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EWG's Tap Water Database — 2021 UPDATE

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cis-1,2-Dichloroethylene

United Water Pa Mechanicsburg

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
20150.0633 ppb91ND - 0.570 ppb
2016ND70ND
2017ND50ND
2018ND50ND
2019ND60ND

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
2014-02-121071699003ND
2014-02-121071699001ND
2014-04-152001635001ND
2014-04-152001635002ND
2014-07-072016172003ND
2014-10-092033532001ND
2015-02-0312479188ND
2015-02-0312479143ND
2015-05-1112841440ND
2015-05-1112841463ND
2015-07-0712974657ND
2015-07-0712974678ND
2015-10-0713475182ND
2015-10-0713475161ND
2015-10-07134752050.570 ppb
2016-01-1313834605ND
2016-01-1313834582ND
2016-01-1313834626ND
2016-04-1914206403ND
2016-08-1014857576ND
2016-08-1014857597ND
2016-11-1015326808ND
2017-02-0715752205ND
2017-02-1415752249ND
2017-05-0216208285ND
2017-08-0116520098ND
2017-10-1016981635ND
2018-02-232297488001ND
2018-02-232297488002ND
2018-05-011810634-01ND
2018-08-071821380-01ND
2018-11-123000062001ND
2019-01-15H9A0708-01ND
2019-01-15H9A0708-02ND
2019-04-10H9D0711-01ND
2019-08-06H9H0636-01ND
2019-08-07H9H0668-01ND
2019-11-05H9K0519-01ND