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Northwest Regional Office

DEP staff are working remotely due to the COVID-19 pandemic. For assistance or to report an environmental emergency please call 814-332-6945 between 8 AM – 4 PM and 1-800-541-2050 between 4 PM and 8 AM.

Effective January 10, 2019, inquiries and correspondence regarding new permit applications, reporting, and compliance matters related to sites in Armstrong and Indiana Counties should be directed to DEP’s Northwest Regional Office. Questions on permit applications under review as of January 9, 2019, and pending enforcement matters for Armstrong and Indiana Counties should be directed to DEP’s Southwest Regional Office. Inquiries can also be directed to

Mining and Radiation Protection permits and programs are not affected by this regional office change. 

DEP Northwest Regional Office 
230 Chestnut Street
Meadville, PA 16335
Office Hours 8 a.m. - 4 p.m. 
Phone: 814-332-6945  (office hours) 
1-800-541-2050 (after hours) 

Spills and other emergencies in the Northwest Region should be reported immediately to DEP by telephone to 814-332-6945 (business hours) or 800-373-3398 (after hours) or by calling 1-800-541-2050 (Statewide Number for Emergencies)

Regional Director: James E. Miller

Counties served: Armstrong, Butler, Clarion, Crawford, Elk, Erie, Forest, Indiana, Jefferson, Lawrence, McKean, Mercer, Venango, Warren

White Memorial Building 
310 Best Ave (physical address)
PO Box 669 (mailing address) 
Knox, PA 16232 
Phone: 814-797-1191

New Castle 
121 North Mill Street 
New Castle, PA 16101 
Phone: 814-332-6945

321 North State Street 
North Warren, PA 16365 
Phone: 814-332-6945
Tom Ridge Environmental Center
301 Peninsula Dr.
Erie, PA 16505
Phone: 814-833-7424