Koppers Co Inc Newport Plant is a superfund site located at Foot Of Lindburg St, Newport, DE 19804. The Environmental Protection Agency (EPA) identifies sites such as Koppers Co Inc Newport Plant 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. Koppers Co Inc Newport Plant is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Koppers Co Inc Newport Plant is considered one of the worst hazardous waste sites identified by the EPA.