trans-1,2-Dichloroethylene
North Penn 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.
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 | 48 | 0 | ND |
| 2019 | ND | 45 | 0 | ND |
| 2020 | ND | 49 | 0 | ND |
| 2021 | ND | 38 | 0 | ND |
| 2022 | ND | 26 | 0 | ND |
| 2023 | ND | 18 | 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 |
|---|---|---|
| 2018-01-22 | 20180293 | ND |
| 2018-01-22 | 20180294 | ND |
| 2018-01-22 | 20180295 | ND |
| 2018-01-22 | 20180296 | ND |
| 2018-02-05 | 20180455 | ND |
| 2018-02-05 | 20180456 | ND |
| 2018-02-05 | 20180452 | ND |
| 2018-02-05 | 20180453 | ND |
| 2018-02-05 | 20180454 | ND |
| 2018-02-05 | 20180457 | ND |
| 2018-03-20 | 20181073 | ND |
| 2018-03-20 | 20181074 | ND |
| 2018-03-20 | 20181075 | ND |
| 2018-03-20 | 20181076 | ND |
| 2018-04-16 | 20181445 | ND |
| 2018-04-16 | 20181446 | ND |
| 2018-04-16 | 20181448 | ND |
| 2018-04-16 | 20181447 | ND |
| 2018-05-02 | 20181740 | ND |
| 2018-05-02 | 20181741 | ND |
| 2018-05-02 | 20181744 | ND |
| 2018-05-02 | 20181742 | ND |
| 2018-05-02 | 20181743 | ND |
| 2018-06-18 | 20182322 | ND |
| 2018-06-18 | 20182324 | ND |
| 2018-06-18 | 20182325 | ND |
| 2018-06-18 | 20182323 | ND |
| 2018-06-18 | 20182326 | ND |
| 2018-06-18 | 20182327 | ND |
| 2018-07-16 | 20182699 | ND |
| 2018-07-16 | 20182700 | ND |
| 2018-07-16 | 20182701 | ND |
| 2018-08-01 | 20182922 | ND |
| 2018-08-01 | 20182923 | ND |
| 2018-08-01 | 20182920 | ND |
| 2018-08-01 | 20182921 | ND |
| 2018-08-01 | 20182924 | ND |
| 2018-09-05 | 20183429 | ND |
| 2018-09-05 | 20183431 | ND |
| 2018-09-05 | 20183430 | ND |
| 2018-09-05 | 20183432 | ND |
| 2018-10-15 | 20183924 | ND |
| 2018-10-15 | 20183926 | ND |
| 2018-10-15 | 20183925 | ND |
| 2018-12-03 | 8121626-01 | ND |
| 2018-12-03 | 8121626-03 | ND |
| 2018-12-03 | 8121626-02 | ND |
| 2018-12-10 | 8122542-01 | ND |
| 2019-01-21 | 20190220 | ND |
| 2019-02-04 | 20190410 | ND |
| 2019-02-04 | 20190411 | ND |
| 2019-02-04 | 20190409 | ND |
| 2019-02-04 | 20190412 | ND |
| 2019-02-07 | 20190528 | ND |
| 2019-03-04 | 20190828 | ND |
| 2019-03-04 | 20190829 | ND |
| 2019-03-04 | 20190830 | ND |
| 2019-04-17 | 20191516 | ND |
| 2019-04-17 | 20191518 | ND |
| 2019-04-17 | 20191517 | ND |
| 2019-05-02 | 20191674 | ND |
| 2019-05-02 | 20191675 | ND |
| 2019-05-02 | 20191678 | ND |
| 2019-05-02 | 20191676 | ND |
| 2019-05-02 | 20191677 | ND |
| 2019-07-15 | 20192723 | ND |
| 2019-07-15 | 20192724 | ND |
| 2019-07-15 | 20192727 | ND |
| 2019-07-15 | 20192728 | ND |
| 2019-07-15 | 20192725 | ND |
| 2019-07-15 | 20192726 | ND |
| 2019-08-05 | 20192977 | ND |
| 2019-08-05 | 20192978 | ND |
| 2019-08-05 | 20192976 | ND |
| 2019-08-05 | 20192979 | ND |
| 2019-09-04 | 20193493 | ND |
| 2019-09-04 | 20193494 | ND |
| 2019-09-04 | 20193495 | ND |
| 2019-09-04 | 20193496 | ND |
| 2019-10-21 | 20194146 | ND |
| 2019-10-21 | 20194147 | ND |
| 2019-10-21 | 20194148 | ND |
| 2019-11-04 | 20194264 | ND |
| 2019-11-04 | 20194265 | ND |
| 2019-11-04 | 20194267 | ND |
| 2019-11-04 | 20194266 | ND |
| 2019-11-04 | 20194268 | ND |
| 2019-11-04 | 20194269 | ND |
| 2019-12-02 | 20194693 | ND |
| 2019-12-02 | 20194694 | ND |
| 2019-12-02 | 20194696 | ND |
| 2019-12-02 | 20194697 | ND |
| 2019-12-02 | 20194695 | ND |
| 2020-01-20 | 21503059.00 | ND |
| 2020-01-20 | 21503080.00 | ND |
| 2020-01-20 | 21502996.00 | ND |
| 2020-01-20 | 21503017.00 | ND |
| 2020-01-20 | 21503038.00 | ND |
| 2020-02-03 | 21667083.00 | ND |
| 2020-02-03 | 21667104.00 | ND |
| 2020-02-03 | 21667125.00 | ND |
| 2020-03-02 | 21847020.00 | ND |
| 2020-03-02 | 21847041.00 | ND |
| 2020-03-02 | 21847062.00 | ND |
| 2020-03-02 | 21847083.00 | ND |
| 2020-05-05 | 22215273.00 | ND |
| 2020-05-05 | 22215294.00 | ND |
| 2020-05-05 | 22215336.00 | ND |
| 2020-05-05 | 22215357.00 | ND |
| 2020-05-05 | 22215315.00 | ND |
| 2020-06-01 | 22416284.00 | ND |
| 2020-06-01 | 22416305.00 | ND |
| 2020-06-01 | 22416347.00 | ND |
| 2020-06-01 | 22416368.00 | ND |
| 2020-06-01 | 22416326.00 | ND |
| 2020-06-01 | 22416389.00 | ND |
| 2020-07-20 | 22607577.00 | ND |
| 2020-07-20 | 22607598.00 | ND |
| 2020-07-20 | 22607514.00 | ND |
| 2020-07-20 | 22607535.00 | ND |
| 2020-07-20 | 22607556.00 | ND |
| 2020-08-03 | 22608154.00 | ND |
| 2020-08-03 | 22608175.00 | ND |
| 2020-08-03 | 22608196.00 | ND |
| 2020-08-03 | 22608217.00 | ND |
| 2020-09-02 | 22999418.00 | ND |
| 2020-09-02 | 22999439.00 | ND |
| 2020-09-02 | 22999481.00 | ND |
| 2020-09-02 | 22999502.00 | ND |
| 2020-09-02 | 22999460.00 | ND |
| 2020-09-02 | 22999523.00 | ND |
| 2020-10-19 | 23183101.00 | ND |
| 2020-10-19 | 23183122.00 | ND |
| 2020-10-19 | 23183143.00 | ND |
| 2020-11-02 | 23362140.00 | ND |
| 2020-11-02 | 23362161.00 | ND |
| 2020-11-02 | 23362182.00 | ND |
| 2020-11-02 | 23362203.00 | ND |
| 2020-12-02 | 23537602.00 | ND |
| 2020-12-02 | 23537623.00 | ND |
| 2020-12-02 | 23537644.00 | ND |
| 2020-12-02 | 23537665.00 | ND |
| 2021-01-18 | 23712799.00 | ND |
| 2021-01-18 | 23712820.00 | ND |
| 2021-01-18 | 23712778.00 | ND |
| 2021-02-05 | 23888814.00 | ND |
| 2021-02-05 | 23888856.00 | ND |
| 2021-02-05 | 23888835.00 | ND |
| 2021-03-01 | 24060132.00 | ND |
| 2021-03-01 | 24060153.00 | ND |
| 2021-03-01 | 24060174.00 | ND |
| 2021-03-09 | 24060111.00 | ND |
| 2021-04-19 | 24247772.00 | ND |
| 2021-04-19 | 24247793.00 | ND |
| 2021-05-17 | 24438765.00 | ND |
| 2021-05-17 | 24438786.00 | ND |
| 2021-05-17 | 24438807.00 | ND |
| 2021-06-02 | 24638236.00 | ND |
| 2021-06-02 | 24638257.00 | ND |
| 2021-06-02 | 24638278.00 | ND |
| 2021-06-02 | 24638299.00 | ND |
| 2021-07-21 | 24829608.00 | ND |
| 2021-07-21 | 24829629.00 | ND |
| 2021-07-21 | 24829546.00 | ND |
| 2021-07-21 | 24829567.00 | ND |
| 2021-07-21 | 24829587.00 | ND |
| 2021-08-03 | 24829651.00 | ND |
| 2021-08-03 | 24829672.00 | ND |
| 2021-08-03 | 24829693.00 | ND |
| 2021-08-03 | 24829735.00 | ND |
| 2021-08-03 | 24829714.00 | ND |
| 2021-09-08 | 25220385.00 | ND |
| 2021-09-08 | 25220406.00 | ND |
| 2021-09-08 | 25220427.00 | ND |
| 2021-10-18 | 25405352.00 | ND |
| 2021-10-19 | 25405331.00 | ND |
| 2021-10-19 | 25405373.00 | ND |
| 2021-10-19 | 25405394.00 | ND |
| 2021-11-01 | 25588162.00 | ND |
| 2021-12-06 | 25764728.00 | ND |
| 2022-01-17 | 25942748.00 | ND |
| 2022-01-17 | 25942769.00 | ND |
| 2022-01-17 | 25942727.00 | ND |
| 2022-01-17 | 25942790.00 | ND |
| 2022-02-09 | 26117639.00 | ND |
| 2022-02-09 | 26117660.00 | ND |
| 2022-02-09 | 26117681.00 | ND |
| 2022-02-09 | 26117702.00 | ND |
| 2022-03-02 | 26287451.00 | ND |
| 2022-05-04 | 26648503.00 | ND |
| 2022-05-04 | 26648524.00 | ND |
| 2022-05-04 | 26648545.00 | ND |
| 2022-05-16 | 26649189.00 | ND |
| 2022-05-16 | 26649210.00 | ND |
| 2022-05-16 | 26649231.00 | ND |
| 2022-06-06 | 26842864.00 | ND |
| 2022-07-20 | 27037773.00 | ND |
| 2022-08-03 | 27234064.00 | ND |
| 2022-08-03 | 27234085.00 | ND |
| 2022-08-03 | 27234043.00 | ND |
| 2022-08-03 | 27234106.00 | ND |
| 2022-10-17 | 27641623.00 | ND |
| 2022-10-17 | 27641644.00 | ND |
| 2022-10-17 | 27641665.00 | ND |
| 2022-11-02 | 27823013.00 | ND |
| 2022-12-05 | 27998850.00 | ND |
| 2023-01-18 | 28172961.00 | ND |
| 2023-01-18 | 28172982.00 | ND |
| 2023-01-18 | 28172940.00 | ND |
| 2023-01-19 | 28173003.00 | ND |
| 2023-02-02 | 28349545.00 | ND |
| 2023-03-06 | 28521267.00 | ND |
| 2023-03-06 | 28521288.00 | ND |
| 2023-04-12 | 28702332.00 | ND |
| 2023-06-21 | 29108543.00 | ND |
| 2023-07-19 | 29302136.00 | ND |
| 2023-07-19 | 29302157.00 | ND |
| 2023-07-19 | 29302115.00 | ND |
| 2023-08-02 | 29497562.00 | ND |
| 2023-09-13 | 29700124.00 | ND |
| 2023-09-13 | 29700145.00 | ND |
| 2023-10-12 | 29886777.00 | ND |
| 2023-11-01 | 30071596.00 | ND |
| 2023-12-04 | 30245966.00 | ND |