1,1-Dichloroethylene
Chowan County Water System
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 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 |
---|---|---|
2014-10-22 | 8045-102214-E01V | ND |
2015-10-14 | ND | |
2016-10-05 | 8045-100516-E01V | ND |
2017-10-18 | 8045-101817-E01V | ND |
2018-09-19 | 8045-091918-E01V | ND |
2018-10-24 | 8045-102418-E01V | ND |
2019-01-16 | 8045-011619-E01V | ND |
2019-05-01 | 8045-050119-E01V | ND |
2019-07-10 | 8045-071019-E01V | ND |
2019-10-30 | 8045-103019-E01V | ND |