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 |
|---|---|---|---|---|
| 2014 | ND | 14 | 0 | ND |
| 2015 | ND | 14 | 0 | ND |
| 2016 | ND | 16 | 0 | ND |
| 2017 | ND | 14 | 0 | ND |
| 2018 | ND | 14 | 0 | ND |
| 2019 | ND | 14 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-02-11 | 20140538 | ND |
| 2014-02-11 | 20140540 | ND |
| 2014-02-11 | 20140539 | ND |
| 2014-04-02 | 20141150 | ND |
| 2014-04-02 | 20141147 | ND |
| 2014-04-02 | 20141149 | ND |
| 2014-04-02 | 20141148 | ND |
| 2014-06-03 | 20141878 | ND |
| 2014-07-16 | 20142431 | ND |
| 2014-07-16 | 20142433 | ND |
| 2014-07-16 | 20142432 | ND |
| 2014-11-05 | 14110360-003 | ND |
| 2014-11-05 | 14110360-002 | ND |
| 2014-11-05 | 14110360-001 | ND |
| 2015-02-11 | 12403519 | ND |
| 2015-02-11 | 12403561 | ND |
| 2015-02-11 | 12403540 | ND |
| 2015-04-14 | 12635040 | ND |
| 2015-04-14 | 12634956 | ND |
| 2015-04-14 | 12635019 | ND |
| 2015-04-14 | 12634977 | ND |
| 2015-04-14 | 12634998 | ND |
| 2015-07-14 | 13014685 | ND |
| 2015-07-14 | 13014687 | ND |
| 2015-07-14 | 13014686 | ND |
| 2015-10-07 | 13390817 | ND |
| 2015-10-07 | 13390796 | ND |
| 2015-10-07 | 13390775 | ND |
| 2016-01-18 | 13754465 | ND |
| 2016-03-02 | 13871955 | ND |
| 2016-03-02 | 13871934 | ND |
| 2016-04-13 | 14104830 | ND |
| 2016-04-13 | 14104914 | ND |
| 2016-04-13 | 14104872 | ND |
| 2016-04-13 | 14104893 | ND |
| 2016-04-13 | 14104851 | ND |
| 2016-07-13 | 14572203 | ND |
| 2016-07-13 | 14572257 | ND |
| 2016-07-13 | 14572305 | ND |
| 2016-07-13 | 14572284 | ND |
| 2016-07-13 | 14572230 | ND |
| 2016-10-12 | 15077672 | ND |
| 2016-10-12 | 15077714 | ND |
| 2016-10-12 | 15077693 | ND |
| 2017-02-15 | 15657722 | ND |
| 2017-02-15 | 15657701 | ND |
| 2017-02-15 | 15657743 | ND |
| 2017-05-03 | 16097071 | ND |
| 2017-05-03 | 16097050 | ND |
| 2017-05-03 | 16096987 | ND |
| 2017-05-03 | 16097029 | ND |
| 2017-05-03 | 16097008 | ND |
| 2017-08-02 | 16568598 | ND |
| 2017-08-02 | 16568577 | ND |
| 2017-08-02 | 16568556 | ND |
| 2017-11-01 | 17025485 | ND |
| 2017-11-01 | 17025464 | ND |
| 2017-11-01 | 17025506 | ND |
| 2018-02-12 | 20180562 | ND |
| 2018-02-12 | 20180561 | ND |
| 2018-02-12 | 20180560 | ND |
| 2018-05-03 | 20181778 | ND |
| 2018-05-03 | 20181777 | ND |
| 2018-05-03 | 20181776 | ND |
| 2018-05-03 | 20181775 | ND |
| 2018-05-03 | 20181774 | ND |
| 2018-08-01 | 20182931 | ND |
| 2018-08-01 | 20182933 | ND |
| 2018-08-01 | 20182932 | ND |
| 2018-11-27 | 8114737-01 | ND |
| 2018-11-27 | 8114737-02 | ND |
| 2018-11-27 | 8114737-03 | ND |
| 2019-02-06 | 20190503 | ND |
| 2019-02-06 | 20190505 | ND |
| 2019-02-06 | 20190504 | ND |
| 2019-05-01 | 20191635 | ND |
| 2019-05-01 | 20191636 | ND |
| 2019-05-01 | 20191633 | ND |
| 2019-05-01 | 20191634 | ND |
| 2019-05-01 | 20191637 | ND |
| 2019-08-07 | 20193060 | ND |
| 2019-08-07 | 20193062 | ND |
| 2019-08-07 | 20193061 | ND |
| 2019-11-06 | 20194361 | ND |
| 2019-11-06 | 20194363 | ND |
| 2019-11-06 | 20194362 | ND |