1,1-Dichloroethane

Jefferson County Public Water Supply District 6

1,1-Dichloroethane is used in industrial chemical synthesis; in plastics, paint, varnish and finish removers; and as a pesticide. It can cause cancer.

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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	0.303 ppb	8	3	ND - 0.990 ppb
2015	0.660 ppb	4	3	ND - 0.960 ppb
2016	0.685 ppb	4	3	ND - 1.05 ppb
2017	0.184 ppb	7	2	ND - 0.690 ppb
2018	0.139 ppb	8	2	ND - 0.560 ppb
2019	ND	4	0	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 3 ppb

The EWG Health Guideline of 3 ppb for 1,1-dichloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-02-05	AC17713	ND
2014-04-29	AC22529	0.620 ppb
2014-07-30	AC30081	0.810 ppb
2014-08-27	AC33816	ND
2014-08-27	AC33819	ND
2014-08-27	AC33818	ND
2014-08-27	AC33817	ND
2014-12-23	AC37328	0.990 ppb
2015-02-02	AC41372	0.890 ppb
2015-05-11	AC50694	0.790 ppb
2015-08-03	AC55478	0.960 ppb
2015-11-03	AC62089	ND
2016-02-01	AC65846	0.900 ppb
2016-04-28	AC70179	1.05 ppb
2016-08-03	AC80850	0.790 ppb
2016-10-20	AC86080	ND
2017-01-23	AC89910	0.690 ppb
2017-04-25	AC95147	0.600 ppb
2017-07-25	AD02418	ND
2017-08-29	AD04368	ND
2017-08-29	AD04369	ND
2017-08-29	AD04370	ND
2017-10-27	AD08625	ND
2018-01-23	AD12096	0.550 ppb
2018-05-08	AD18748	0.560 ppb
2018-05-08	AD18749	ND
2018-06-25	AD28043	ND
2018-06-25	AD28042	ND
2018-07-13	AD29649	ND
2018-07-13	AD29650	ND
2018-10-18	AD35206	ND
2019-01-15	AD38514	ND
2019-04-17	AD46854	ND
2019-07-18	AD52848	ND
2019-10-23	AD57537	ND