cis-1,2-Dichloroethylene
City of Plaquemine Water System
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 | 0.198 ppb | 8 | 2 | ND - 0.790 ppb |
2015 | N/A | 0 | 0 | N/A |
2016 | 0.542 ppb | 10 | 6 | ND - 1.40 ppb |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | 0.146 ppb | 10 | 4 | ND - 0.380 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 |
---|---|---|
2014-05-19 | AD91670 | ND |
2014-05-19 | AD91670 | ND |
2014-05-21 | AD91672 | ND |
2014-05-21 | AD91671 | ND |
2014-05-21 | AD91672 | ND |
2014-05-21 | AD91673 | 0.790 ppb |
2014-05-21 | AD91671 | ND |
2014-05-21 | AD91673 | 0.790 ppb |
2016-06-20 | 35250786003 | 0.620 ppb |
2016-06-20 | 35250786004 | 0.690 ppb |
2016-06-20 | 35250786005 | 1.40 ppb |
2016-06-20 | 35250786002 | ND |
2016-06-20 | 35250786001 | ND |
2016-06-20 | 35250786005 | 1.40 ppb |
2016-06-20 | 35250786001 | ND |
2016-06-20 | 35250786002 | ND |
2016-06-20 | 35250786003 | 0.620 ppb |
2016-06-20 | 35250786004 | 0.690 ppb |
2019-05-20 | 35469857002 | ND |
2019-05-20 | 35469857001 | ND |
2019-05-20 | 35469857001 | ND |
2019-05-20 | 35469857002 | ND |
2019-05-21 | 35470500001 | 0.350 ppb |
2019-05-21 | 35470500002 | 0.380 ppb |
2019-05-21 | 35470500001 | 0.350 ppb |
2019-05-21 | 35470500002 | 0.380 ppb |
2019-06-12 | 35475393005 | ND |
2019-06-12 | 35475393005 | ND |