An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

About EPA

EPA Organization Chart

Office of the Administrator (AO)


Office of Air and Radiation (OAR)

Office of Chemical Safety and Pollution Prevention (OCSPP)

Office of the Chief Financial Officer (OCFO)

Office of Enforcement and Compliance Assurance (OECA)

Office of General Counsel (OGC)

Office of Inspector General (OIG)

Office of International and Tribal Affairs (OITA)

Office of Land and Emergency Management (OLEM)

Office of Mission Support (OMS) (formerly the Offices of Administration and Resources Management (OARM) and Environmental Information (OEI))

Office of Research and Development (ORD)

Office of Water (OW)

Regional Offices
Around the Nation

Region 1 / Boston

Serving CT, ME, MA, NH, RI, and VT
About Region 1
Region 1 Organization Chart

Region 2 / New York

Serving NJ, NY, Puerto Rico, and the U.S. Virgin Islands
About Region 2
Region 2 Organization Chart

Region 3 / Philadelphia

Serving DE, DC, MD, PA, VA, and WV
About Region 3
Region 3 Organization Chart

Region 4 / Atlanta

Serving AL, FL, GA, KY, MS, NC, SC, and TN
About Region 4
Region 4 Organization Chart

Region 5 / Chicago

Serving IL, IN, MI, MN, OH, and WI
About Region 5
Region 5 Organization Chart

Region 6 / Dallas

Serving AR, LA, NM, OK, and TX
About Region 6
Region 6 Organization Chart

Region 7 / Kansas City

Serving IA, KS, MO, and NE
About Region 7
Region 7 Organization Chart

Region 8 / Denver

Serving CO, MT, ND, SD, UT, and WY
About Region 8
Region 8 Organization Chart

Region 9 / San Francisco

Serving AZ, CA, HI, NV, American Samoa, Commonwealth of the Northern Mariana Islands, Federated States of Micronesia, Guam, Marshall Islands, and Republic of Palau
About Region 9
Region 9 Organization Chart

Region 10 / Seattle

Serving AK, ID, OR, and WA
206-553-1200 or 800-424-4372
About Region 10
Region 10 Organization Chart

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