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.
12
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 |
|---|---|---|---|---|
| 2018 | 2.30 ppb | 1 | 1 | 2.30 ppb |
| 2019 | 2.56 ppb | 1 | 1 | 2.56 ppb |
| 2020 | 2.18 ppb | 1 | 1 | 2.18 ppb |
| 2021 | 2.54 ppb | 3 | 3 | 2.23 ppb - 2.80 ppb |
| 2022 | 1.19 ppb | 3 | 2 | ND - 1.92 ppb |
| 2023 | 2.25 ppb | 3 | 3 | 1.76 ppb - 2.64 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-07-17 | 18G1584-01 | 2.30 ppb |
| 2019-08-16 | 19H2178-01 | 2.56 ppb |
| 2020-11-13 | 23454843.00 | 2.18 ppb |
| 2021-12-06 | 25861423.00 | 2.23 ppb |
| 2021-12-06 | 25861444.00 | 2.59 ppb |
| 2021-12-07 | 25861465.00 | 2.80 ppb |
| 2022-05-13 | 26754581.00 | 1.66 ppb |
| 2022-08-04 | 27346600.00 | 1.92 ppb |
| 2022-08-04 | 27346621.00 | ND |
| 2023-05-09 | 29011438.00 | 2.35 ppb |
| 2023-06-05 | 29214291.00 | 1.76 ppb |
| 2023-09-06 | 29801308.00 | 2.64 ppb |