cis-1,2-Dichloroethylene
Mars Borough Water Works
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.
6
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 | 2.50 ppb | 1 | 1 | 2.50 ppb |
| 2015 | 2.20 ppb | 1 | 1 | 2.20 ppb |
| 2016 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2017 | 2.20 ppb | 1 | 1 | 2.20 ppb |
| 2018 | 2.30 ppb | 1 | 1 | 2.30 ppb |
| 2019 | 2.56 ppb | 1 | 1 | 2.56 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 |
|---|---|---|
| 2014-08-05 | 14080920-001 | 2.50 ppb |
| 2015-08-05 | 13202686 | 2.20 ppb |
| 2016-11-14 | 15303506 | 3.00 ppb |
| 2017-09-25 | 16809756 | 2.20 ppb |
| 2018-07-17 | 18G1584-01 | 2.30 ppb |
| 2019-08-16 | 19H2178-01 | 2.56 ppb |