cis-1,2-Dichloroethylene
Palm Ranch Irrigation District
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2016-07-19 | 3761-001-0819 | ND |
| 2016-07-19 | 3761-002-0852 | ND |
| 2016-07-19 | 3761-007-0838 | ND |
| 2016-07-19 | 3761-013-0854 | ND |
| 2016-08-30 | 3761-001-0700 | ND |
| 2016-08-30 | 3761-002-0805 | ND |
| 2016-08-30 | 3761-004-0720 | ND |
| 2016-08-30 | 3761-007-0740 | ND |
| 2019-05-28 | 3761-001-0850 | ND |
| 2019-06-04 | 3761-002-0635 | ND |
| 2019-06-11 | 3761-007-0636 | ND |