1,1-Dichloroethane

Hyannis Water System

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
2013	ND	7	0	ND
2014	0.00200 ppb	17	1	ND - 0.0340 ppb
2015	ND	10	0	ND
2016	ND	9	0	ND
2017	ND	7	0	ND
2018	ND	6	0	ND
2019	ND	9	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	Result
2013-11-20	ND
2013-11-20	ND
2013-11-20	ND
2013-11-20	ND
2013-11-20	ND
2013-11-20	ND
2013-11-20	ND
2014-02-11	ND
2014-04-08	ND
2014-05-22	ND
2014-05-22	ND
2014-05-22	ND
2014-05-22	ND
2014-05-22	ND
2014-05-22	0.0340 ppb
2014-05-22	ND
2014-07-15	ND
2014-07-15	ND
2014-07-15	ND
2014-07-15	ND
2014-07-15	ND
2014-07-15	ND
2014-07-15	ND
2014-10-15	ND
2015-01-13	ND
2015-04-21	ND
2015-07-14	ND
2015-07-14	ND
2015-07-14	ND
2015-07-14	ND
2015-07-14	ND
2015-07-14	ND
2015-07-14	ND
2015-11-03	ND
2016-01-14	ND
2016-04-13	ND
2016-06-08	ND
2016-06-29	ND
2016-07-19	ND
2016-07-19	ND
2016-07-19	ND
2016-07-19	ND
2016-10-11	ND
2017-01-19	ND
2017-04-19	ND
2017-04-19	ND
2017-07-12	ND
2017-07-12	ND
2017-07-12	ND
2017-10-18	ND
2018-01-09	ND
2018-05-03	ND
2018-07-17	ND
2018-07-17	ND
2018-07-17	ND
2018-10-23	ND
2019-01-09	ND
2019-04-11	ND
2019-05-08	ND
2019-05-08	ND
2019-08-09	ND
2019-08-09	ND
2019-08-09	ND
2019-10-08	ND
2019-10-08	ND