cis-1,2-Dichloroethylene
East Alton
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.
24
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 | 3.20 ppb | 4 | 4 | 2.80 ppb - 3.70 ppb |
| 2019 | 2.60 ppb | 4 | 4 | 1.30 ppb - 3.60 ppb |
| 2020 | 4.03 ppb | 4 | 4 | 3.60 ppb - 4.60 ppb |
| 2021 | 3.26 ppb | 4 | 4 | 0.520 ppb - 4.40 ppb |
| 2022 | 2.44 ppb | 4 | 4 | 0.660 ppb - 4.20 ppb |
| 2023 | 2.92 ppb | 4 | 4 | 0.670 ppb - 4.50 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 | 8013018-01 | 3.70 ppb |
| 2018-04-03 | 8041291-01 | 2.90 ppb |
| 2018-08-28 | 8085787-01 | 3.40 ppb |
| 2018-10-22 | 8105047-01 | 2.80 ppb |
| 2019-01-22 | 9014063-01 | 2.90 ppb |
| 2019-04-29 | 9050017-01 | 3.60 ppb |
| 2019-07-24 | 9075426-01 | 2.60 ppb |
| 2019-10-22 | 9105187-01 | 1.30 ppb |
| 2020-01-07 | 0011946-01 | 4.60 ppb |
| 2020-04-29 | 0050025-01 | 3.90 ppb |
| 2020-08-24 | 0085846-01 | 3.60 ppb |
| 2020-10-06 | 0101784-01 | 4.00 ppb |
| 2021-01-25 | EA04364-01 | 4.40 ppb |
| 2021-04-20 | ED04366-01 | 4.00 ppb |
| 2021-07-20 | EG04577-01 | 0.520 ppb |
| 2021-10-26 | EJ05305-01 | 4.10 ppb |
| 2022-01-11 | FA02423-01 | 3.30 ppb |
| 2022-04-19 | FD03918-01 | 0.660 ppb |
| 2022-08-01 | FH00772-01 | 4.20 ppb |
| 2022-10-25 | FJ04962-01 | 1.60 ppb |
| 2023-01-23 | GA04262-01 | 3.40 ppb |
| 2023-04-25 | GD04539-01 | 3.10 ppb |
| 2023-07-31 | GH00321-01 | 0.670 ppb |
| 2023-10-17 | GJ03547-01 | 4.50 ppb |