cis-1,2-Dichloroethylene
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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 | 6.90 ppb | 4 | 4 | 4.10 ppb - 9.40 ppb |
| 2019 | 4.25 ppb | 4 | 4 | 3.80 ppb - 4.90 ppb |
| 2020 | 4.83 ppb | 4 | 4 | 4.70 ppb - 4.90 ppb |
| 2021 | 4.55 ppb | 4 | 4 | 4.30 ppb - 5.00 ppb |
| 2022 | 4.43 ppb | 4 | 4 | 4.10 ppb - 4.70 ppb |
| 2023 | 5.35 ppb | 4 | 4 | 4.50 ppb - 6.10 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 |
|---|---|---|
| 2018-01-10 | 38158601 | 7.90 ppb |
| 2018-04-04 | 39069901 | 9.40 ppb |
| 2018-07-03 | 40201501 | 6.20 ppb |
| 2018-10-04 | 41308901 | 4.10 ppb |
| 2019-01-09 | 42495701 | 4.30 ppb |
| 2019-04-10 | 43656201 | 4.90 ppb |
| 2019-07-16 | 45013801 | 3.80 ppb |
| 2019-10-10 | 46829601 | 4.00 ppb |
| 2020-02-12 | 21682286.00 | 4.90 ppb |
| 2020-04-09 | 22039227.00 | 4.90 ppb |
| 2020-07-09 | 22623453.00 | 4.70 ppb |
| 2020-10-06 | 23198007.00 | 4.80 ppb |
| 2021-01-08 | 23727850.00 | 4.40 ppb |
| 2021-04-06 | 24263160.00 | 5.00 ppb |
| 2021-08-12 | 25038897.00 | 4.50 ppb |
| 2021-10-13 | 25420763.00 | 4.30 ppb |
| 2022-01-06 | 25957943.00 | 4.70 ppb |
| 2022-04-06 | 26479745.00 | 4.10 ppb |
| 2022-07-13 | 27053539.00 | 4.40 ppb |
| 2022-10-05 | 27656701.00 | 4.50 ppb |
| 2023-01-05 | 28187436.00 | 4.50 ppb |
| 2023-04-05 | 28718736.00 | 5.10 ppb |
| 2023-07-06 | 29317604.00 | 5.70 ppb |
| 2023-10-05 | 29901736.00 | 6.10 ppb |