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Total Maximum Daily Loads
National Summary
A key component of the federal effluent limitation requirements are the total maximum daily load (TMDL) provisions under Section 303(d) of the CWA. TMDLs are the amount of pollutant, or property of a pollutant, from point, nonpoint, and natural background sources, that may be discharged to receiving water that is water quality-limited. Any pollutant loading above the TMDL results in violation of an applicable water quality standard.
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TypeTitleDateState
Guidance Documents An Approach for Using Load Duration Curves in the Development of TMDLs  National
Notices Anacostia River Watershed: Data Solicitation in Support of Revising Total Maximum Daily Loads for Debris, Floatables, Trash 08/24/2018National
Notices Clean Water Act: Availability of List Decisions 09/06/2012National
Notices Clean Water Act: Availability of List Decisions 04/08/2013National
Notices Clean Water Act: Availability of List Decisions 05/09/2013National
Notices Clean Water Act: Availability of List Decisions 07/30/2013National
Guidance Documents Considerations for Revising and Withdrawing TMDLs  National
Guidance Documents Draft Guidance for Water Quality Based Decisions: The TMDL Process  National
Notices Information Collection Request Submitted to OMB for Review and Approval; Comment Request; Willingness To Pay Survey for Chesapeake Bay Total Maximum Daily Load: Instrument, Pre-Test, and Implementation 02/07/2013National
Notices Notice of Reopening of Public Comment Period on the Clean Water Act Section 303(d): Availability of List Decisions 09/12/2017National
Notices Notice of Withdrawal of One Total Maximum Daily Load 06/17/2014National
Guidance Documents Options for Expressing Daily Loads in TMDLs  National
Notices Proposed Listing of Additional Waters To Be Included on Indiana's 2010 List of Impaired Waters 06/14/2013National
Notices Proposed Second Interim Settlement Agreement, Clean Water Act Claims 08/21/2018National
Notices Proposed Withdrawal of One Total Maximum Daily Load; Arkansas 04/21/2014National
Guidance Documents TMDLs with Stormwater Sources: A Summary of 17 TMDLs  National
Guidance Documents TMDLs and NPDES Stormwater Permits for Impaired Water Bodies: A Summary of State Practices  National
Guidance Documents Total Maximum Daily Load Program Needs Better Data and Measures to Demonstrate Environmental Results  National