1,1-Dichloroethylene
Topaz Lake Water Company Inc.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
21
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 | 4 | 0 | ND |
| 2015 | 0.240 ppb | 3 | 1 | ND - 0.720 ppb |
| 2016 | ND | 2 | 0 | ND |
| 2017 | 0.393 ppb | 4 | 2 | ND - 0.920 ppb |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-01-16 | 1401353-01 | ND |
| 2014-04-17 | A4D1784-01 | ND |
| 2014-09-22 | A4I2309-01 | ND |
| 2014-11-03 | A4K0438-01 | ND |
| 2015-01-20 | 1501729-01 | 0.720 ppb |
| 2015-04-27 | A5D2518-01 | ND |
| 2015-09-29 | A5J0052-01 | ND |
| 2016-03-25 | 1608990-01 | ND |
| 2016-04-13 | A6D1566-01 | ND |
| 2017-01-26 | A7A2723-01 | 0.650 ppb |
| 2017-04-25 | A7D2594-01 | ND |
| 2017-07-25 | A7G2768-01 | ND |
| 2017-11-13 | A7K1593-01 | 0.920 ppb |
| 2018-03-19 | A8C3101-01 | ND |
| 2018-05-15 | 18050824-01A | ND |
| 2018-07-20 | A8G3158-01 | ND |
| 2018-11-13 | A8K1915-01 | ND |
| 2019-01-28 | A9A3651-01 | ND |
| 2019-05-17 | A9E2697-01 | ND |
| 2019-07-18 | A9G3232-01 | ND |
| 2019-10-31 | A9K0025-01 | ND |