1,1-Dichloroethylene
Washington Aqueduct Division.
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
15
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 | 2 | 0 | ND |
| 2016 | ND | 7 | 0 | ND |
| 2017 | ND | 6 | 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 |
|---|---|---|
| 2015-10-14 | 12344 | ND |
| 2015-10-14 | 12345 | ND |
| 2016-01-13 | 201601-J | ND |
| 2016-04-13 | 201604-18 | ND |
| 2016-04-13 | 201604-J | ND |
| 2016-07-13 | 201607-18 | ND |
| 2016-07-13 | 201607-J | ND |
| 2016-10-12 | 201610-18 | ND |
| 2016-10-12 | 201610-J | ND |
| 2017-01-11 | 201701-18 | ND |
| 2017-01-11 | 201701-J | ND |
| 2017-04-12 | 201704-18 | ND |
| 2017-04-12 | 201704-J | ND |
| 2017-07-12 | 201707-18 | ND |
| 2017-07-12 | 201707-J | ND |