cis-1,2-Dichloroethylene

Emmaus Borough Public Water

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.

MORE ABOUT THIS CONTAMINANT

107

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.250 ppb	20	5	ND - 2.20 ppb
2015	0.300 ppb	20	6	ND - 1.90 ppb
2016	0.300 ppb	20	6	ND - 1.40 ppb
2017	0.315 ppb	20	6	ND - 1.60 ppb
2018	ND	13	0	ND
2019	ND	14	0	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
2014-02-26	140008220	2.20 ppb
2014-02-26	140008221	0.700 ppb
2014-02-26	140008222	0.700 ppb
2014-02-26	140008223	ND
2014-02-26	140008217	ND
2014-02-26	140008218	ND
2014-02-26	140008219	ND
2014-02-26	140008216	ND
2014-05-27	140021794	0.600 ppb
2014-05-27	140021791	ND
2014-05-27	140021792	ND
2014-05-27	140021790	ND
2014-08-28	140038937	ND
2014-08-28	140038934	ND
2014-08-28	140038935	ND
2014-08-28	140038933	ND
2014-11-25	140053580	0.800 ppb
2014-11-25	140053577	ND
2014-11-25	140053578	ND
2014-11-25	140053576	ND
2015-02-24	12434969	1.90 ppb
2015-02-24	12434991	1.10 ppb
2015-02-24	12435012	0.700 ppb
2015-02-24	12435033	ND
2015-02-24	12434903	ND
2015-02-24	12434924	ND
2015-02-24	12434946	ND
2015-02-24	12434882	ND
2015-05-27	12788703	0.700 ppb
2015-05-27	12788665	ND
2015-05-27	12788687	ND
2015-05-27	12788644	ND
2015-08-26	13301777	0.800 ppb
2015-08-26	13301731	ND
2015-08-26	13301752	ND
2015-08-26	13301710	ND
2015-11-23	13548699	0.800 ppb
2015-11-23	13548563	ND
2015-11-23	13548586	ND
2015-11-23	13548542	ND
2016-03-07	14020479	1.40 ppb
2016-03-07	14020501	1.10 ppb
2016-03-07	14020522	0.700 ppb
2016-03-07	14020543	ND
2016-03-07	14020412	ND
2016-03-07	14020433	ND
2016-03-07	14020454	ND
2016-03-07	14020391	ND
2016-05-24	14296585	0.900 ppb
2016-05-24	14296568	ND
2016-05-24	14618842	ND
2016-05-24	14296544	ND
2016-08-30	14785484	0.900 ppb
2016-08-30	14785441	ND
2016-08-30	14785458	ND
2016-08-30	14785423	ND
2016-11-17	15267415	1.000 ppb
2016-11-17	15267378	ND
2016-11-17	15267384	ND
2016-11-17	15267344	ND
2017-03-07	15836014	1.60 ppb
2017-03-07	15836013	1.000 ppb
2017-03-07	15836012	0.800 ppb
2017-03-07	15836011	ND
2017-03-07	15836007	ND
2017-03-07	15836008	ND
2017-03-07	15836009	ND
2017-03-07	15836010	ND
2017-05-24	16142574	0.900 ppb
2017-05-24	16142571	ND
2017-05-24	16142572	ND
2017-05-24	16142573	ND
2017-08-31	16612289	1.000 ppb
2017-08-31	16612286	ND
2017-08-31	16612287	ND
2017-08-31	16612288	ND
2017-11-09	17345741	1.000 ppb
2017-11-09	17345738	ND
2017-11-09	17345739	ND
2017-11-09	17345740	ND
2018-03-08	8003525-02	ND
2018-03-08	8003525-03	ND
2018-03-08	8003525-04	ND
2018-03-08	8003525-01	ND
2018-05-01	8001201-01	ND
2018-05-01	8001201-02	ND
2018-05-01	8001201-03	ND
2018-08-03	8003166-01	ND
2018-08-03	8003166-02	ND
2018-08-03	8003166-03	ND
2018-11-01	8030989-01	ND
2018-11-01	8030989-02	ND
2018-11-01	8030989-03	ND
2019-02-11	9001168-02	ND
2019-02-11	9001168-03	ND
2019-02-11	9001168-04	ND
2019-02-11	9001168-01	ND
2019-04-18	9009850-01	ND
2019-04-18	9009850-02	ND
2019-04-18	9009850-03	ND
2019-07-18	9020517-01RE	ND
2019-07-18	9020517-02RE	ND
2019-07-18	9020517-03RE	ND
2019-11-04	9035700-01	ND
2019-11-04	9035700-02	ND
2019-11-04	9035700-03	ND
2019-11-04	9035700-05	ND