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.
8
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 | 0.976 ppb | 1 | 1 | 0.976 ppb |
| 2015 | 0.324 ppb | 2 | 1 | ND - 0.648 ppb |
| 2016 | 2.05 ppb | 2 | 2 | 1.30 ppb - 2.80 ppb |
| 2017 | 1.60 ppb | 1 | 1 | 1.60 ppb |
| 2018 | 3.60 ppb | 1 | 1 | 3.60 ppb |
| 2019 | 4.60 ppb | 1 | 1 | 4.60 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 |
|---|---|---|
| 2014-05-27 | 14060076-001 | 0.976 ppb |
| 2015-04-08 | 12691381 | 0.648 ppb |
| 2015-08-24 | 13197127 | ND |
| 2016-06-13 | 14486012 | 2.80 ppb |
| 2016-12-19 | 15441868 | 1.30 ppb |
| 2017-05-08 | 16173486 | 1.60 ppb |
| 2018-05-14 | 8054022-01 | 3.60 ppb |
| 2019-05-30 | 9055519-01 | 4.60 ppb |