1,1-Dichloroethylene
Harris County MUD 55 Heritage Park
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
10
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2015-01-16 | AC76642 | ND |
| 2015-01-16 | AC76640 | ND |
| 2016-02-10 | AD23096 | ND |
| 2016-06-20 | AD41191 | ND |
| 2017-01-25 | AD66804 | ND |
| 2017-05-24 | AD85492 | ND |
| 2018-01-23 | AE09856 | ND |
| 2018-01-23 | AE09858 | ND |
| 2019-02-26 | AE56014 | ND |
| 2019-02-26 | AE56012 | ND |