1,1-Dichloroethylene
City of Hallsville
NOTE: City of Hallsville purchases water from City of Longview which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by City of Longview.
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 |
---|---|---|---|---|
2014 | ND | 3 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 1 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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
NOTE: City of Hallsville purchases water from City of Longview which is required to test for 1,1-dichloroethylene. Sample information shown below was taken by City of Longview.
Date | Lab ID | Result |
---|---|---|
2014-08-01 | Q1433243014 | ND |
2014-08-01 | Q1433243011 | ND |
2014-08-01 | Q1433243009 | ND |
2015-09-18 | Q1536731004 | ND |
2015-09-18 | Q1536731006 | ND |
2015-09-18 | Q1536731002 | ND |
2016-09-02 | Q1635387001 | ND |
2016-09-02 | Q1635387006 | ND |
2016-09-02 | Q1635387004 | ND |
2017-08-18 | Q1737139010 | ND |
2017-08-18 | Q1737139007 | ND |
2017-08-18 | Q1737139002 | ND |
2018-08-21 | Q1833337013 | ND |
2018-08-21 | Q1833337003 | ND |
2018-08-21 | Q1833337012 | ND |
2019-08-08 | Q1952474001 | ND |
2019-08-08 | Q1952474005 | ND |
2019-08-08 | Q1952474003 | ND |