trans-1,2-Dichloroethylene
Sidney City PWS
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 | 4 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-01-02 | 14A0163-01 | ND |
| 2014-04-03 | A140190752 | ND |
| 2014-07-02 | A140191637 | ND |
| 2014-10-02 | A140217226 | ND |
| 2015-01-07 | A150231621 | ND |
| 2015-04-01 | 15D0323-01 | ND |
| 2015-07-06 | 15G0303-01 | ND |
| 2015-10-05 | 15J0265-01 | ND |
| 2016-01-04 | 16A0267-01 | ND |
| 2016-04-28 | A160374931 | ND |
| 2016-07-07 | A160399328 | ND |
| 2016-10-06 | A160447210 | ND |
| 2017-04-06 | A170476967 | ND |
| 2017-07-14 | A170504519 | ND |
| 2017-10-05 | A170476968 | ND |
| 2018-01-04 | A180539902 | ND |
| 2018-04-05 | A180587503 | ND |
| 2018-07-05 | A180605954 | ND |
| 2018-10-04 | A180632248 | ND |
| 2019-01-03 | 9A00711-01 | ND |
| 2019-04-04 | 9D00815-01 | ND |
| 2019-07-03 | 9G00880-05 | ND |
| 2019-10-03 | 9J00933-01 | ND |