trans-1,2-Dichloroethylene
East Jefferson Waterworks District 1
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 12 | 0 | ND |
2015 | ND | 6 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 6 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 12 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-06 | AD88200 | ND |
2014-01-06 | AD88198 | ND |
2014-01-06 | AD88200 | ND |
2014-01-06 | AD88199 | ND |
2014-01-06 | AD88198 | ND |
2014-01-06 | AD88199 | ND |
2014-03-13 | AD89684 | ND |
2014-03-13 | AD89685 | ND |
2014-03-13 | AD89686 | ND |
2014-03-13 | AD89686 | ND |
2014-03-13 | AD89685 | ND |
2014-03-13 | AD89684 | ND |
2015-02-23 | 35177313005 | ND |
2015-02-23 | 35177313003 | ND |
2015-02-23 | 35177313004 | ND |
2015-02-23 | 35177313005 | ND |
2015-02-23 | 35177313004 | ND |
2015-02-23 | 35177313003 | ND |
2016-01-20 | 35226299004 | ND |
2016-01-20 | 35226299003 | ND |
2016-01-20 | 35226299004 | ND |
2016-01-20 | 35226299005 | ND |
2016-01-20 | 35226299005 | ND |
2016-01-20 | 35226299003 | ND |
2017-02-09 | 35294515003 | ND |
2017-02-09 | 35294515004 | ND |
2017-02-09 | 35294515005 | ND |
2017-02-09 | 35294515005 | ND |
2017-02-09 | 35294515004 | ND |
2017-02-09 | 35294515003 | ND |
2018-03-15 | 35380393001 | ND |
2018-03-15 | 35380393003 | ND |
2018-03-15 | 35380393002 | ND |
2018-03-15 | 35380393001 | ND |
2018-03-15 | 35380393003 | ND |
2018-03-15 | 35380393002 | ND |
2019-02-27 | 35451094001 | ND |
2019-02-27 | 35451093001 | ND |
2019-02-27 | 35451088001 | ND |
2019-02-27 | 35451088001 | ND |
2019-02-27 | 35451093001 | ND |
2019-02-27 | 35451094001 | ND |
2019-09-05 | 35495383001 | ND |
2019-09-05 | 35495383003 | ND |
2019-09-05 | 35495383002 | ND |
2019-09-05 | 35495383001 | ND |
2019-09-05 | 35495383003 | ND |
2019-09-05 | 35495383002 | ND |