cis-1,2-Dichloroethylene
Willowbrook Development
NOTE: Willowbrook Development purchases water from Johnston County - West which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Johnston County - West.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
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
NOTE: Willowbrook Development purchases water from Johnston County - West which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by Johnston County - West.
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-07 | 8545-010714-EP1V | ND |
| 2015-01-13 | ND | |
| 2016-01-12 | 8545-011216-EP1V | ND |
| 2017-01-17 | 8545-011717-EP1V | ND |
| 2018-01-23 | 8545-012318-EP1V | ND |
| 2019-01-22 | 8545-012219-EP1V | ND |