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Visiting the Pacific Southwest (Region 9) Office

Related Content
  • EPA Region 9 (Pacific Southwest)
  • Contact EPA Region 9

EPA’s Pacific Southwest (Region 9) implements and enforces federal environmental laws in Arizona, California, Hawaii, Nevada, the Pacific Islands, and 148 Tribal Nations.

The main office of EPA’s Pacific Southwest Region (Region 9) is located at 75 Hawthorne Street in the South of Market area of downtown San Francisco.

The public may visit us for conferences, meetings, and to use the Region 9 Environmental Information Center (Library Services).

All visitors are required to show recognizable state or federal identification (such as a state-issued ID, driver’s license, passport or military ID) and pass through airport-style security screening.

Main Office Transit

The San Francisco Municipal Transportation Authority Trip Planner and 511.org can provide transit options for our office at 75 Hawthorne Street, San Francisco.

The office is about .4 miles (8 minute walk) from the Montgomery Street Station serving Bay Area Rapid Transit (BART) and San Francisco Muni. There are also numerous bus lines. The closest CalTrain station is the San Francisco Station at Fourth and King Streets, which is a 1 mile (20 minute walk).

Office Addresses

Main Office
U.S. EPA Pacific Southwest, Region 9
75 Hawthorne St.
San Francisco, CA 94105
Toll Free: (866)-EPA-WEST
Direct: (415) 947-8000

Southern California Field Office
600 Wilshire Blvd., Suite 940
Los Angeles, CA 90017
(213) 244-1800

San Diego Border Office
880 Front St., Suite 3210
San Diego, CA 92101
(619) 235-4765

Pacific Islands Office
300 Ala Moana Blvd., Room 5-152
Honolulu, HI 96850
(808) 541-2710

Flagstaff Field Office
2255 N Gemini Rd.
Flagstaff, AZ 86001
(866)-EPA-WEST

About EPA

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Last updated on May 28, 2025
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