trans-1,2-Dichloroethylene
Fort Bend County WCID 2
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 | ND | 2 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 5 | 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 |
---|---|---|
2014-02-04 | AC41259 | ND |
2014-02-04 | AC41261 | ND |
2015-02-04 | AC79269 | ND |
2015-02-04 | AC79287 | ND |
2015-02-04 | AC79285 | ND |
2015-02-04 | AC79255 | ND |
2016-01-27 | AD20429 | ND |
2016-01-27 | AD20425 | ND |
2016-01-27 | AD20449 | ND |
2016-01-27 | AD20447 | ND |
2017-01-05 | AD63223 | ND |
2017-01-05 | AD63249 | ND |
2017-01-05 | AD63217 | ND |
2017-01-05 | AD63255 | ND |
2017-01-05 | AD63227 | ND |
2018-01-09 | AE08371 | ND |
2018-01-09 | AE08361 | ND |
2018-01-09 | AE08397 | ND |
2018-01-09 | AE08385 | ND |
2019-01-25 | AE51622 | ND |
2019-04-11 | AE62090 | ND |
2019-04-11 | AE62086 | ND |
2019-07-19 | AE75352 | ND |