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EWG's Tap Water Database — 2019 UPDATE

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trans-1,2-Dichloroethylene

Lehigh County Authority Allentown Division

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-12L4002369-3ND
2012-04-12L4002369-1ND
2012-04-12L4002369-2ND
2013-02-07L4430705-3ND
2013-02-07L4430705-1ND
2013-02-07L4430705-2ND
2014-06-1014052283-03ND
2014-06-1014052283-02ND
2014-06-1014052283-01ND
2015-02-1712434489ND
2015-02-1712434468ND
2015-02-1712434447ND
2016-02-1613903475ND
2016-02-1613903496ND
2016-02-1613903517ND
2017-03-2115835548ND
2017-03-2115835569ND
2017-03-2115835590ND