trans-1,2-Dichloroethylene
Henry County Water Authority
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 | 6 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 8 | 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 |
---|---|---|
2014-01-27 | 140127038-2 | ND |
2014-01-27 | 140127038-1 | ND |
2014-06-02 | 140603013-1 | ND |
2014-06-30 | 140701010-1 | ND |
2014-09-10 | 140911027-1 | ND |
2014-12-03 | 141203110-1 | ND |
2015-02-25 | 150226032-1 | ND |
2015-06-04 | 150605031-1 | ND |
2016-03-10 | 160311015-2 | ND |
2016-03-10 | 160311015-1 | ND |
2016-06-09 | 160610006-1 | ND |
2017-06-05 | 170606100-1 | ND |
2017-06-05 | 170606100-2 | ND |
2018-06-04 | 180605007-001 | ND |
2018-06-04 | 180605007-1 | ND |
2018-07-03 | 1807-00035-1V | ND |
2019-06-03 | 20106568003_IVOC | ND |
2019-06-03 | 20106568002_IVOC | ND |
2019-06-03 | 20106568001_IVOC | ND |
2019-06-03 | 20106568001_IVOC | ND |
2019-07-29 | 20114784001_IVOC | ND |
2019-07-29 | 20114784001_IVOC | ND |
2019-07-29 | 20114784001_IVOC | ND |
2019-10-17 | 20126577001_IVOC | ND |