trans-1,2-Dichloroethylene
City of Hanford
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | N/A | 0 | 0 | N/A |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 13 | 0 | ND |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 11 | 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 |
---|---|---|
2016-03-08 | 5810-043-1330 | ND |
2016-03-08 | 5810-033-0945 | ND |
2016-03-08 | 5810-042-1300 | ND |
2016-03-08 | 5810-036-1040 | ND |
2016-03-08 | 5810-037-1100 | ND |
2016-03-08 | 5810-038-1000 | ND |
2016-03-08 | 5810-039-0905 | ND |
2016-03-09 | 5810-028-1300 | ND |
2016-03-09 | 5810-031-1025 | ND |
2016-03-09 | 5810-041-0935 | ND |
2016-03-09 | 5810-040-1125 | ND |
2016-03-10 | 5810-026-1300 | ND |
2016-03-29 | 5810-034-0740 | ND |
2019-03-13 | 5810-043-0830 | ND |
2019-03-13 | 5810-042-1125 | ND |
2019-03-13 | 5810-033-1040 | ND |
2019-03-13 | 5810-031-1210 | ND |
2019-03-14 | 5810-037-1110 | ND |
2019-03-14 | 5810-040-0840 | ND |
2019-03-14 | 5810-036-1140 | ND |
2019-03-14 | 5810-041-0915 | ND |
2019-03-14 | 5810-034-1040 | ND |
2019-03-14 | 5810-028-1005 | ND |
2019-05-09 | 5810-039-1100 | ND |