PHMSA's Mission

At PHMSA we protect people and the environment from the risks inherent in transportation of hazardous materials - by pipeline and other modes of transportation.  Read more

Pipeline Safety Office

The Office of Pipeline Safety is the Federal safety authority for the nation's 2.6 million miles of natural gas and hazardous liquid pipelines.  Read more

Hazardous Materials Safety Office

The Office of Hazardous Materials Safety is the Federal safety authority for the transportation of hazardous materials by air, rail, highway, and water. Information here includes guidance.  Read more