1,1-Dichloroethylene
City of Chesapeake - Northwest River System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
13
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-01-27 | 14*01148-VOC | ND |
| 2014-12-09 | E140800085 | ND |
| 2015-04-06 | VA010-DCLS | ND |
| 2015-08-18 | VA010-DCLS | ND |
| 2015-10-28 | VA010-DCLS | ND |
| 2016-04-18 | E160302045 | ND |
| 2016-11-15 | E161000243 | ND |
| 2017-04-25 | E170307529 | ND |
| 2017-11-13 | E170906613 | ND |
| 2018-06-12 | E180602859 | ND |
| 2018-11-05 | E181000457 | ND |
| 2019-05-13 | E190307955 | ND |
| 2019-11-05 | E191004164 | ND |