1,1-Dichloroethylene
Crazy Horse Ranch Water
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 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 1 | 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 |
---|---|---|
2014-03-25 | Q1409490001 | ND |
2014-06-09 | Q1419972001 | ND |
2015-02-16 | Q1506106001 | ND |
2015-05-28 | Q1519624002 | ND |
2016-02-10 | Q1605916002 | ND |
2016-05-24 | Q1620357002 | ND |
2017-03-13 | Q1710265001 | ND |
2018-02-20 | Q1807017002 | ND |
2018-08-20 | Q1833103003 | ND |
2019-02-14 | Q1906896003 | ND |