1,1-Dichloroethylene
Harris County Water Control and Improvement District 116
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
8
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-22 | AC39821 | ND |
| 2015-02-23 | AC81459 | ND |
| 2015-09-21 | AD07808 | ND |
| 2015-12-11 | AD16817 | ND |
| 2016-02-22 | AD24423 | ND |
| 2017-01-30 | AD67561 | ND |
| 2018-04-09 | AE21700 | ND |
| 2019-12-13 | AE92435 | ND |