cis-1,2-Dichloroethylene
Clare, 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.
40
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 | N/A | 0 | 0 | N/A |
| 2020 | 10.7 ppb | 9 | 6 | ND - 27.0 ppb |
| 2021 | 7.92 ppb | 11 | 8 | ND - 21.0 ppb |
| 2022 | 8.89 ppb | 10 | 8 | ND - 24.0 ppb |
| 2023 | 7.78 ppb | 10 | 8 | ND - 18.0 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 |
|---|---|---|
| 2020-01-08 | 24.0 ppb | |
| 2020-01-08 | ND | |
| 2020-01-08 | 2.70 ppb | |
| 2020-01-08 | ND | |
| 2020-04-14 | 20.0 ppb | |
| 2020-04-14 | 3.50 ppb | |
| 2020-07-01 | 19.0 ppb | |
| 2020-07-01 | 27.0 ppb | |
| 2020-10-14 | ND | |
| 2021-01-05 | ND | |
| 2021-01-05 | 20.0 ppb | |
| 2021-01-05 | ND | |
| 2021-01-05 | 2.40 ppb | |
| 2021-04-07 | 21.0 ppb | |
| 2021-04-07 | 2.60 ppb | |
| 2021-06-03 | ND | |
| 2021-07-07 | 19.0 ppb | |
| 2021-07-07 | 2.40 ppb | |
| 2021-10-05 | 2.70 ppb | |
| 2021-10-05 | 17.0 ppb | |
| 2022-01-10 | 3.10 ppb | |
| 2022-01-10 | ND | |
| 2022-01-10 | ND | |
| 2022-01-10 | 16.0 ppb | |
| 2022-04-06 | 3.20 ppb | |
| 2022-04-06 | 24.0 ppb | |
| 2022-07-13 | 19.0 ppb | |
| 2022-07-13 | 2.80 ppb | |
| 2022-10-05 | 2.80 ppb | |
| 2022-10-05 | 18.0 ppb | |
| 2023-01-11 | 3.00 ppb | |
| 2023-01-11 | 17.0 ppb | |
| 2023-01-11 | ND | |
| 2023-01-11 | ND | |
| 2023-04-05 | 3.40 ppb | |
| 2023-04-05 | 18.0 ppb | |
| 2023-07-05 | 2.80 ppb | |
| 2023-07-05 | 18.0 ppb | |
| 2023-10-04 | 13.0 ppb | |
| 2023-10-04 | 2.60 ppb |