An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Chesapeake Bay TMDL

EPA Final Evaluation of 2016-2017 Milestone and Midpoint Progress and 2018-2019 Milestone Commitments in the Chesapeake Bay Watershed

EPA has released its midpoint assessment of efforts by Delaware, Maryland, New York, Pennsylvania, Virginia, West Virginia, the District of Columbia and the federal agencies to reduce nitrogen, phosphorus and sediment pollution to the Chesapeake Bay. As part of the assessment of midpoint progress, EPA provided its evaluations of the Bay jurisdictions' and federal agencies' progress towards meeting their 2016-2017 milestones and 2018-2019 commitments.

The Chesapeake Bay Total Maximum Daily Load calls for having controls in place to achieve 60 percent of the needed reductions by 2017 as compared to 2009. The assessment found that the jurisdictions have made considerable progress in reducing pollution that is reflected in measurable ways, including record acreage Exitof underwater grasses and the highest estimates Exitof water quality standards attained in more than 30 years. While the 60 percent goals for reducing phosphorus and sediment as measured under the current suite of modeling tools were exceeded, the goal for reducing nitrogen was not met. The jurisdictions will have an opportunity to optimize their pollution control strategies moving forward.

View the detailed evaluations for the Bay jurisdictions and federal agencies, as well as a fact sheet which provides a summary of the progress from 2009 through 2017 below.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.