trans-1,2-Dichloroethylene
Northampton Bucks County 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 |
|---|---|---|---|---|
| 2014 | ND | 23 | 0 | ND |
| 2015 | ND | 15 | 0 | ND |
| 2016 | ND | 11 | 0 | ND |
| 2017 | ND | 21 | 0 | ND |
| 2018 | ND | 11 | 0 | ND |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2014-02-25 | L4951922-1 | ND |
| 2014-02-25 | L4951918-1 | ND |
| 2014-05-20 | L4690565-1 | ND |
| 2014-05-20 | L4799412-1 | ND |
| 2014-07-17 | L5163463-2 | ND |
| 2014-07-17 | L5163463-1 | ND |
| 2014-07-17 | L5163463-13 | ND |
| 2014-07-17 | L5163463-15 | ND |
| 2014-07-17 | L5163463-14 | ND |
| 2014-07-17 | L5163463-6 | ND |
| 2014-07-17 | L5163463-12 | ND |
| 2014-07-17 | L5163463-10 | ND |
| 2014-07-17 | L5163463-11 | ND |
| 2014-07-17 | L5163463-9 | ND |
| 2014-07-17 | L5163463-8 | ND |
| 2014-07-17 | L5163463-7 | ND |
| 2014-07-17 | L5163463-4 | ND |
| 2014-07-17 | L5163463-3 | ND |
| 2014-07-17 | L5163463-5 | ND |
| 2014-08-15 | L4460454-1 | ND |
| 2014-08-15 | L4359849-1 | ND |
| 2014-12-04 | L5352437-1 | ND |
| 2014-12-04 | L5352436-1 | ND |
| 2015-02-10 | 12390432 | ND |
| 2015-02-10 | 12390486 | ND |
| 2015-05-11 | 12738488 | ND |
| 2015-05-11 | 12738434 | ND |
| 2015-07-09 | 13859377 | ND |
| 2015-07-09 | 13859323 | ND |
| 2015-07-09 | 13859431 | ND |
| 2015-08-19 | 13123830 | ND |
| 2015-08-19 | 13123884 | ND |
| 2015-08-28 | 13124405 | ND |
| 2015-11-20 | 13503532 | ND |
| 2015-11-20 | 13503586 | ND |
| 2015-11-20 | 13503478 | ND |
| 2015-11-20 | 13503424 | ND |
| 2015-11-20 | 13503370 | ND |
| 2016-02-23 | 13975159 | ND |
| 2016-02-23 | 13975106 | ND |
| 2016-02-23 | 13975053 | ND |
| 2016-02-23 | 13975000 | ND |
| 2016-02-23 | 13974947 | ND |
| 2016-05-24 | 14237907 | ND |
| 2016-07-21 | 14555718 | ND |
| 2016-07-21 | 14555770 | ND |
| 2016-07-21 | 14555666 | ND |
| 2016-07-21 | 14555614 | ND |
| 2016-08-30 | 14892510 | ND |
| 2017-02-27 | 15644174 | ND |
| 2017-06-07 | 16243963 | ND |
| 2017-08-01 | 16551926 | ND |
| 2017-08-01 | 16551978 | ND |
| 2017-08-01 | 16552082 | ND |
| 2017-08-01 | 16551770 | ND |
| 2017-08-01 | 16551822 | ND |
| 2017-08-01 | 16551874 | ND |
| 2017-08-01 | 16552030 | ND |
| 2017-08-01 | 16552134 | ND |
| 2017-08-17 | 16553160 | ND |
| 2017-08-17 | 16553004 | ND |
| 2017-08-17 | 16553264 | ND |
| 2017-08-17 | 16553056 | ND |
| 2017-08-17 | 16553108 | ND |
| 2017-08-17 | 16553212 | ND |
| 2017-08-24 | 16552820 | ND |
| 2017-08-24 | 16552872 | ND |
| 2017-08-24 | 16552716 | ND |
| 2017-08-24 | 16552924 | ND |
| 2017-08-24 | 16552768 | ND |
| 2018-01-29 | L6996345-1 | ND |
| 2018-05-22 | 8013250-02 | ND |
| 2018-05-22 | 8013250-01 | ND |
| 2018-07-23 | 8019104-04 | ND |
| 2018-07-23 | 8019104-03 | ND |
| 2018-07-23 | 8019104-02 | ND |
| 2018-07-23 | 8019104-01 | ND |
| 2018-08-27 | 8024440-05 | ND |
| 2018-08-27 | 8024440-01 | ND |
| 2018-11-20 | 8028289-05RE | ND |
| 2018-11-20 | 8028289-01 | ND |
| 2019-02-26 | 9006185-05 | ND |
| 2019-02-26 | 9006185-01 | ND |
| 2019-04-29 | 9009352-01 | ND |
| 2019-04-29 | 9010209-01 | ND |
| 2019-04-29 | 9010209-04 | ND |
| 2019-04-29 | 9010209-02 | ND |
| 2019-04-29 | 9010209-03 | ND |
| 2019-04-29 | 9009352-05 | ND |
| 2019-07-17 | 9021348-01 | ND |
| 2019-07-17 | 9021348-05 | ND |
| 2019-10-08 | 9034544-05 | ND |
| 2019-10-08 | 9034544-01 | ND |