trans-1,2-Dichloroethylene
Riverland Terrace Nonprofit Water Corporation
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 | N/A | 0 | 0 | N/A |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 2 | 0 | ND |
2018 | ND | 5 | 0 | ND |
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 |
---|---|---|
2017-06-30 | VE170600341-001 | ND |
2017-12-12 | V1757701 | ND |
2018-03-21 | V1812049 | ND |
2018-06-28 | VE180600271-001 | ND |
2018-09-26 | VE180900242-001 | ND |
2018-12-21 | VE181200215-001 | ND |
2018-12-21 | V1862524 | ND |
2019-03-29 | VE190300400-001 | ND |
2019-06-27 | VE190600369-001 | ND |
2019-09-25 | VE190900258-001 | ND |
2019-12-24 | VE191200231-002 | ND |