1,1-Dichloroethylene
Knoxville Water Department
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
8
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 | 1 | 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 | Lab ID | Result |
|---|---|---|
| 2014-03-13 | 14031964-010 | ND |
| 2015-12-14 | 13656279 | ND |
| 2016-05-03 | 14279521 | ND |
| 2016-07-12 | 14600869 | ND |
| 2016-12-13 | 15399375 | ND |
| 2017-02-14 | 15680735 | ND |
| 2018-09-11 | 1824375-01 | ND |
| 2019-05-14 | 7090194001 | ND |