trans-1,2-Dichloroethylene
Pulaski County Public Water Supply District 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.
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 | 4 | 0 | ND |
| 2015 | ND | 8 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 9 | 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 |
|---|---|---|
| 2014-01-28 | AC17574 | ND |
| 2014-04-22 | AC22448 | ND |
| 2014-07-22 | AC30018 | ND |
| 2014-10-29 | AC37270 | ND |
| 2015-01-30 | AC41321 | ND |
| 2015-02-25 | AC42839 | ND |
| 2015-02-25 | AC42840 | ND |
| 2015-02-25 | AC42841 | ND |
| 2015-02-25 | AC42842 | ND |
| 2015-04-29 | AC45658 | ND |
| 2015-07-31 | AC55317 | ND |
| 2015-10-28 | AC61939 | ND |
| 2016-02-01 | AC65706 | ND |
| 2016-04-28 | AC69995 | ND |
| 2016-08-03 | AC80697 | ND |
| 2016-10-27 | AC85944 | ND |
| 2017-01-23 | AC89784 | ND |
| 2017-04-25 | AC95063 | ND |
| 2017-07-18 | AD02376 | ND |
| 2017-10-23 | AD08577 | ND |
| 2018-01-10 | AD12046 | ND |
| 2018-03-05 | AD17401 | ND |
| 2018-05-03 | AD18576 | ND |
| 2018-06-04 | AD19098 | ND |
| 2018-06-04 | AD19099 | ND |
| 2018-06-04 | AD19100 | ND |
| 2018-06-04 | AD19101 | ND |
| 2018-07-11 | AD29485 | ND |
| 2018-10-12 | AD35058 | ND |
| 2019-01-08 | AD38366 | ND |
| 2019-04-08 | AD46655 | ND |
| 2019-07-12 | AD52707 | ND |
| 2019-10-18 | AD57365 | ND |