trans-1,2-Dichloroethylene
Bell County Water Control and Improvement 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 |
---|---|---|---|---|
2014 | ND | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-07-23 | AC60718 | ND |
2014-07-23 | AC60712 | ND |
2014-07-23 | AC60716 | ND |
2015-09-02 | AD05425 | ND |
2015-09-02 | AD05429 | ND |
2015-09-02 | AD05431 | ND |
2016-07-19 | AD44753 | ND |
2016-07-19 | AD44755 | ND |
2016-07-19 | AD44757 | ND |
2017-09-08 | AD95274 | ND |
2017-09-08 | AD95272 | ND |
2017-09-08 | AD95270 | ND |
2018-09-12 | AE39812 | ND |
2018-09-12 | AE39810 | ND |
2018-09-12 | AE39814 | ND |
2019-08-15 | AE78978 | ND |
2019-08-15 | AE78976 | ND |