cis-1,2-Dichloroethylene
Jefferson Water Department
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.
7
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.29 ppb | 1 | 1 | 1.29 ppb |
| 2015 | 2.14 ppb | 1 | 1 | 2.14 ppb |
| 2016 | 1.43 ppb | 1 | 1 | 1.43 ppb |
| 2017 | 1.31 ppb | 1 | 1 | 1.31 ppb |
| 2018 | 1.55 ppb | 2 | 2 | 1.47 ppb - 1.63 ppb |
| 2019 | 0.690 ppb | 1 | 1 | 0.690 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for cis-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 |
|---|---|---|
| 2014-10-15 | 2087600 | 1.29 ppb |
| 2015-12-21 | 1L51592-01 | 2.14 ppb |
| 2016-11-30 | 1L60047-01 | 1.43 ppb |
| 2017-12-04 | 1L70286-01 | 1.31 ppb |
| 2018-04-02 | 1D80162-01 | 1.63 ppb |
| 2018-10-09 | 1J80834-01 | 1.47 ppb |
| 2019-10-01 | 1J90156-02 | 0.690 ppb |