016-07-1814568407ND
2016-07-1814568428ND
2016-07-1814568449ND
2016-07-1814568470ND
2016-07-1814568491ND
2016-10-1715074113ND
2016-10-1715074134ND
2016-10-1715074155ND
2016-10-1715074176ND
2016-10-1715074197ND
2016-10-1715074218ND
2016-10-1715074239ND
2017-02-2715653928ND
2017-02-2715653949ND
2017-02-2715653970ND
2017-02-2715653991ND
2017-02-2715654012ND
2017-03-0715793995ND
2017-03-0715794016ND
2017-04-1715935328ND
2017-04-1715935349ND
2017-04-1715935370ND
2017-04-1715935391ND
2017-04-1715935412ND
2017-04-1715935433ND
2017-04-1715935454ND
2017-07-1716411668ND
2017-07-1716411689ND
2017-07-1716411710ND
2017-07-1716411731ND
2017-07-1716411752ND
2017-07-1716411773ND
2017-07-1716411794ND
2017-10-1616878519ND
2017-10-1616878540ND
2017-10-1616878561ND
2017-10-1616878582ND
2017-10-1616878603ND
2017-10-1616878624ND
2017-10-1616878645ND
2018-01-2220180311ND
2018-01-2220180312ND
2018-01-2220180313ND
2018-01-2220180314ND
2018-01-2220180315ND
2018-01-2220180316ND
2018-01-2220180317ND
2018-04-1820181575ND
2018-04-1820181576ND
2018-04-1820181577ND
2018-04-1820181578ND
2018-04-1820181579ND
2018-04-1820181580ND
2018-04-1820181581ND
2018-07-1620182718ND
2018-07-1620182719ND
2018-07-1620182720ND
2018-07-1620182721ND
2018-07-1620182722ND
2018-07-1620182723ND
2018-07-1620182724ND
2018-10-1520183946ND
2018-10-1520183947ND
2018-10-1520183948ND
2018-10-1520183949ND
2018-10-1520183950ND
2018-10-1520183951ND
2018-10-1520183952ND
2019-01-2320190306ND
2019-01-2320190307ND
2019-01-2320190308ND
2019-01-2320190309ND
2019-01-2320190310ND
2019-01-2320190311ND
2019-01-2320190312ND
2019-04-1520191439ND
2019-04-1520191440ND
2019-04-1520191441ND
2019-04-1520191442ND
2019-04-1520191443ND
2019-04-1520191444ND
2019-04-1520191445ND
2019-07-1520192706ND
2019-07-1520192707ND
2019-07-1520192708ND
2019-07-1520192709ND
2019-07-1520192710ND
2019-07-1520192711ND
2019-07-1520192712ND
2019-10-2120194150ND
2019-10-2120194151ND
2019-10-2120194152ND
2019-10-2120194153ND
2019-10-2120194154ND
2019-10-2120194155ND
2019-10-2120194156ND