cis-1,2-Dichloroethylene
Clear Lake City Water 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | ND | 4 | 0 | ND |
2016 | ND | 4 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 3 | 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
Date | Lab ID | Result |
---|---|---|
2014-02-26 | AC44797 | ND |
2015-01-20 | AC76766 | ND |
2015-01-20 | AC76760 | ND |
2015-01-20 | AC76770 | ND |
2015-01-20 | AC76758 | ND |
2016-01-19 | AD18636 | ND |
2016-01-19 | AD18634 | ND |
2016-06-20 | AD41195 | ND |
2016-06-20 | AD41193 | ND |
2017-01-19 | AD65733 | ND |
2017-03-08 | AD74031 | ND |
2017-03-08 | AD74033 | ND |
2017-03-08 | AD74035 | ND |
2017-10-25 | AE02122 | ND |
2018-02-20 | AE14467 | ND |
2018-03-12 | AE17898 | ND |
2018-04-24 | AE23717 | ND |
2019-02-27 | AE56261 | ND |
2019-02-27 | AE56279 | ND |
2019-02-27 | AE56283 | ND |