Williams Pipe Line Co Dubuque is a superfund site located at Hwy 151 S, Dubuque, IA 52003. The Environmental Protection Agency (EPA) identifies sites such as Williams Pipe Line Co Dubuque 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. Williams Pipe Line Co Dubuque is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.