cis-1,2-Dichloroethylene
The Harbor
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 | N/A | 0 | 0 | N/A |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 1 | 0 | ND |
2018 | ND | 5 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2015-06-08 | 345744 | ND |
2015-08-19 | 390604 | ND |
2015-11-17 | 428018 | ND |
2016-02-17 | 494511 | ND |
2016-05-24 | 551139 | ND |
2016-08-17 | 604725 | ND |
2017-02-14 | 708866 | ND |
2018-02-11 | 907920 | ND |
2018-02-27 | 928373 | ND |
2018-05-09 | 967961 | ND |
2018-08-14 | 1025112 | ND |
2018-11-13 | 1076475 | ND |
2019-02-19 | 1123010 | ND |
2019-05-13 | 1157718 | ND |