1,1-Dichloroethane
California Water Service - San Mateo
NOTE: California Water Service - San Mateo purchases water from San Francisco Regional Water System which is required to test for 1,1-dichloroethane. Sample information shown below was taken by San Francisco Regional 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 4 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 7 | 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
NOTE: California Water Service - San Mateo purchases water from San Francisco Regional Water System which is required to test for 1,1-dichloroethane. Sample information shown below was taken by San Francisco Regional Water System.
Date | Lab ID | Result |
---|---|---|
2014-06-17 | 9553-016-0904 | ND |
2014-06-17 | 9553-001-1130 | ND |
2015-05-27 | 9553-001-1235 | ND |
2015-06-18 | 9553-015-0915 | ND |
2016-06-14 | 9553-015-1231 | ND |
2016-06-21 | 9553-016-1055 | ND |
2017-06-19 | 9553-015-1100 | ND |
2017-06-19 | 9553-016-0953 | ND |
2017-06-19 | 9553-001-1025 | ND |
2018-06-18 | 9553-016-1100 | ND |
2018-06-18 | 9553-001-1032 | ND |
2018-06-28 | 9590-015-0950 | ND |
2019-06-17 | 9553-015-1119 | ND |
2019-06-17 | 9553-001-1012 | ND |
2019-06-24 | 9590-034-1035 | ND |
2019-06-24 | 9590-035-1137 | ND |
2019-06-26 | 9590-031-1430 | ND |
2019-06-26 | 9590-032-0925 | ND |
2019-06-26 | 9590-033-1125 | ND |