1,1-Dichloroethylene
Berthoud, Town of
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 |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 1 | 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 | Result |
|---|---|
| 2014-05-15 | ND |
| 2015-05-12 | ND |
| 2016-03-09 | ND |
| 2016-03-29 | ND |
| 2016-05-12 | ND |
| 2017-04-20 | ND |
| 2017-05-02 | ND |
| 2017-07-12 | ND |
| 2018-06-01 | ND |
| 2019-01-22 | ND |