cis-1,2-Dichloroethylene
Burr Oak
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.
11
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | 0.967 ppb | 6 | 5 | ND - 1.80 ppb |
| 2019 | 1.000 ppb | 5 | 5 | 0.700 ppb - 1.20 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 |
|---|---|---|
| 2018-03-08 | LLH69426 | 1.30 ppb |
| 2018-05-30 | LLH82924 | 1.80 ppb |
| 2018-08-27 | LLI01494 | ND |
| 2018-11-19 | LLI15978 | 1.60 ppb |
| 2018-11-19 | LLI15976 | 0.600 ppb |
| 2018-11-19 | LLI15977 | 0.500 ppb |
| 2019-03-07 | LLI28317 | 1.10 ppb |
| 2019-06-27 | LLI46828 | 0.800 ppb |
| 2019-07-24 | LLI52063 | 1.20 ppb |
| 2019-10-10 | LLI70511 | 1.20 ppb |
| 2019-12-27 | LLI86075 | 0.700 ppb |