1,1,2,2-Tetrachloroethane

Diana Special Utility District

1,1,2,2-Tetrachloroethane is an industrial chemical which has been used as a metal degreaser, and in paint, paint removers, mothballs and pesticides. It damages the liver and nervous system, and may 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	Range of results
2014	ND	2	ND
2015	ND	6	ND
2016	ND	6	ND
2017	ND	6	ND
2018	ND	6	ND
2019	ND	6	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for 1,1,2,2-tetrachloroethane 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
2014-08-11	Q1435116012	ND
2014-08-11	Q1435116009	ND
2015-07-01	Q1524946012	ND
2015-07-01	Q1524946009	ND
2015-07-01	Q1524946007	ND
2015-07-01	Q1524946005	ND
2015-07-01	Q1524946003	ND
2015-07-01	Q1524946002	ND
2016-11-17	Q1650385026	ND
2016-11-17	Q1650385024	ND
2016-11-17	Q1650385021	ND
2016-11-17	Q1650385019	ND
2016-11-17	Q1650385017	ND
2016-11-17	Q1650385015	ND
2017-08-08	Q1733304010	ND
2017-08-08	Q1733304011	ND
2017-08-08	Q1733304007	ND
2017-08-08	Q1733304005	ND
2017-08-08	Q1733304003	ND
2017-08-08	Q1733304001	ND
2018-02-23	Q1807825001	ND
2018-02-23	Q1807825010	ND
2018-02-23	Q1807825008	ND
2018-09-12	Q1836199012	ND
2018-09-12	Q1836199001	ND
2018-09-12	Q1836199010	ND
2019-02-27	Q1908268012	ND
2019-02-27	Q1908268001	ND
2019-02-27	Q1908268021	ND
2019-02-27	Q1908268019	ND
2019-02-27	Q1908268016	ND
2019-02-27	Q1908268015	ND