1,1-Dichloroethylene
Northwest Harris County MUD 5
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
19
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 | 3 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-10-14 | AC69599 | ND |
| 2015-07-28 | AD01247 | ND |
| 2015-07-28 | AD01279 | ND |
| 2015-07-28 | AD01287 | ND |
| 2016-11-09 | AD57442 | ND |
| 2016-11-09 | AD57450 | ND |
| 2016-11-09 | AD57448 | ND |
| 2017-08-08 | AD92417 | ND |
| 2017-09-26 | AD98059 | ND |
| 2017-09-26 | AD98065 | ND |
| 2017-09-26 | AD98063 | ND |
| 2018-02-07 | AE12763 | ND |
| 2018-05-10 | AE25945 | ND |
| 2018-05-10 | AE25951 | ND |
| 2018-05-10 | AE25947 | ND |
| 2019-02-05 | AE52907 | ND |
| 2019-03-26 | AE59980 | ND |
| 2019-03-26 | AE59970 | ND |
| 2019-03-26 | AE59964 | ND |