Rosewin Sweeney


Rosewin Sweeney joined AquaLaw in 2018. Her practice focuses on environmental regulation, permit negotiation, compliance counseling, agency liaison, defense and resolution of agency and citizen enforcement actions, and environmental litigation under various state and federal laws and regulations.

Prior to joining the firm, Rosewin served 18 years in the Maryland Office of the Attorney General, where she represented the Maryland Department of the Environment (MDE) on all aspects of environmental law. For seven of those years, she was MDE’s Principal Counsel, the agency’s top lawyer. She advised the agency on proposed legislation and regulations, provided counsel on complex permitting situations, and represented the agency in administrative and civil litigation at the state and federal levels.

More recently, Rosewin was a partner in Venable, LLP’s environmental practice in Baltimore, where she represented governmental and private sector clients on a variety of environmental matters under Maryland and federal environmental laws and regulations.

Rosewin has substantial experience with water appropriations, wetlands regulation, water quality protection, wastewater and stormwater management, oil spill remediation, solid waste management, citizen suit defense, and other environmental litigation matters.


J.D., Georgetown University Law Center, Washington, D.C., 1984, cum laude

National Moot Court Team, Member

M.A. History, Johns Hopkins University, Baltimore, Maryland, 1980

A.B. American Studies, Georgetown University, Washington, D.C., 1977

Professional Affiliations

American Bar Association

Maryland State Bar Assn, Environmental Law & State/Local Government Law Sections

Baltimore City Bar Association


Maryland Bar

U.S. Court of Appeals for the Fourth Circuit

U.S. District Court for the District of Maryland

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