Q. How do I contact the Pipeline and Hazardous Materials Safety Administration (PHMSA)?


Hazardous Material Emergency Immediately Call the National Response Center

  • Toll-free phone number (US): (800) 424-8802
  • Washington DC and foreign residents: (202) 267-2675 

Pipeline and Hazardous Materials Safety Administration (PHMSA) 

​PHMSA Office of Pipeline Safety

  • Webpage

  • Phone: (202) 366-4433 

  • Fax: (202) 366-3666 

  • Mail:

U.S. Department of Transportation
Pipeline and Hazardous Materials Safety Administration
East Building, 2nd Floor
1200 New Jersey Ave., SE
Washington, DC 20590

Hazardous Materials Information Center (Monday through Friday from 9:00 am to 5:00 pm EST)

  • Toll-free phone number (US): 1-800-HMR-4922 (1-800-467-4922)

  • Washington DC and international callers: (202) 366-4488

Questions about CNG Tanks and Cylinders

  • Contact Luis Figueroa,National Highway Traffic Safety Administration's Office of Vehicle Safety Compliance

  • Phone: (202) 366-5298

  • Email: Luis.Figueroa@dot.gov

Other Resources


  • Last Updated Nov 16, 2017
  • Views 228
  • Answered By David Martin

FAQ Actions

Was this helpful? 1   0

Contact Us

The Reference Librarians will be unavailable from Thursday November 23rd until Monday November 27th. You may still submit email questions and leave a voicemail for the librarians. We will reply as soon as possible. 

Can't find the answer you're looking for in the FAQs? Contact a Reference Librarian for help.