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Maryland State Government Maryland Department of the Environment

Contact Us

The Maryland Department of the Environment is located at 1800 Washington Blvd., Baltimore, MD 21230. Its primary number is 410-537-3000.  For emergency situations such as oil spills or release of pollutants that pose a grave threat to public health and the environment, please call the toll free number (866) 633-4686. You may also refer to the Emergency Numbers.  For contact information, please refer to the Numbers to KnowCustomer Service DirectoryMDE Locations and the MD State Telephone Directory, or email us at  

MDE welcomes your comments and suggestions.  If you have comments, suggestions or questions about concerns related to MDE programs and activities, environmental issues, or on Maryland environmental regulations and permits, you may send an email to