trans-1,2-Dichloroethylene
St. Simons Island
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 | 1 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 1 | 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 |
|---|---|---|
| 2014-03-19 | AI36322 | ND |
| 2015-03-04 | AI68446 | ND |
| 2015-03-04 | AI68447 | ND |
| 2015-03-04 | AI68448 | ND |
| 2015-03-04 | AI68449 | ND |
| 2015-10-21 | AI99631 | ND |
| 2016-01-13 | AJ04258 | ND |
| 2016-04-20 | AJ10591 | ND |
| 2016-07-20 | AJ18709 | ND |
| 2017-05-23 | AJ55964 | ND |
| 2017-05-23 | AJ55965 | ND |
| 2018-02-27 | AJ84622 | ND |
| 2018-02-27 | AJ84623 | ND |
| 2018-02-27 | AJ84624 | ND |
| 2019-05-06 | AK16391 | ND |