1,1-Dichloroethylene
Rockhouse Mountain
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2015-12-15 | 1512-01323-001 | ND |
| 2016-03-16 | 153931.01 | ND |
| 2016-04-13 | 154811.01 | ND |
| 2016-09-23 | 160858.01 | ND |
| 2016-11-30 | 163370.01 | ND |
| 2017-12-27 | 177414.01 | ND |
| 2018-12-18 | 1812-01973-001 | ND |
| 2018-12-27 | 1812-02385-001 | ND |
| 2019-09-24 | 1909-03140-001 | ND |
| 2019-09-24 | 1909-03143-001 | ND |
| 2019-12-16 | 1912-01493-001 | ND |
| 2019-12-16 | 1912-01498-001 | ND |