trans-1,2-Dichloroethylene
New Orleans Carrollton Waterworks
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 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 | AD88197 | ND |
| 2014-01-06 | AD88196 | ND |
| 2014-01-06 | AD88197 | ND |
| 2014-01-06 | AD88196 | ND |
| 2014-03-13 | AD89682 | ND |
| 2014-03-13 | AD89682 | ND |
| 2014-03-13 | AD89683 | ND |
| 2014-03-13 | AD89683 | ND |
| 2014-09-11 | AD96628 | ND |
| 2014-09-11 | AD96629 | ND |
| 2014-09-11 | AD96629 | ND |
| 2014-09-11 | AD96628 | ND |
| 2015-02-23 | 35177313001 | ND |
| 2015-02-23 | 35177313002 | ND |
| 2015-02-23 | 35177313001 | ND |
| 2015-02-23 | 35177313002 | ND |
| 2016-01-20 | 35226299002 | ND |
| 2016-01-20 | 35226299001 | ND |
| 2016-01-20 | 35226299002 | ND |
| 2016-01-20 | 35226299001 | ND |
| 2017-02-09 | 35294515001 | ND |
| 2017-02-09 | 35294515002 | ND |
| 2017-02-09 | 35294515001 | ND |
| 2017-02-09 | 35294515002 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391002 | ND |
| 2018-03-15 | 35380391001 | ND |
| 2018-03-15 | 35380391002 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-02-27 | 35451097001 | ND |
| 2019-02-27 | 35451098001 | ND |
| 2019-09-05 | 35495386001 | ND |
| 2019-09-05 | 35495386003 | ND |
| 2019-09-05 | 35495386002 | ND |
| 2019-09-05 | 35495386001 | ND |
| 2019-09-05 | 35495386003 | ND |
| 2019-09-05 | 35495386002 | ND |
| 2019-09-19 | 35499418001 | ND |
| 2019-09-19 | 35499418001 | ND |