cis-1,2-Dichloroethylene
Tesoro Viejo Master Mwc, Inc.
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.
41
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 8 | 0 | ND |
| 2021 | ND | 9 | 0 | ND |
| 2022 | ND | 9 | 0 | ND |
| 2023 | ND | 9 | 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 |
|---|---|---|
| 2018-08-31 | CA2010017_002_002-201808310845 | ND |
| 2018-12-06 | CA2010017_006_006-201812061033 | ND |
| 2018-12-12 | CA2010017_001_001-201812121100 | ND |
| 2019-03-20 | CA2010017_001_001-201903200815 | ND |
| 2019-08-21 | CA2010017_002_002-201908210955 | ND |
| 2019-11-14 | CA2010017_006_006-201911141100 | ND |
| 2020-02-19 | CA2010017_006_006-202002190915 | ND |
| 2020-05-13 | CA2010017_006_006-202005131000 | ND |
| 2020-06-03 | CA2010017_002_002-202006031215 | ND |
| 2020-06-09 | CA2010017_001_001-202006090845 | ND |
| 2020-08-19 | CA2010017_006_006-202008191005 | ND |
| 2020-09-02 | CA2010017_001_001-202009020840 | ND |
| 2020-11-24 | CA2010017_006_006-202011241030 | ND |
| 2020-12-09 | CA2010017_001_001-202012090945 | ND |
| 2021-02-17 | CA2010017_006_006-202102171035 | ND |
| 2021-03-16 | CA2010017_001_001-202103161000 | ND |
| 2021-05-12 | CA2010017_006_006-202105121015 | ND |
| 2021-06-09 | CA2010017_001_001-202106090845 | ND |
| 2021-06-28 | CA2010017_002_002-202106280955 | ND |
| 2021-08-18 | CA2010017_006_006-202108180845 | ND |
| 2021-09-15 | CA2010017_001_001-202109151045 | ND |
| 2021-11-10 | CA2010017_006_006-202111101025 | ND |
| 2021-12-07 | CA2010017_001_001-202112070915 | ND |
| 2022-02-16 | CA2010017_006_006-202202160920 | ND |
| 2022-03-10 | CA2010017_001_001-202203100845 | ND |
| 2022-05-18 | CA2010017_006_006-202205181055 | ND |
| 2022-06-08 | CA2010017_001_001-202206080930 | ND |
| 2022-07-06 | CA2010017_002_002-202207060900 | ND |
| 2022-08-17 | CA2010017_006_006-202208170810 | ND |
| 2022-09-13 | CA2010017_001_001-202209131030 | ND |
| 2022-11-16 | CA2010017_006_006-202211160655 | ND |
| 2022-12-13 | CA2010017_001_001-202212131130 | ND |
| 2023-02-13 | CA2010017_002_002-202302130630 | ND |
| 2023-02-14 | CA2010017_006_006-202302141040 | ND |
| 2023-03-20 | CA2010017_001_001-202303201430 | ND |
| 2023-05-16 | CA2010017_006_006-202305160805 | ND |
| 2023-06-20 | CA2010017_001_001-202306200755 | ND |
| 2023-08-22 | CA2010017_006_006-202308221040 | ND |
| 2023-09-27 | CA2010017_001_001-202309270940 | ND |
| 2023-11-21 | CA2010017_006_006-202311210655 | ND |
| 2023-12-05 | CA2010017_001_001-202312050845 | ND |