Crystal Chemical Co is a superfund site located at 3502 Rogerdale Rd, Houston, TX 77042. The Environmental Protection Agency (EPA) identifies sites such as Crystal Chemical Co 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. Crystal Chemical Co is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Crystal Chemical Co is considered one of the worst hazardous waste sites identified by the EPA.