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Environmental Laws, Regulations and Policies

UPDATE: MDE Seeking Public Comment on Draft MS4 Permit

The Maryland Department of the Environment (MDE) issues permits allowing the discharge of stormwater from storm drain systems into waterways. These permits, called National Pollution Discharge and Elimination System (NPDES), municipal separate storm sewer system (MS4) permits, require that communities implement programs to control the discharge of pollutants and protect the water quality in local streams, rivers, wetlands and bays.

MDE has a released a draft updated MS4 permit and is seeking public comment. To read the permit and submit comments before the March 30, 2017 deadline, visit MDE's NPDES webpage.

For questions on how the updated permit will impact Rockville programs, contact Stormwater Manager Heather Gewandter at or 240-314-8873.

Environmental laws and regulations are established to protect and foster a healthy and sustainable environment. Environmental regulations usually focus on protecting public health and preserving and restoring the quality of air, water and land resources. The City of Rockville, like most governments, enforces regulations and implements policies designed to preserve environmental and human health. In addition, the City's own activities are regulated by state and federal environmental laws. Below is a list of City environmental ordinances, policies and guidelines, as well as laws the City is required to follow.

State and Federal Laws
City Ordinances and Regulations


 Policies and Guidelines

Other Requirements
The City is subject to other requirements covering items such as waste handling and clean air. For most other requirements, the City is not required to perform additional compliance activities.

Environmental Management Division

111 Maryland Avenue
Rockville, MD 20850

Ph: 240-314-8870