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.
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 |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-03-19 | CA1910020_012_012-201803190855 | ND |
| 2018-03-19 | CA1910020_005_005-201803190940 | ND |
| 2018-04-11 | CA1910020_012_012-201804111035 | ND |
| 2018-07-12 | CA1910020_005_005-201807121035 | ND |
| 2019-04-03 | CA1910020_012_012-201904031000 | ND |
| 2019-07-29 | CA1910020_005_005-201907291225 | ND |
| 2020-04-02 | CA1910020_012_012-202004021030 | ND |
| 2020-07-09 | CA1910020_005_005-202007091040 | ND |
| 2021-03-08 | CA1910020_005_005-202103080910 | ND |
| 2021-03-08 | CA1910020_012_012-202103080845 | ND |
| 2021-04-12 | CA1910020_012_012-202104121010 | ND |
| 2021-07-13 | CA1910020_005_005-202107131115 | ND |
| 2022-04-20 | CA1910020_012_012-202204201155 | ND |
| 2022-08-09 | CA1910020_005_005-202208091125 | ND |
| 2023-05-10 | CA1910020_012_012-202305101055 | ND |
| 2023-08-16 | CA1910020_005_005-202308161040 | ND |