trans-1,2-Dichloroethylene
City of Columbus
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 | 13 | 0 | ND |
| 2015 | ND | 21 | 0 | ND |
| 2016 | ND | 20 | 0 | ND |
| 2017 | ND | 21 | 0 | ND |
| 2018 | ND | 17 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-01-27 | 278476 | ND |
| 2014-04-07 | 293475 | ND |
| 2014-07-07 | 309738 | ND |
| 2014-08-11 | 310474 | ND |
| 2014-09-23 | 324189 | ND |
| 2014-09-23 | 324190 | ND |
| 2014-09-23 | 324187 | ND |
| 2014-09-23 | 324188 | ND |
| 2014-10-06 | 328594 | ND |
| 2014-10-27 | 332909 | ND |
| 2014-10-27 | 332910 | ND |
| 2014-10-27 | 332911 | ND |
| 2014-10-27 | 332912 | ND |
| 2015-01-05 | 343322 | ND |
| 2015-02-09 | 343323 | ND |
| 2015-03-02 | 348718 | ND |
| 2015-03-02 | 348719 | ND |
| 2015-03-02 | 348720 | ND |
| 2015-03-02 | 348721 | ND |
| 2015-04-01 | 353635 | ND |
| 2015-06-01 | 364957 | ND |
| 2015-06-01 | 364958 | ND |
| 2015-06-01 | 364959 | ND |
| 2015-06-01 | 364960 | ND |
| 2015-07-06 | 371054 | ND |
| 2015-09-08 | 378741 | ND |
| 2015-09-08 | 378743 | ND |
| 2015-09-08 | 378742 | ND |
| 2015-09-08 | 378740 | ND |
| 2015-10-05 | 391882 | ND |
| 2015-12-01 | 402126 | ND |
| 2015-12-01 | 402127 | ND |
| 2015-12-01 | 402128 | ND |
| 2015-12-01 | 402129 | ND |
| 2016-01-20 | ND | |
| 2016-02-29 | ND | |
| 2016-02-29 | ND | |
| 2016-02-29 | ND | |
| 2016-02-29 | ND | |
| 2016-04-11 | ND | |
| 2016-06-08 | ND | |
| 2016-06-08 | ND | |
| 2016-06-08 | ND | |
| 2016-06-08 | ND | |
| 2016-07-05 | ND | |
| 2016-09-06 | ND | |
| 2016-09-06 | ND | |
| 2016-09-06 | ND | |
| 2016-09-06 | ND | |
| 2016-11-07 | ND | |
| 2016-12-05 | ND | |
| 2016-12-05 | ND | |
| 2016-12-05 | ND | |
| 2016-12-05 | ND | |
| 2017-03-01 | ND | |
| 2017-03-06 | ND | |
| 2017-03-06 | ND | |
| 2017-03-06 | ND | |
| 2017-03-06 | ND | |
| 2017-04-10 | ND | |
| 2017-06-05 | ND | |
| 2017-06-05 | ND | |
| 2017-06-05 | ND | |
| 2017-06-05 | ND | |
| 2017-06-12 | ND | |
| 2017-09-06 | ND | |
| 2017-09-06 | ND | |
| 2017-09-06 | ND | |
| 2017-09-06 | ND | |
| 2017-09-11 | ND | |
| 2017-10-10 | ND | |
| 2017-12-04 | ND | |
| 2017-12-04 | ND | |
| 2017-12-04 | ND | |
| 2017-12-04 | ND | |
| 2018-01-03 | 530737 | ND |
| 2018-02-26 | 530738 | ND |
| 2018-03-05 | 534068 | ND |
| 2018-03-05 | 534067 | ND |
| 2018-03-05 | 534066 | ND |
| 2018-03-05 | 534065 | ND |
| 2018-04-02 | 541803 | ND |
| 2018-06-04 | 549786 | ND |
| 2018-06-04 | 549787 | ND |
| 2018-06-04 | 549788 | ND |
| 2018-06-04 | 549789 | ND |
| 2018-07-09 | 560150 | ND |
| 2018-09-04 | 568495 | ND |
| 2018-09-04 | 568496 | ND |
| 2018-09-04 | 568497 | ND |
| 2018-09-04 | 568498 | ND |
| 2018-10-15 | 577007 | ND |
| 2019-01-14 | 590554 | ND |
| 2019-04-01 | 602852 | ND |
| 2019-07-08 | 621112 | ND |
| 2019-07-15 | 623646 | ND |
| 2019-07-15 | 623645 | ND |
| 2019-10-07 | 638483 | ND |