cis-1,2-Dichloroethylene
City of San Clemente
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 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 |
|---|---|---|
| 2014-03-12 | 1805-021-0925 | ND |
| 2014-04-09 | 1805-004-1010 | ND |
| 2015-03-11 | 1805-021-1105 | ND |
| 2016-03-11 | 1805-021-1045 | ND |
| 2016-05-17 | 1805-004-1040 | ND |
| 2017-03-08 | 1805-021-1120 | ND |
| 2017-05-01 | 1805-004-0000 | ND |
| 2018-03-07 | 1805-021-0845 | ND |
| 2018-05-08 | 1805-004-0955 | ND |
| 2019-01-08 | 1805-021-1103 | ND |
| 2019-05-08 | 1805-004-0935 | ND |