cis-1,2-Dichloroethylene
Chandler Terrace
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.600 ppb | 1 | 1 | 0.600 ppb |
2015 | 1.000 ppb | 1 | 1 | 1.000 ppb |
2016 | ND | 1 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 1 | 0 | ND |
2019 | 0.500 ppb | 1 | 1 | 0.500 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 |
---|---|---|
2014-01-23 | 3401-1136 | 0.600 ppb |
2015-01-23 | 3501-1344 | 1.000 ppb |
2016-01-25 | 3601-1604-1 | ND |
2017-01-19 | 1701-01556-001 | ND |
2018-01-15 | 1801-01119-001 | ND |
2019-01-07 | 1901-00443-001 | 0.500 ppb |