1,1-Dichloroethylene
Montgomery County Water Control and Improvement District 1
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
12
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 | 4 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-03-14 | AC47141 | ND |
| 2015-03-25 | AC86046 | ND |
| 2015-03-25 | AC86054 | ND |
| 2015-09-28 | AD08766 | ND |
| 2015-11-04 | AD12652 | ND |
| 2016-11-18 | AD58843 | ND |
| 2016-11-18 | AD58855 | ND |
| 2017-03-20 | AD75761 | ND |
| 2017-03-20 | AD75725 | ND |
| 2018-08-17 | AE37609 | ND |
| 2018-08-17 | AE37607 | ND |
| 2019-11-20 | AE89982 | ND |