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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

Walnutport Authority

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND40ND
2016ND20ND
2017ND40ND
2018ND20ND
2019ND20ND

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
2014-04-14140014969ND
2014-04-14140014968ND
2014-10-13140046404ND
2015-01-2912324269ND
2015-01-2912324248ND
2015-04-1312670136ND
2015-07-1413052412ND
2016-03-1414023542ND
2016-04-0414151462ND
2017-03-0615839707ND
2017-03-0615839708ND
2017-03-0615839709ND
2017-10-0216775610ND
2018-03-058005766-02ND
2018-03-058005766-01ND
2019-02-049003529-02ND
2019-02-049003529-01ND