cis-1,2-Dichloroethylene
City of Plaquemine Water System
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.
27
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 | 0.146 ppb | 10 | 4 | ND - 0.380 ppb |
| 2020 | ND | 4 | 0 | ND |
| 2021 | 0.605 ppb | 4 | 4 | 0.440 ppb - 0.910 ppb |
| 2022 | 0.216 ppb | 5 | 2 | ND - 0.690 ppb |
| 2023 | 0.295 ppb | 4 | 2 | ND - 0.690 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 |
|---|---|---|
| 2019-05-20 | 35469857001 | ND |
| 2019-05-20 | 35469857002 | ND |
| 2019-05-20 | 35469857001 | ND |
| 2019-05-20 | 35469857002 | ND |
| 2019-05-21 | 35470500001 | 0.350 ppb |
| 2019-05-21 | 35470500002 | 0.380 ppb |
| 2019-05-21 | 35470500001 | 0.350 ppb |
| 2019-05-21 | 35470500002 | 0.380 ppb |
| 2019-06-12 | 35475393005 | ND |
| 2019-06-12 | 35475393005 | ND |
| 2020-06-01 | 35554093004 | ND |
| 2020-06-01 | 35554093003 | ND |
| 2020-06-01 | 35554093002 | ND |
| 2020-06-01 | 35554093001 | ND |
| 2021-05-25 | 35636158001 | 0.440 ppb |
| 2021-05-25 | 35636158002 | 0.550 ppb |
| 2021-05-25 | 35636158003 | 0.910 ppb |
| 2021-05-25 | 35636158004 | 0.520 ppb |
| 2022-05-16 | 35718662001 | ND |
| 2022-05-16 | 35718662002 | 0.390 ppb |
| 2022-05-16 | 35718662003 | 0.690 ppb |
| 2022-05-16 | 35718662004 | ND |
| 2022-05-16 | 35718662005 | ND |
| 2023-10-30 | 35838246001 | ND |
| 2023-10-30 | 35838246002 | ND |
| 2023-10-30 | 35838246003 | 0.490 ppb |
| 2023-10-30 | 35838246004 | 0.690 ppb |