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Overview of the Chesapeake Bay TMDL

The EPA completed a Total Maximum Daily Load (TMDL) for the Chesapeake Bay watershed on December 29, 2010. The TMDL identified the nitrogen, phosphorus, and sediment reductions that each Bay State needs to achieve in order for the Chesapeake Bay to meet water quality standards. The TMDL included Phase I Watershed Implementation Plans (WIPs) developed by States within the Bay watershed. Virginia’s Plan outlined the actions expected of the wastewater, urban/stormwater, agriculture, and on-site sewage sectors in order to meet statewide nutrient and sediment reduction goals.

States are charged with the development of Phase II WIPs and, in Virginia, the identification of local strategies to provide nutrient reductions similar to that indicated in the Phase I WIP. The Virginia Department of Conservation and Recreation (DCR) requested that Planning District Commissions throughout the Bay watershed help the State facilitate the Phase II WIP process and collect input from localities for Virginia’s Phase II WIP. For more information on DCR’s Chesapeake Bay TMDL implementation efforts, scroll down to Federal and State Resources.


HRPDC staff, on behalf of Hampton Roads localities, participated in the TMDL development process and continues to represent local interest through Virginia’s Phase I WIP Stakeholder Advisory Group (SAG) and the Phase II WIP SAG convened by the Secretary of Natural Resources, as well as the Chesapeake Bay Program's Urban Stormwater Working Group.

At the request of the Commonwealth of Virginia, HRPDC agreed to facilitate the involvement of member localities in Virginia’s Phase II WIP development process. HRPDC formed a regional steering committee and endorsed a two-tiered approach to develop and provide information to meet Virginia’s input requests. For more information, see:

  • HRPDC Regional Steering Committee: This advisory committee was formed to assist Hampton Roads localities with a coordinated effort to development regional and local Phase II WIP strategies for submittal to Virginia. Committee agendas, presentation materials, and summaries are available for review.


Information and resources from federal and state entities are accessible by the links below:

EPA’s Chesapeake Bay TMDL Website: This site is EPA’s gateway for Chesapeake Bay TMDL Information.

  • EPA's Final Chesapeake Bay TMDL Documents - On December 29, 2010, the U.S. Environmental Protection Agency (EPA) established the Chesapeake Bay Total Maximum Daily Load (TMDL), a “pollution diet” to initiate actions to restore water quality in the Chesapeake Bay and the region’s streams, creeks and rivers. This website provides access to the entire TMDL document, including the executive summary, Appendices A through X, and the EPA’s responses to public comments.

DCR’s Chesapeake Bay TMDL Website: DCR is leading Virginia’s effort to implement the Chesapeake Bay TMDL. This website provides an archive of Virginia’s Phase I WIP submittals, Phase II WIP submittals, Bay TMDL background information, Stakeholder Advisory Group materials, and locality coordination information.

Chesapeake Bay Program: The Chesapeake Bay Program is a regional partnership working to restore the Chesapeake Bay. Program partners include the states of Maryland, Pennsylvania and Virginia; the District of Columbia; the Chesapeake Bay Commission, a tri-state legislative body; the EPA; and participating citizen advisory groups. The Chesapeake Bay Program is organized into committees, goal implementation teams, workgroups and action teams.

The following links provide information on the development of Chesapeake Bay TMDL WIPs in other Bay states:

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