cis-1,2-Dichloroethylene
Altoona Water Authority
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.
37
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 | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 5 | 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 |
|---|---|---|
| 2018-08-28 | 8H28046-01 | ND |
| 2018-08-28 | 8H28044-01 | ND |
| 2018-08-28 | 8H28051-01 | ND |
| 2018-08-28 | 8H28032-01 | ND |
| 2018-08-28 | 8H28031-01 | ND |
| 2018-08-28 | 8H28047-01 | ND |
| 2019-11-06 | 9K07058-01 | ND |
| 2019-11-06 | 9K07058-03 | ND |
| 2019-11-07 | 9K07074-01 | ND |
| 2019-11-07 | 9K07072-01 | ND |
| 2019-12-05 | 9L05126-01 | ND |
| 2020-02-06 | 21729169.00 | ND |
| 2020-08-05 | 22869686.00 | ND |
| 2020-08-05 | 22869685.00 | ND |
| 2020-08-05 | 22869684.00 | ND |
| 2020-08-10 | 22869897.00 | ND |
| 2020-08-10 | 22869898.00 | ND |
| 2020-08-10 | 22869896.00 | ND |
| 2021-07-01 | 24897498.00 | ND |
| 2021-07-08 | 24897519.00 | ND |
| 2021-08-10 | 25092069.00 | ND |
| 2021-08-10 | 25092006.00 | ND |
| 2021-08-10 | 25092068.00 | ND |
| 2021-08-10 | 25092007.00 | ND |
| 2021-08-10 | 25092008.00 | ND |
| 2021-12-13 | 25828695.00 | ND |
| 2022-02-24 | 26177232.00 | ND |
| 2022-08-16 | 27309594.00 | ND |
| 2022-08-16 | 27309670.00 | ND |
| 2022-08-16 | 27308835.00 | ND |
| 2022-08-16 | 27309636.00 | ND |
| 2022-11-10 | 27885517.00 | ND |
| 2023-07-26 | 29371563.00 | ND |
| 2023-07-26 | 29371520.00 | ND |
| 2023-07-26 | 29371476.00 | ND |
| 2023-07-26 | 29371542.00 | ND |
| 2023-07-26 | 29371498.00 | ND |