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EWG's Tap Water Database — 2021 UPDATE

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1,1-Dichloroethane

San Francisco City 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.

MORE ABOUT THIS CONTAMINANT

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND80ND
2014N/A00N/A
2015N/A00N/A
2016ND10ND
2017N/A00N/A
2018ND170ND
2019ND40ND

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
2013-01-31201302010153AMND
2013-02-20201302220337AMND
2013-04-29201304300195AMND
2013-06-06201306070190AMND
2013-07-30201307310290AMND
2013-08-12201308130156AMND
2013-10-07201310080350AMND
2013-10-10201310110406AMND
2016-06-149553-001-0920ND
2018-01-119553-007-1115ND
2018-03-069590-004-1031ND
2018-03-089590-006-0925ND
2018-04-179590-007-1055ND
2018-04-309590-008-1013ND
2018-06-129590-004-1058ND
2018-06-129590-008-0930ND
2018-07-179590-007-0519ND
2018-07-269553-006-0838ND
2018-09-129590-004-0944ND
2018-09-259553-008-0950ND
2018-09-259553-004-0910ND
2018-09-259553-006-0930ND
2018-10-179553-007-0730ND
2018-12-119553-008-1045ND
2018-12-119553-004-0845ND
2018-12-119553-006-0915ND
2019-06-179553-004-0956ND
2019-06-179553-008-1106ND
2019-06-179553-006-1206ND
2019-06-179553-007-0905ND