cis-1,2-Dichloroethylene
East Pasadena Water Company
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.
23
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 | 4 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 7 | 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 |
|---|---|---|
| 2014-03-17 | 3761-004-0840 | ND |
| 2014-04-07 | 9588-012-1115 | ND |
| 2014-05-27 | 3761-012-0845 | ND |
| 2014-07-07 | 9588-005-1000 | ND |
| 2015-03-17 | 3761-004-0820 | ND |
| 2015-04-01 | 9588-012-0910 | ND |
| 2015-07-15 | 9588-005-1030 | ND |
| 2016-03-21 | 3761-004-0840 | ND |
| 2016-04-12 | 9588-012-1105 | ND |
| 2016-07-06 | 9588-005-1145 | ND |
| 2017-03-27 | 3761-004-0950 | ND |
| 2017-04-11 | 9588-012-1050 | ND |
| 2017-07-13 | 9588-005-1330 | ND |
| 2018-03-19 | 3761-005-0940 | ND |
| 2018-03-19 | 3761-012-0855 | ND |
| 2018-03-19 | 3761-004-1000 | ND |
| 2018-04-11 | 9588-012-1035 | ND |
| 2018-04-26 | 3761-004-0840 | ND |
| 2018-05-22 | 3761-004-1130 | ND |
| 2018-07-12 | 9588-005-1035 | ND |
| 2019-03-11 | 3761-004-0820 | ND |
| 2019-04-03 | 9588-012-1000 | ND |
| 2019-07-29 | 9588-005-1225 | ND |