trans-1,2-Dichloroethylene
West Lebanon Township Water Supply
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 | 9 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 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 |
|---|---|---|
| 2014-03-14 | 1076320003 | ND |
| 2014-03-14 | 1076320001 | ND |
| 2014-04-30 | 2004290003 | ND |
| 2014-04-30 | 2004290001 | ND |
| 2014-07-30 | 2020672003 | ND |
| 2014-07-30 | 2020672001 | ND |
| 2014-10-22 | 2035907001 | ND |
| 2014-10-22 | 2035907002 | ND |
| 2014-10-22 | 2035907003 | ND |
| 2015-01-20 | 12379801 | ND |
| 2015-01-20 | 12379777 | ND |
| 2015-04-21 | 12727578 | ND |
| 2015-04-21 | 12727554 | ND |
| 2015-07-14 | 13113641 | ND |
| 2015-07-14 | 13113617 | ND |
| 2015-10-20 | 13489308 | ND |
| 2015-10-20 | 13489332 | ND |
| 2016-01-20 | 13848647 | ND |
| 2016-04-19 | 14223933 | ND |
| 2016-04-19 | 14223957 | ND |
| 2016-07-13 | 14707367 | ND |
| 2016-10-18 | 15201381 | ND |
| 2016-10-18 | 15201357 | ND |
| 2017-01-18 | 15631133 | ND |
| 2017-01-18 | 15631089 | ND |
| 2017-04-21 | 16065409 | ND |
| 2017-04-21 | 16065385 | ND |
| 2017-07-14 | 16537936 | ND |
| 2017-10-19 | 16999193 | ND |
| 2018-01-17 | 2289343001 | ND |
| 2018-06-25 | 1816401-01 | ND |
| 2018-06-25 | 1816401-03 | ND |
| 2018-10-17 | 2345067001 | ND |
| 2019-01-16 | 3011129001 | ND |
| 2019-04-17 | 3028813001 | ND |
| 2019-07-24 | 3047708001 | ND |
| 2019-10-16 | 3064467001 | ND |