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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Exeter Water Department

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND30ND
20160.280 ppb52ND - 0.800 ppb
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-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
2012-08-081208-00320-001ND
2012-11-071211-00136-001ND
2013-07-18122703.01ND
2013-10-09125385.02ND
2014-07-09133509.01ND
2014-10-09136708.02ND
2015-07-16145750.01ND
2015-09-09147823.01ND
2015-11-18150486.01ND
2016-01-13152193.010.800 ppb
2016-04-07154592.010.600 ppb
2016-07-13158246.01ND
2016-07-21158588.01ND
2016-10-04161298.01ND
2017-02-27165999.01ND
2017-04-12167482.01ND
2017-07-11170940.01ND
2017-07-24171382.01ND
2017-10-03174234.01ND