cis-1,2-Dichloroethylene
Bear Valley Joint 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.
11
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
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 | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 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 |
|---|---|---|
| 2014-06-03 | 2010446001 | ND |
| 2015-08-12 | 13230880 | ND |
| 2016-10-06 | 15189967 | ND |
| 2017-09-19 | 16840919 | ND |
| 2018-05-29 | (102) | ND |
| 2018-07-17 | (102) | ND |
| 2018-10-16 | (101) TREATM | ND |
| 2018-11-27 | (102) | ND |
| 2019-02-19 | (102) | ND |
| 2019-11-06 | 9K07106-01 | ND |
| 2019-12-17 | 9L18235-01 | ND |