cis-1,2-Dichloroethylene
Coraopolis Water & Sewer Authority
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.
13
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 | 3.60 ppb | 1 | 1 | 3.60 ppb |
| 2019 | 4.60 ppb | 1 | 1 | 4.60 ppb |
| 2020 | 2.67 ppb | 3 | 3 | 1.40 ppb - 3.70 ppb |
| 2021 | 3.35 ppb | 4 | 4 | 2.30 ppb - 4.50 ppb |
| 2022 | 5.03 ppb | 3 | 3 | 4.50 ppb - 6.00 ppb |
| 2023 | 4.60 ppb | 1 | 1 | 4.60 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 |
|---|---|---|
| 2018-05-14 | 8054022-01 | 3.60 ppb |
| 2019-05-30 | 9055519-01 | 4.60 ppb |
| 2020-04-07 | 22115697.00 | 3.70 ppb |
| 2020-05-19 | 22308730.00 | 2.90 ppb |
| 2020-10-19 | 23269383.00 | 1.40 ppb |
| 2021-06-28 | 24921589.00 | 2.30 ppb |
| 2021-10-01 | 25308349.00 | 4.10 ppb |
| 2021-10-01 | 25308368.00 | 2.50 ppb |
| 2021-12-22 | 25850468.00 | 4.50 ppb |
| 2022-03-01 | 26197359.00 | 4.60 ppb |
| 2022-05-24 | 26742038.00 | 6.00 ppb |
| 2022-09-16 | 27539232.00 | 4.50 ppb |
| 2023-06-05 | 29204038.00 | 4.60 ppb |