cis-1,2-Dichloroethylene
Hampton Shaler 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 |
---|---|---|---|---|
2014 | ND | 1 | 0 | ND |
2015 | ND | 1 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | 1.06 ppb | 2 | 1 | ND - 2.11 ppb |
2019 | 1.18 ppb | 2 | 2 | 0.666 ppb - 1.70 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 |
---|---|---|
2014-07-08 | 07140625 | ND |
2015-08-17 | 13197381 | ND |
2016-07-18 | 14652111 | ND |
2016-08-12 | 14820429 | ND |
2017-07-06 | 16487458 | ND |
2017-07-18 | 16487478 | ND |
2018-07-12 | 18G1226-01 | 2.11 ppb |
2018-07-26 | 18G2476-01 | ND |
2019-07-01 | 19G1202-01 | 1.70 ppb |
2019-07-19 | 19G2512-01 | 0.666 ppb |