cis-1,2-Dichloroethylene

Penn Estates Utilities Incorporated

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	7	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	ND	21	ND
2018	ND	3	ND
2019	ND	2	ND

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
2014-02-18	14022690-002	ND
2014-02-18	14022690-001	ND
2014-02-18	14022690-007	ND
2014-02-18	14022690-006	ND
2014-02-18	14022690-005	ND
2014-02-18	14022690-004	ND
2014-02-18	14022690-003	ND
2017-01-23	15535775	ND
2017-01-23	15535669	ND
2017-01-23	15535457	ND
2017-01-23	15535722	ND
2017-01-23	15535510	ND
2017-01-23	15535616	ND
2017-01-23	15535563	ND
2017-06-24	16276989	ND
2017-06-24	16276830	ND
2017-06-24	16276724	ND
2017-06-24	16276671	ND
2017-06-24	16276777	ND
2017-06-24	16276883	ND
2017-06-24	16276936	ND
2017-11-27	17041131	ND
2017-11-27	17040972	ND
2017-11-27	17041078	ND
2017-11-27	17041025	ND
2017-11-27	17040919	ND
2017-11-27	17040866	ND
2017-11-27	17040813	ND
2018-03-12	L7005993-1	ND
2018-04-10	L7015181-1	ND
2018-08-07	L7059500-1	ND
2019-09-26	L7165410-1	ND
2019-11-19	9113396-01	ND