General

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Western Region

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About the Office

The Western Regional Hazardous Materials Office is based in Ontario, California. This office is charged with overseeing the safe and secure movement of daily shipments of hazardous materials by all modes of transportation.

The Western Regional Pipeline Safety office is based in Lakewood, Colorado. This office is charged with ensuring the safe, reliable, and environmentally sound operation of the nation's pipeline infrastructure.

The area of responsibility for this region is listed below; however, the jurisdiction of PHMSA staff is nationwide and not limited to their regional area of responsibility.

States: Alaska, American Samoa, Arizona, California, Colorado, Commonwealth of Northern Mariana Islands, Guam, Hawaii, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming

Contact Information

Western Region Contact Information
PHMSA Hazardous Materials Safety
Western Region Office
PHMSA Pipeline Safety
Western Region Office
3401 Centrelake Drive, Suite 550B
Ontario, CA  91761
909-937-3279
909-390-5142 (Fax)
12300 W. Dakota Avenue, Suite 110
Lakewood, CO  80228
720-963-3160 
720-963-3161 (Fax)

Management

Western Region Management
PHMSA Hazardous Materials Safety
Western Region Enforcement Office
PHMSA Pipeline Safety
Western Region Office
Updated: Friday, July 14, 2017