trans-1,2-Dichloroethylene
Los Angeles CWWD 40, R24, 27,33-Pearblsm
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 | 5 | 0 | ND |
2015 | ND | 5 | 0 | ND |
2016 | ND | 5 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 4 | 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 |
---|---|---|
2014-05-07 | 5442-020-0958 | ND |
2014-05-07 | 5442-019-0941 | ND |
2014-05-07 | 5442-014-1013 | ND |
2014-05-07 | 5442-005-0929 | ND |
2014-08-06 | 5442-002-1028 | ND |
2015-05-12 | 5442-019-0909 | ND |
2015-05-12 | 5442-020-1030 | ND |
2015-05-12 | 5442-002-1052 | ND |
2015-05-12 | 5442-014-0909 | ND |
2015-05-12 | 5442-005-0931 | ND |
2016-05-18 | 5442-014-1020 | ND |
2016-05-18 | 5442-019-1145 | ND |
2016-05-18 | 5442-005-1115 | ND |
2016-05-18 | 5442-002-1010 | ND |
2016-08-31 | 5442-020-1100 | ND |
2019-01-08 | 9590-014-1130 | ND |
2019-01-08 | 9590-002-1113 | ND |
2019-08-19 | 9590-020-1002 | ND |
2019-12-11 | 9590-005-0859 | ND |