cis-1,2-Dichloroethylene
Hesperia Water 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.
16
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 16 | 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 |
|---|---|---|
| 2019-07-08 | 3761-010-0900 | ND |
| 2019-07-08 | 3761-012-0830 | ND |
| 2019-07-08 | 3761-013-0800 | ND |
| 2019-07-08 | 3761-018-0730 | ND |
| 2019-07-08 | 3761-019-0600 | ND |
| 2019-07-08 | 3761-038-0700 | ND |
| 2019-07-08 | 3761-039-0630 | ND |
| 2019-07-10 | 3761-015-1030 | ND |
| 2019-07-15 | 3761-014-0815 | ND |
| 2019-07-15 | 3761-036-0840 | ND |
| 2019-07-22 | 3761-005-0730 | ND |
| 2019-07-23 | 3761-021-0645 | ND |
| 2019-07-25 | 3761-002-0800 | ND |
| 2019-07-29 | 3761-009-0830 | ND |
| 2019-07-30 | 3761-022-0835 | ND |
| 2019-08-01 | 3761-033-0830 | ND |