Waste Disposal Inc is a superfund site located at 12731 E Los Nietos Rd, Santa Fe Springs, CA 90670. The Environmental Protection Agency (EPA) identifies sites such as Waste Disposal Inc 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. Waste Disposal Inc is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Waste Disposal Inc is considered one of the worst hazardous waste sites identified by the EPA.