trans-1,2-Dichloroethylene
Whitehall Twp Authority
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 |
---|---|---|---|---|
2014 | 0.715 ppb | 13 | 4 | ND - 2.50 ppb |
2015 | 1.73 ppb | 6 | 4 | ND - 2.70 ppb |
2016 | 1.55 ppb | 6 | 4 | ND - 2.90 ppb |
2017 | 1.11 ppb | 9 | 4 | ND - 2.80 ppb |
2018 | ND | 2 | 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 |
---|---|---|
2014-02-11 | 14011560-06 | 2.30 ppb |
2014-02-11 | 14011560-01 | ND |
2014-02-11 | 14011560-02 | ND |
2014-02-11 | 14011560-03 | ND |
2014-02-11 | 14011560-04 | ND |
2014-02-11 | 14011560-05 | ND |
2014-02-11 | 14011560-07 | ND |
2014-05-06 | 14041101-01 | 2.10 ppb |
2014-05-06 | 14041101-02 | ND |
2014-08-12 | 14073702-01 | 2.40 ppb |
2014-08-12 | 14073702-02 | ND |
2014-11-04 | 14100715-02 | ND |
2014-11-04 | 14100715-01 | 2.50 ppb |
2015-02-05 | 12436947 | ND |
2015-02-05 | 12436968 | ND |
2015-02-05 | 12436905 | 2.70 ppb |
2015-05-05 | 12790912 | 2.70 ppb |
2015-08-18 | 13173182 | 2.40 ppb |
2015-11-04 | 13427359 | 2.60 ppb |
2016-02-04 | 13905673 | ND |
2016-02-04 | 13905652 | ND |
2016-02-04 | 13905610 | 2.20 ppb |
2016-05-03 | 14149481 | 1.70 ppb |
2016-08-02 | 14787689 | 2.90 ppb |
2016-11-08 | 15269538 | 2.50 ppb |
2017-02-07 | 15697019 | 2.80 ppb |
2017-02-07 | 15697061 | ND |
2017-02-07 | 15697082 | ND |
2017-02-07 | 15697103 | ND |
2017-02-07 | 15697124 | ND |
2017-02-07 | 15697145 | ND |
2017-05-02 | 16144963 | 2.60 ppb |
2017-09-05 | 16774045 | 2.13 ppb |
2017-11-07 | 17064738 | 2.46 ppb |
2018-02-13 | 8013120-01 | ND |
2018-02-13 | 8013121-01 | ND |
2019-02-05 | 9012092-01 | ND |
2019-02-05 | 9012093-01 | ND |