cis-1,2-Dichloroethylene
Hickory Hollow Water Service Inc.
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.
0
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 | ND | 5 | 0 | ND |
| 2015 | 0.200 ppb | 6 | 2 | ND - 0.700 ppb |
| 2016 | 0.367 ppb | 6 | 3 | ND - 0.900 ppb |
| 2017 | 0.140 ppb | 5 | 1 | ND - 0.700 ppb |
| 2018 | 0.458 ppb | 12 | 6 | ND - 1.40 ppb |
| 2019 | 0.300 ppb | 7 | 3 | ND - 0.800 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 |
|---|