1,1-Dichloroethane
City of Chesapeake - Western Branch System
NOTE: City of Chesapeake - Western Branch System purchases water from City of Portsmouth which is required to test for 1,1-dichloroethane. Sample information shown below was taken by City of Portsmouth.
1,1-Dichloroethane is used in industrial chemical synthesis; in plastics, paint, varnish and finish removers; and as a pesticide. It can cause cancer.
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 | 2 | 0 | ND |
| 2014 | ND | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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: City of Chesapeake - Western Branch System purchases water from City of Portsmouth which is required to test for 1,1-dichloroethane. Sample information shown below was taken by City of Portsmouth.
| Date | Lab ID | Result |
|---|---|---|
| 2013-01-11 | 201301170718AM | ND |
| 2013-04-09 | 201304110612AM | ND |
| 2013-07-08 | 201307090245AM | ND |
| 2013-10-01 | 201310030468AM | ND |
| 2018-04-16 | 3914796 | ND |