1,1-Dichloroethylene
Cheyenne Board Public Utilities
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
9
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 | 3 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-12-01 | 3147252 P | ND |
| 2014-12-02 | 3147252 V | ND |
| 2014-12-04 | 3149779 V | ND |
| 2015-11-10 | 3391298 V | ND |
| 2016-10-26 | 375713 V | ND |
| 2016-10-27 | 375817 V | ND |
| 2017-10-10 | 400164 V | ND |
| 2018-09-20 | 430447 V | ND |
| 2018-09-24 | 430689 V | ND |