cis-1,2-Dichloroethylene
State College Boro Water Auth.
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.
23
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 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 8 | 0 | ND |
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 |
|---|---|---|
| 2018-02-14 | 8B14177-01 | ND |
| 2019-02-12 | 9B12139-01 | ND |
| 2020-02-12 | 21735599.00 | ND |
| 2020-02-12 | 21735598.00 | ND |
| 2020-02-12 | 21735597.00 | ND |
| 2020-02-12 | 21735596.00 | ND |
| 2020-02-12 | 21735595.00 | ND |
| 2021-02-16 | 23953991.00 | ND |
| 2021-04-07 | 24321965.00 | ND |
| 2021-08-16 | 25098832.00 | ND |
| 2021-09-13 | 25291235.00 | ND |
| 2021-11-15 | 25654881.00 | ND |
| 2022-02-15 | 26182281.00 | ND |
| 2022-09-01 | 27520784.00 | ND |
| 2022-11-16 | 27890861.00 | ND |
| 2023-02-14 | 28415051.00 | ND |
| 2023-05-16 | 28981572.00 | ND |
| 2023-08-14 | 29577811.00 | ND |
| 2023-11-13 | 30139893.00 | ND |
| 2023-12-20 | 30314231.00 | ND |
| 2023-12-20 | 30314294.00 | ND |
| 2023-12-20 | 30314252.00 | ND |
| 2023-12-20 | 30314273.00 | ND |