cis-1,2-Dichloroethylene
Ventura County Waterworks District No. 19 - Somis
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.
12
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 | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 3 | 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 |
|---|---|---|
| 2014-09-03 | 5867-007-1004 | ND |
| 2014-09-09 | 5867-002-1241 | ND |
| 2015-07-16 | 5867-001-0820 | ND |
| 2017-08-01 | 5867-001-1419 | ND |
| 2017-08-01 | 5867-002-1343 | ND |
| 2017-08-01 | 5867-007-0815 | ND |
| 2018-08-01 | 5867-002-1404 | ND |
| 2018-08-01 | 5867-007-1337 | ND |
| 2018-08-14 | 5867-001-1147 | ND |
| 2019-08-07 | 5867-001-1409 | ND |
| 2019-08-07 | 5867-002-1345 | ND |
| 2019-08-07 | 5867-007-1317 | ND |