1,1-Dichloroethane
Johnston Municipal Water Supply
NOTE: Johnston Municipal Water Supply purchases water from Des Moines Water Works which is required to test for 1,1-dichloroethane. Sample information shown below was taken by Des Moines Water Works.
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 |
|---|---|---|---|---|
| 2014 | ND | 6 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 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: Johnston Municipal Water Supply purchases water from Des Moines Water Works which is required to test for 1,1-dichloroethane. Sample information shown below was taken by Des Moines Water Works.
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-30 | 180955 | ND |
| 2014-07-30 | 180953 | ND |
| 2014-07-30 | 180959 | ND |
| 2014-10-08 | 196216 | ND |
| 2014-10-08 | 196222 | ND |
| 2014-10-08 | 196219 | ND |
| 2015-01-26 | 211478 | ND |
| 2015-01-26 | 211497 | ND |
| 2015-01-26 | 211477 | ND |
| 2015-04-01 | 226530 | ND |
| 2015-04-01 | 226435 | ND |
| 2015-04-01 | 226431 | ND |