cis-1,2-Dichloroethylene
Huxley Waterworks Department
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.
13
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 | N/A | 0 | 0 | N/A |
| 2019 | 0.770 ppb | 1 | 1 | 0.770 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.210 ppb | 3 | 1 | ND - 0.630 ppb |
| 2022 | 0.780 ppb | 5 | 2 | ND - 2.18 ppb |
| 2023 | 0.200 ppb | 4 | 1 | ND - 0.800 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 |
|---|---|---|
| 2019-07-18 | 1G91640-01 | 0.770 ppb |
| 2021-06-16 | 1EF1702-01 | 0.630 ppb |
| 2021-07-02 | 1EG0246-01 | ND |
| 2021-11-12 | 1EK1376-01 | ND |
| 2022-01-06 | 1FA0483-01 | ND |
| 2022-05-18 | 1FE2155-01 | ND |
| 2022-08-04 | 1FH0547-01 | 2.18 ppb |
| 2022-09-20 | 1FI1867-01 | ND |
| 2022-10-20 | 1FJ1990-01 | 1.72 ppb |
| 2023-01-19 | 1GA1753-01 | ND |
| 2023-04-06 | 1GD0681-01 | 0.800 ppb |
| 2023-07-27 | 1GG2605-01 | ND |
| 2023-10-26 | 1GJ2404-01 | ND |