Tennessee Thermo Gas Company is a superfund site located at Illinois Route 136, Tennessee, IL 62374. The Environmental Protection Agency (EPA) identifies sites such as Tennessee Thermo Gas Company because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. Tennessee Thermo Gas Company is currently registered as an Active superfund site by the EPA. However, it is not on the NPL (National Priorities List), which means the EPA does not consider it one of the nation's most hazardous waste sites.