trans-1,2-Dichloroethylene
Collegeville Trappe Joint Public Works Department
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 | 28 | 0 | ND |
| 2019 | ND | 28 | 0 | ND |
| 2020 | ND | 40 | 0 | ND |
| 2021 | ND | 40 | 0 | ND |
| 2022 | ND | 40 | 0 | ND |
| 2023 | ND | 39 | 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 | 20180311 | ND |
| 2018-01-22 | 20180312 | ND |
| 2018-01-22 | 20180313 | ND |
| 2018-01-22 | 20180314 | ND |
| 2018-01-22 | 20180315 | ND |
| 2018-01-22 | 20180316 | ND |
| 2018-01-22 | 20180317 | ND |
| 2018-04-18 | 20181575 | ND |
| 2018-04-18 | 20181576 | ND |
| 2018-04-18 | 20181577 | ND |
| 2018-04-18 | 20181578 | ND |
| 2018-04-18 | 20181579 | ND |
| 2018-04-18 | 20181580 | ND |
| 2018-04-18 | 20181581 | ND |
| 2018-07-16 | 20182718 | ND |
| 2018-07-16 | 20182719 | ND |
| 2018-07-16 | 20182720 | ND |
| 2018-07-16 | 20182721 | ND |
| 2018-07-16 | 20182722 | ND |
| 2018-07-16 | 20182723 | ND |
| 2018-07-16 | 20182724 | ND |
| 2018-10-15 | 20183946 | ND |
| 2018-10-15 | 20183947 | ND |
| 2018-10-15 | 20183948 | ND |
| 2018-10-15 | 20183949 | ND |
| 2018-10-15 | 20183950 | ND |
| 2018-10-15 | 20183951 | ND |
| 2018-10-15 | 20183952 | ND |
| 2019-01-23 | 20190306 | ND |
| 2019-01-23 | 20190307 | ND |
| 2019-01-23 | 20190308 | ND |
| 2019-01-23 | 20190309 | ND |
| 2019-01-23 | 20190310 | ND |
| 2019-01-23 | 20190311 | ND |
| 2019-01-23 | 20190312 | ND |
| 2019-04-15 | 20191439 | ND |
| 2019-04-15 | 20191440 | ND |
| 2019-04-15 | 20191441 | ND |
| 2019-04-15 | 20191442 | ND |
| 2019-04-15 | 20191443 | ND |
| 2019-04-15 | 20191444 | ND |
| 2019-04-15 | 20191445 | ND |
| 2019-07-15 | 20192706 | ND |
| 2019-07-15 | 20192707 | ND |
| 2019-07-15 | 20192708 | ND |
| 2019-07-15 | 20192709 | ND |
| 2019-07-15 | 20192710 | ND |
| 2019-07-15 | 20192711 | ND |
| 2019-07-15 | 20192712 | ND |
| 2019-10-21 | 20194150 | ND |
| 2019-10-21 | 20194151 | ND |
| 2019-10-21 | 20194152 | ND |
| 2019-10-21 | 20194153 | ND |
| 2019-10-21 | 20194154 | ND |
| 2019-10-21 | 20194155 | ND |
| 2019-10-21 | 20194156 | ND |
| 2020-01-20 | 21500899.00 | ND |
| 2020-01-20 | 21500920.00 | ND |
| 2020-01-20 | 21500941.00 | ND |
| 2020-01-20 | 21500962.00 | ND |
| 2020-01-20 | 21500983.00 | ND |
| 2020-01-20 | 21501004.00 | ND |
| 2020-03-02 | 21845021.00 | ND |
| 2020-03-02 | 21845042.00 | ND |
| 2020-03-02 | 21845063.00 | ND |
| 2020-03-02 | 21845084.00 | ND |
| 2020-05-18 | 22213322.00 | ND |
| 2020-05-18 | 22213343.00 | ND |
| 2020-05-18 | 22213364.00 | ND |
| 2020-05-18 | 22213385.00 | ND |
| 2020-05-18 | 22213406.00 | ND |
| 2020-05-18 | 22213427.00 | ND |
| 2020-05-18 | 22213448.00 | ND |
| 2020-06-08 | 22414012.00 | ND |
| 2020-06-08 | 22414033.00 | ND |
| 2020-06-08 | 22414054.00 | ND |
| 2020-08-03 | 22605632.00 | ND |
| 2020-08-03 | 22605653.00 | ND |
| 2020-08-03 | 22605674.00 | ND |
| 2020-08-03 | 22605695.00 | ND |
| 2020-08-03 | 22605716.00 | ND |
| 2020-08-17 | 22797383.00 | ND |
| 2020-08-17 | 22797404.00 | ND |
| 2020-08-17 | 22797425.00 | ND |
| 2020-08-17 | 22797446.00 | ND |
| 2020-08-17 | 22797467.00 | ND |
| 2020-10-19 | 23180752.00 | ND |
| 2020-10-19 | 23180773.00 | ND |
| 2020-10-19 | 23180794.00 | ND |
| 2020-10-19 | 23180815.00 | ND |
| 2020-10-19 | 23180836.00 | ND |
| 2020-10-19 | 23180857.00 | ND |
| 2020-11-02 | 23360572.00 | ND |
| 2020-11-02 | 23360593.00 | ND |
| 2020-11-02 | 23360614.00 | ND |
| 2020-11-02 | 23360635.00 | ND |
| 2021-01-18 | 23711043.00 | ND |
| 2021-01-18 | 23711064.00 | ND |
| 2021-01-18 | 23711085.00 | ND |
| 2021-01-18 | 23711106.00 | ND |
| 2021-01-18 | 23711127.00 | ND |
| 2021-02-03 | 23887123.00 | ND |
| 2021-02-03 | 23887144.00 | ND |
| 2021-02-03 | 23887165.00 | ND |
| 2021-02-03 | 23887186.00 | ND |
| 2021-03-22 | 24058530.00 | ND |
| 2021-04-19 | 24246026.00 | ND |
| 2021-04-19 | 24246047.00 | ND |
| 2021-04-19 | 24246068.00 | ND |
| 2021-04-19 | 24246089.00 | ND |
| 2021-04-19 | 24246110.00 | ND |
| 2021-04-19 | 24246131.00 | ND |
| 2021-05-17 | 24436785.00 | ND |
| 2021-05-17 | 24436806.00 | ND |
| 2021-05-17 | 24436827.00 | ND |
| 2021-05-17 | 24436848.00 | ND |
| 2021-08-02 | 24827174.00 | ND |
| 2021-08-02 | 24827195.00 | ND |
| 2021-08-02 | 24827216.00 | ND |
| 2021-08-02 | 24827237.00 | ND |
| 2021-08-16 | 25021290.00 | ND |
| 2021-08-16 | 25021311.00 | ND |
| 2021-08-16 | 25021332.00 | ND |
| 2021-08-16 | 25021353.00 | ND |
| 2021-08-16 | 25021374.00 | ND |
| 2021-08-16 | 25021395.00 | ND |
| 2021-10-18 | 25402987.00 | ND |
| 2021-10-18 | 25403008.00 | ND |
| 2021-10-18 | 25403029.00 | ND |
| 2021-10-18 | 25403050.00 | ND |
| 2021-10-18 | 25403071.00 | ND |
| 2021-10-18 | 25403092.00 | ND |
| 2021-11-01 | 25586583.00 | ND |
| 2021-11-01 | 25586604.00 | ND |
| 2021-11-01 | 25586625.00 | ND |
| 2021-11-01 | 25586646.00 | ND |
| 2022-01-17 | 25941005.00 | ND |
| 2022-01-17 | 25941026.00 | ND |
| 2022-01-17 | 25941047.00 | ND |
| 2022-01-17 | 25941068.00 | ND |
| 2022-01-17 | 25941089.00 | ND |
| 2022-01-17 | 25941110.00 | ND |
| 2022-02-07 | 26116017.00 | ND |
| 2022-02-07 | 26116038.00 | ND |
| 2022-02-07 | 26116059.00 | ND |
| 2022-02-07 | 26116080.00 | ND |
| 2022-04-18 | 26462321.00 | ND |
| 2022-04-18 | 26462342.00 | ND |
| 2022-04-18 | 26462363.00 | ND |
| 2022-04-18 | 26462384.00 | ND |
| 2022-04-18 | 26462405.00 | ND |
| 2022-04-18 | 26462426.00 | ND |
| 2022-05-02 | 26646910.00 | ND |
| 2022-05-02 | 26646931.00 | ND |
| 2022-05-02 | 26646952.00 | ND |
| 2022-05-02 | 26646973.00 | ND |
| 2022-07-18 | 27035698.00 | ND |
| 2022-07-18 | 27035719.00 | ND |
| 2022-07-18 | 27035740.00 | ND |
| 2022-07-18 | 27035761.00 | ND |
| 2022-07-18 | 27035782.00 | ND |
| 2022-07-18 | 27035803.00 | ND |
| 2022-08-01 | 27232422.00 | ND |
| 2022-08-01 | 27232443.00 | ND |
| 2022-08-01 | 27232464.00 | ND |
| 2022-08-01 | 27232485.00 | ND |
| 2022-10-17 | 27639856.00 | ND |
| 2022-10-17 | 27639877.00 | ND |
| 2022-10-17 | 27639898.00 | ND |
| 2022-10-17 | 27639919.00 | ND |
| 2022-10-17 | 27639940.00 | ND |
| 2022-10-17 | 27639961.00 | ND |
| 2022-11-07 | 27821394.00 | ND |
| 2022-11-07 | 27821415.00 | ND |
| 2022-11-07 | 27821436.00 | ND |
| 2022-11-07 | 27821457.00 | ND |
| 2023-01-23 | 28171114.00 | ND |
| 2023-01-23 | 28171135.00 | ND |
| 2023-01-23 | 28171156.00 | ND |
| 2023-01-23 | 28171177.00 | ND |
| 2023-02-06 | 28348079.00 | ND |
| 2023-02-06 | 28348100.00 | ND |
| 2023-02-06 | 28348121.00 | ND |
| 2023-02-06 | 28348142.00 | ND |
| 2023-02-06 | 28348163.00 | ND |
| 2023-02-06 | 28348184.00 | ND |
| 2023-04-17 | 28700399.00 | ND |
| 2023-04-17 | 28700420.00 | ND |
| 2023-04-17 | 28700441.00 | ND |
| 2023-04-17 | 28700462.00 | ND |
| 2023-04-17 | 28700483.00 | ND |
| 2023-04-17 | 28700504.00 | ND |
| 2023-05-22 | 28899033.00 | ND |
| 2023-05-22 | 28899034.00 | ND |
| 2023-05-22 | 28899035.00 | ND |
| 2023-05-22 | 28899036.00 | ND |
| 2023-07-24 | 29300398.00 | ND |
| 2023-07-24 | 29300419.00 | ND |
| 2023-07-24 | 29300440.00 | ND |
| 2023-07-24 | 29300461.00 | ND |
| 2023-07-24 | 29300482.00 | ND |
| 2023-07-24 | 29300503.00 | ND |
| 2023-08-07 | 29495525.00 | ND |
| 2023-08-07 | 29495546.00 | ND |
| 2023-08-07 | 29495567.00 | ND |
| 2023-08-07 | 29495588.00 | ND |
| 2023-10-16 | 29885093.00 | ND |
| 2023-10-16 | 29885114.00 | ND |
| 2023-10-16 | 29885135.00 | ND |
| 2023-10-16 | 29885156.00 | ND |
| 2023-10-16 | 29885177.00 | ND |
| 2023-10-16 | 29885198.00 | ND |
| 2023-11-06 | 30069951.00 | ND |
| 2023-11-06 | 30069972.00 | ND |
| 2023-11-06 | 30069993.00 | ND |