1,1-Dichloroethane
Harris County Fresh Water Supply District 1a
NOTE: Harris County Fresh Water Supply District 1a purchases water from Baytown Area Water Authority which is required to test for 1,1-dichloroethane. Sample information shown below was taken by Baytown Area Water Authority.
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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: Harris County Fresh Water Supply District 1a purchases water from Baytown Area Water Authority which is required to test for 1,1-dichloroethane. Sample information shown below was taken by Baytown Area Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-08-03 | AE35860 | ND |
| 2019-09-06 | AE82509 | ND |
| 2020-07-14 | AF19344 | ND |
| 2021-08-09 | AF65379 | ND |
| 2021-10-20 | AF74188 | ND |
| 2022-01-12 | AF80002 | ND |
| 2022-04-04 | AF91855 | ND |
| 2022-07-05 | AG03267 | ND |
| 2022-07-05 | AG03269 | ND |
| 2023-01-12 | AG24428 | ND |
| 2023-07-11 | AG47888 | ND |