trans-1,2-Dichloroethylene
Telford Borough 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 | 14 | 0 | ND |
| 2019 | ND | 14 | 0 | ND |
| 2020 | ND | 14 | 0 | ND |
| 2021 | ND | 12 | 0 | ND |
| 2022 | ND | 14 | 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 |
|---|---|---|
| 2018-02-12 | 20180562 | ND |
| 2018-02-12 | 20180560 | ND |
| 2018-02-12 | 20180561 | ND |
| 2018-05-03 | 20181778 | ND |
| 2018-05-03 | 20181777 | ND |
| 2018-05-03 | 20181776 | ND |
| 2018-05-03 | 20181774 | ND |
| 2018-05-03 | 20181775 | ND |
| 2018-08-01 | 20182933 | ND |
| 2018-08-01 | 20182931 | ND |
| 2018-08-01 | 20182932 | ND |
| 2018-11-27 | 8114737-02 | ND |
| 2018-11-27 | 8114737-01 | ND |
| 2018-11-27 | 8114737-03 | ND |
| 2019-02-06 | 20190503 | ND |
| 2019-02-06 | 20190504 | ND |
| 2019-02-06 | 20190505 | ND |
| 2019-05-01 | 20191634 | ND |
| 2019-05-01 | 20191637 | ND |
| 2019-05-01 | 20191635 | ND |
| 2019-05-01 | 20191633 | ND |
| 2019-05-01 | 20191636 | ND |
| 2019-08-07 | 20193060 | ND |
| 2019-08-07 | 20193062 | ND |
| 2019-08-07 | 20193061 | ND |
| 2019-11-06 | 20194363 | ND |
| 2019-11-06 | 20194361 | ND |
| 2019-11-06 | 20194362 | ND |
| 2020-02-05 | 21669879.00 | ND |
| 2020-02-05 | 21669858.00 | ND |
| 2020-02-05 | 21669837.00 | ND |
| 2020-05-06 | 22218195.00 | ND |
| 2020-05-06 | 22218174.00 | ND |
| 2020-05-06 | 22218153.00 | ND |
| 2020-05-06 | 22218132.00 | ND |
| 2020-05-06 | 22218111.00 | ND |
| 2020-08-05 | 22610586.00 | ND |
| 2020-08-05 | 22610607.00 | ND |
| 2020-08-05 | 22610628.00 | ND |
| 2020-11-04 | 23364701.00 | ND |
| 2020-11-04 | 23364722.00 | ND |
| 2020-12-01 | 23540056.00 | ND |
| 2021-02-03 | 23891158.00 | ND |
| 2021-02-03 | 23891200.00 | ND |
| 2021-02-03 | 23891179.00 | ND |
| 2021-05-19 | 24441406.00 | ND |
| 2021-05-19 | 24441364.00 | ND |
| 2021-05-19 | 24441448.00 | ND |
| 2021-05-19 | 24441427.00 | ND |
| 2021-05-19 | 24441385.00 | ND |
| 2021-08-04 | 24831813.00 | ND |
| 2021-08-04 | 24831834.00 | ND |
| 2021-11-03 | 25590472.00 | ND |
| 2021-11-03 | 25590451.00 | ND |
| 2022-02-02 | 26119956.00 | ND |
| 2022-02-02 | 26119977.00 | ND |
| 2022-03-02 | 26289905.00 | ND |
| 2022-05-04 | 26651314.00 | ND |
| 2022-05-04 | 26651293.00 | ND |
| 2022-05-04 | 26651272.00 | ND |
| 2022-05-04 | 26651251.00 | ND |
| 2022-06-08 | 26845268.00 | ND |
| 2022-08-03 | 27236563.00 | ND |
| 2022-08-03 | 27236584.00 | ND |
| 2022-08-03 | 27236542.00 | ND |
| 2022-11-02 | 27825176.00 | ND |
| 2022-11-02 | 27825197.00 | ND |
| 2022-11-02 | 27825155.00 | ND |
| 2023-02-01 | 28351673.00 | ND |
| 2023-02-01 | 28351694.00 | ND |
| 2023-02-01 | 28351715.00 | ND |
| 2023-05-22 | 28902985.00 | ND |
| 2023-05-22 | 28902983.00 | ND |
| 2023-05-22 | 28902982.00 | ND |
| 2023-05-22 | 28902986.00 | ND |
| 2023-05-22 | 28902984.00 | ND |
| 2023-08-02 | 29499988.00 | ND |
| 2023-08-02 | 29499967.00 | ND |
| 2023-08-02 | 29499946.00 | ND |
| 2023-11-01 | 30073673.00 | ND |
| 2023-11-01 | 30073652.00 | ND |
| 2023-11-01 | 30073631.00 | ND |