trans-1,2-Dichloroethylene
Upper Hanover 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.
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 | 4 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 6 | 0 | ND |
2019 | ND | 5 | 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 |
---|---|---|
2014-03-12 | 140010201 | ND |
2014-03-12 | 140010202 | ND |
2014-03-12 | 140010203 | ND |
2014-03-12 | 140010200 | ND |
2015-02-18 | 12402287 | ND |
2015-02-18 | 12402308 | ND |
2015-03-04 | 12516097 | ND |
2016-02-03 | 13753534 | ND |
2016-02-03 | 13753492 | ND |
2016-02-03 | 13753513 | ND |
2017-09-26 | 16727616 | ND |
2017-09-26 | 16727615 | ND |
2017-09-26 | 16727614 | ND |
2017-09-26 | 16727613 | ND |
2017-11-22 | 17024145 | ND |
2018-01-30 | 8001978-01 | ND |
2018-04-25 | 8008140-01 | ND |
2018-07-17 | 8017906-01 | ND |
2018-07-25 | 8019752-01 | ND |
2018-07-25 | 8019752-02 | ND |
2018-10-10 | 8028641-01 | ND |
2019-01-23 | 8038660-01 | ND |
2019-05-07 | 9009685-01 | ND |
2019-08-21 | 8038658-01 | ND |
2019-09-24 | 9034252-01 | ND |
2019-12-11 | 9033962-01 | ND |