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Restoring the Chesapeake Bay and Local Waterways

The federal Clean Water Act (CWA) was put in place to ensure chemical, physical, and biological integrity of the nation’s waters. It established requirements for each state to develop programs to address water pollution, including establishment of water quality standards; implementation of water quality monitoring programs; identification and reporting of impaired waters; establishment of Total Maximum Daily Loads (TMDLs), a tool that sets pollution limits necessary to maintain applicable water quality standards; and development of maximum pollutant loads (waste load allocations) that maintain water quality standards, called TMDL documents.
One means for the U.S. Environmental Protection Agency (EPA) to enforce these standards is through the National Pollutant Discharge Elimination System program (NPDES), which regulates discharges from point sources. The Maryland Department of the Environment (MDE) is delegated authority to issue NPDES discharge permits within Maryland. The Maryland Department of Transportation State Highway Administration (MDOT SHA) is covered under a Municipal Separate Storm Sewer System (MS4) permit. 

The MS4 permit requires MDOT SHA to adhere to Maryland water quality standards for discharges from MDOT SHA storm drain systems within urbanized counties in Maryland (Anne Arundel, Baltimore, Carroll, Cecil, Charles, Frederick, Harford, Howard, Montgomery, Prince George’s and Washington).  It includes a requirement to establish practices that restore water quality from past roadway construction and meet waste load allocations in TMDLs. 
Click the link above to read the MDOT SHA Impervious Restoration and Consolidated TMDL Implementation Plan, MS4 annual reports, MDOT SHA implementation plans available for public review and comment, and other requirements for the MDOT SHA MS4 stormwater discharge permit.
MDOT SHA reduces nutrients, sediments, bacteria, trash and PCBs to restore the State’s local waters and the Bay.  Using the interactive map, you can find projects in your area that MDOT SHA is implementing.  These projects will ensure MDOT SHA is complying.  As new TMDLs are issued, new plans will be developed for implementing additional projects.
Click the link above to access MDOT SHA restoration projects near you.  Enter an address into our interactive mapping tool to find out what projects MDOT SHA is planning in the 11 MS4 counties or to explore projects in your neighborhood.
Read descriptions and view photos of the projects MDOT SHA is using to reduce pollutants in stormwater runoff and improve water quality in local waterways and the Bay. These practices include changing land uses, reducing pollutant loads on roadways, and implementing structural controls and non-structural techniques.
MDOT SHA is committed to providing information to the public about reducing stormwater pollution. Explore documents and links that detail the benefits of stormwater management and ways you can restore Maryland’s waters and the Chesapeake Bay.
Maintenance and remediation of SWM facilities is performed by MDOT SHA District maintenance shops as part of their roadside operational activities. Maintenance manuals promote a systematic approach and ensure continued high maintenance standards.