trans-1,2-Dichloroethylene
Gettysburg Municipal 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 10 | 0 | ND |
| 2019 | ND | 9 | 0 | ND |
| 2020 | ND | 13 | 0 | ND |
| 2021 | ND | 11 | 0 | ND |
| 2022 | ND | 10 | 0 | ND |
| 2023 | ND | 14 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for trans-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 |
|---|---|---|
| 2018-02-16 | 8004942-01 | ND |
| 2018-02-16 | 8004942-04 | ND |
| 2018-02-16 | 8004942-02 | ND |
| 2018-02-16 | 8004942-03 | ND |
| 2018-06-07 | 8016343-03 | ND |
| 2018-06-07 | 8016343-04 | ND |
| 2018-09-19 | 8028077-02 | ND |
| 2018-09-19 | 8028077-01 | ND |
| 2018-12-11 | 8037566-01 | ND |
| 2018-12-11 | 8037566-02 | ND |
| 2019-03-13 | 9008380-02 | ND |
| 2019-03-13 | 9008380-01 | ND |
| 2019-03-19 | 9009257-01 | ND |
| 2019-06-05 | 9019242-03 | ND |
| 2019-06-05 | 9019242-02 | ND |
| 2019-06-05 | 9019242-04 | ND |
| 2019-06-05 | 9019242-01 | ND |
| 2019-11-27 | 9042107-02 | ND |
| 2019-11-27 | 9042107-01 | ND |
| 2020-03-03 | 21965957.00 | ND |
| 2020-03-03 | 21965936.00 | ND |
| 2020-06-03 | 22349849.00 | ND |
| 2020-06-03 | 22349828.00 | ND |
| 2020-08-18 | 22936912.00 | ND |
| 2020-08-18 | 22936891.00 | ND |
| 2020-08-19 | 22936870.00 | ND |
| 2020-08-19 | 22936849.00 | ND |
| 2020-08-24 | 22936980.00 | ND |
| 2020-08-24 | 22936959.00 | ND |
| 2020-08-24 | 22936938.00 | ND |
| 2020-12-01 | 23480653.00 | ND |
| 2020-12-01 | 23480632.00 | ND |
| 2021-03-02 | 24185794.00 | ND |
| 2021-03-02 | 24185773.00 | ND |
| 2021-06-21 | 24770329.00 | ND |
| 2021-06-21 | 24770331.00 | ND |
| 2021-06-21 | 24770328.00 | ND |
| 2021-06-21 | 24770330.00 | ND |
| 2021-06-23 | 24770332.00 | ND |
| 2021-08-18 | 25160073.00 | ND |
| 2021-08-18 | 25160094.00 | ND |
| 2021-10-19 | 25531539.00 | ND |
| 2021-11-02 | 25531867.00 | ND |
| 2022-01-18 | 26063428.00 | ND |
| 2022-02-01 | 26063721.00 | ND |
| 2022-04-12 | 26589401.00 | ND |
| 2022-04-12 | 26589422.00 | ND |
| 2022-04-19 | 26589487.00 | ND |
| 2022-07-26 | 27174037.00 | ND |
| 2022-07-26 | 27174016.00 | ND |
| 2022-07-26 | 27173995.00 | ND |
| 2022-10-11 | 27768766.00 | ND |
| 2022-10-11 | 27768745.00 | ND |
| 2023-02-21 | 28466277.00 | ND |
| 2023-02-21 | 28466256.00 | ND |
| 2023-02-28 | 28466367.00 | ND |
| 2023-02-28 | 28466388.00 | ND |
| 2023-03-21 | 28645597.00 | ND |
| 2023-04-18 | 28839834.00 | ND |
| 2023-04-18 | 28839813.00 | ND |
| 2023-04-25 | 28840181.00 | ND |
| 2023-04-25 | 28840160.00 | ND |
| 2023-05-16 | 29040436.00 | ND |
| 2023-08-01 | 29436209.00 | ND |
| 2023-08-01 | 29436188.00 | ND |
| 2023-10-24 | 30014348.00 | ND |
| 2023-10-24 | 30014327.00 | ND |