An official website of the United States government Here’s how you know Menu Search Search About EPA CONTACT US EPA Organization Chart Office of the Administrator (AO) 202-564-4700 About the Office of the Administrator AO Organization Chart Headquarters Offices Office of Air and Radiation (OAR) 202-564-7404 About the Office of Air and Radiation OAR Organization Chart Office of Chemical Safety and Pollution Prevention (OCSPP) 202-564-2902 About the Office of Chemical Safety and Pollution Prevention OCSPP Organization Chart Office of the Chief Financial Officer (OCFO) 202-564-1151 About the Office of the Chief Financial Officer OCFO Organization Chart Office of Enforcement and Compliance Assurance (OECA) 202-564-2440 About the Office of Enforcement and Compliance Assurance OECA Organization Chart Office of General Counsel (OGC) 202-564-8040 About the Office of General Counsel OGC Organization Chart Office of Inspector General (OIG) 202-566-0847 About the Office of Inspector General OIG Organization Chart Office of International and Tribal Affairs (OITA) 202-564-6600 About the Office of International and Tribal Affairs OITA Organization Chart Office of Land and Emergency Management (OLEM) 202-566-0200 About the Office of Land and Emergency Management OLEM Organization Chart Office of Mission Support (OMS) 202-564-4600 About the Office of Mission Support OMS Organization Chart Office of Research and Development (ORD) 202-564-6620 About the Office of Research and Development ORD Organization Chart Office of Water (OW) 202-564-5700 About the Office of Water Regional Offices Around the Nation Region 1 / Boston Serving CT, ME, MA, NH, RI, and VT 617-918-1010 About Region 1 Region 1 Organization Chart Region 2 / New York Serving NJ, NY, Puerto Rico, and the U.S. Virgin Islands 212-637-5000 About Region 2 Region 2 Organization Chart Region 3 / Philadelphia Serving DE, DC, MD, PA, VA, and WV 215-814-5000 About Region 3 Region 3 Organization Chart Region 4 / Atlanta Serving AL, FL, GA, KY, MS, NC, SC, and TN 404-562-9900 About Region 4 Region 4 Organization Chart Region 5 / Chicago Serving IL, IN, MI, MN, OH, and WI 312-886-3000 About Region 5 Region 5 Organization Chart Region 6 / Dallas Serving AR, LA, NM, OK, and TX 214-665-2200 About Region 6 Region 6 Organization Chart Region 7 / Kansas City Serving IA, KS, MO, and NE 913-551-7003 About Region 7 Region 7 Organization Chart Region 8 / Denver Serving CO, MT, ND, SD, UT, and WY 303-312-6312 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 415-947-8700 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 About EPA Home EPA History EPA Organization Chart Greening EPA Facilities Mailing Addresses and Phone Numbers Staff Directory Visiting Headquarters Visiting a Regional Office What We Do Contact Us to ask a question, provide feedback, or report a problem. Discover. Accessibility Budget & Performance Contracting EPA www Web Snapshot Grants No FEAR Act Data Plain Writing Privacy Privacy and Security Notice Connect. Data.gov Inspector General Jobs Newsroom Open Government Regulations.gov Subscribe USA.gov White House Ask. Contact EPA EPA Disclaimers Hotlines FOIA Requests Frequent Questions Follow. LAST UPDATED ON JULY 2, 2021