trans-1,2-Dichloroethylene
City of Livingston
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-09-02 | 5810-025-1155 | ND |
| 2015-02-10 | 5810-008-0919 | ND |
| 2015-09-08 | 5810-013-1230 | ND |
| 2015-09-08 | 5810-012-1255 | ND |
| 2015-11-09 | 5810-014-1430 | ND |
| 2015-11-09 | 5810-015-1135 | ND |
| 2015-11-09 | 5810-011-1155 | ND |
| 2015-11-09 | 5810-009-1215 | ND |
| 2017-05-09 | 5810-028-1000 | ND |
| 2017-09-12 | 5810-025-0910 | ND |
| 2018-02-12 | 5810-008-1340 | ND |
| 2018-05-14 | 5810-028-1040 | ND |
| 2018-09-10 | 5810-012-1205 | ND |
| 2018-09-10 | 5810-013-1120 | ND |
| 2018-11-09 | 5810-011-1428 | ND |
| 2018-11-09 | 5810-009-1402 | ND |
| 2018-11-09 | 5810-014-1216 | ND |
| 2018-11-09 | 5810-028-1508 | ND |
| 2019-02-26 | 5810-015-1321 | ND |
| 2019-11-26 | 5810-028-0915 | ND |