Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

East Alton

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.593 ppb440.540 ppb - 0.640 ppb
20190.278 ppb42ND - 0.600 ppb
20200.808 ppb440.700 ppb - 0.900 ppb
20210.653 ppb43ND - 1.000 ppb
20220.490 ppb42ND - 1.10 ppb
20230.755 ppb43ND - 1.40 ppb

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
2018-01-168013018-010.610 ppb
2018-04-038041291-010.580 ppb
2018-08-288085787-010.640 ppb
2018-10-228105047-010.540 ppb
2019-01-229014063-010.510 ppb
2019-04-299050017-010.600 ppb
2019-07-249075426-01ND
2019-10-229105187-01ND
2020-01-070011946-010.870 ppb
2020-04-290050025-010.760 ppb
2020-08-240085846-010.700 ppb
2020-10-060101784-010.900 ppb
2021-01-25EA04364-010.770 ppb
2021-04-20ED04366-010.840 ppb
2021-07-20EG04577-01ND
2021-10-26EJ05305-011.000 ppb
2022-01-11FA02423-010.860 ppb
2022-04-19FD03918-01ND
2022-08-01FH00772-011.10 ppb
2022-10-25FJ04962-01ND
2023-01-23GA04262-010.840 ppb
2023-04-25GD04539-010.780 ppb
2023-07-31GH00321-01ND
2023-10-17GJ03547-011.40 ppb