cis-1,2-Dichloroethylene
West Point, City of
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.
25
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 | 1.44 ppb | 3 | 3 | 0.920 ppb - 2.39 ppb |
| 2019 | 0.670 ppb | 3 | 1 | ND - 2.01 ppb |
| 2020 | 1.27 ppb | 3 | 2 | ND - 2.29 ppb |
| 2021 | 1.24 ppb | 3 | 3 | 1.19 ppb - 1.30 ppb |
| 2022 | 1.35 ppb | 5 | 5 | 0.860 ppb - 2.00 ppb |
| 2023 | 0.728 ppb | 8 | 5 | ND - 2.22 ppb |
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 |
|---|---|---|
| 2018-01-16 | 530842 | 2.39 ppb |
| 2018-09-24 | 571941 | 0.998 ppb |
| 2018-09-24 | 571940 | 0.920 ppb |
| 2019-01-14 | 592531 | 2.01 ppb |
| 2019-09-03 | 630428 | ND |
| 2019-09-03 | 630429 | ND |
| 2020-02-10 | 650614 | 2.29 ppb |
| 2020-09-14 | 689975 | 1.53 ppb |
| 2020-09-14 | 689974 | ND |
| 2021-01-19 | 713005 | 1.19 ppb |
| 2021-09-21 | 764409 | 1.30 ppb |
| 2021-09-21 | 764408 | 1.23 ppb |
| 2022-01-18 | 778908 | 2.00 ppb |
| 2022-09-12 | 822877 | 1.47 ppb |
| 2022-09-12 | 822878 | 1.54 ppb |
| 2022-12-05 | 835790 | 0.870 ppb |
| 2022-12-05 | 835789 | 0.860 ppb |
| 2023-03-06 | 851386 | ND |
| 2023-03-06 | 851387 | ND |
| 2023-06-19 | 864105 | 2.22 ppb |
| 2023-06-19 | 864104 | ND |
| 2023-09-06 | 879906 | 0.950 ppb |
| 2023-09-06 | 879907 | 0.920 ppb |
| 2023-12-05 | 891492 | 0.860 ppb |
| 2023-12-05 | 891491 | 0.870 ppb |