1,1-Dichloroethylene
Harris County Municipal Utility District 109
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
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 |
---|---|---|
2015-07-06 | AC98447 | ND |
2015-07-06 | AC98429 | ND |
2016-03-09 | AD27927 | ND |
2016-12-05 | AD60385 | ND |
2017-01-06 | AD63631 | ND |
2017-04-21 | AD80689 | ND |
2018-01-31 | AE11597 | ND |
2018-01-31 | AE11595 | ND |
2019-02-14 | AE54626 | ND |
2019-11-22 | AE90390 | ND |