1,1-Dichloroethylene
Challis, City of
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
7
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 | N/A | 0 | 0 | N/A |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2016-08-30 | V1620511 | ND |
| 2016-08-30 | V1620551 | ND |
| 2016-08-30 | V1620601 | ND |
| 2016-08-30 | V1620641 | ND |
| 2017-06-06 | V1699311 | ND |
| 2017-09-19 | V1729091 | ND |
| 2017-12-19 | V1755951 | ND |