Water: Total Maximum Daily Loads (303d)
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Laws & RegulationsLaws & Executive OrdersClean Water ActTotal Maximum Daily Loads (303d)EPA Guidance
Laws & RegulationsLaws & Executive OrdersClean Water ActTotal Maximum Daily Loads (303d)EPA GuidanceEPA Guidance
EPA Program Guidance
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On this page:
- Section 303(d) Program Guidance
- Sections 303(d), 305(b) and 314 Integrated Reporting Guidance
- 303(d) Listing of Impaired Waters Guidance
- 303(d) TMDL Development Guidance
Section 303(d) Program Guidance
EPA Review of 2002 Section 303(d) Lists and Guidelines for Reviewing TMDLs under Existing Regulations issued in 1992
- Cover memo transmitting 2 guidance documents — Charles H. Sutfin — May 20, 2002
- Recommended Framework for EPA Approval Decisions on 2002 State Section 303(d) List Submissions | PDF Version (11 pp, 261K)
- Guidelines for Reviewing TMDLs Under Existing Regulations Issued in 1992 | PDF Version (7 pp, 89K)
303(d), 305(b) and 314 Integrated Reporting Guidance
Guidance for Assessment, Listing and Reporting Requirements Pursuant to Sections 303(d), 305(b) and 314 of the Clean Water Act
- Information Concerning 2012 Clean Water Act Sections 303(d), 305(b), and 314 Integrated Reporting and Listing Decisions — Denise Keehner — March 21, 2011 | PDF Version (10 pp, 132K)
- Appendix 1: Reporting the Results of Statistical Surveys to EPA (XLS) (62K), March 21, 2011
- Appendix 2: ADB Compatible Template (XLS)(102K), March 21, 2011
- November 15, 2010 Memorandum: Integrated Reporting and Listing Decisions Related to Ocean Acidification — Denise Keehner — November 15, 2010 | PDF Version (16 pp, 5.5MB)
- Information Concerning 2010 Clean Water Act Sections 303(d), 305(b), and 314 Integrated Reporting and Listing Decisions — Suzanne Schwartz — May 5, 2009 | PDF Version (11 pp, 122K).
- Appendix 1: Reporting the Results of Statistical Surveys to EPA (XLS) (154K), June 4, 2010
- Information Concerning 2008 Clean Water Act Sections 303(d), 305(b), and 314 Integrated Reporting and Listing Decisions — Diane Regas — Oct. 12, 2006 | PDF Version (21 pp, 167K)
- Guidance for 2006 Assessment, Listing and Reporting Requirements Pursuant to Sections 303(d), 305(b) and 314 of the Clean Water Act — Diane Regas — July 29, 2005
- Guidance for 2004 Assessment, Listing and Reporting Requirements Pursuant to Sections 303(d) and 305(b) of the Clean Water Act, TMDL -01-03 — Diane Regas — July 21, 2003 | PDF Version (38 pp, 312K)
- 2002 Integrated Water Quality Monitoring and Assessment Report Guidance — Robert H. Wayland III — November 19, 2001 | PDF Version (28 pp, 162K)
303(d) Listing of Impaired Waters Guidance
Guidance for Assessment, Listing and Reporting Requirements Pursuant to Sections 303(d), 305(b) and 314 of the Clean Water Act
- Listing Waters Impaired by Atmospheric Mercury Under Clean Water Act Section 303(d): Voluntary Subcategory 5m for States with Comprehensive Mercury Reduction Programs — Craig Hooks — Mar. 8, 2007
- Clarification of the Use of Biological Data and Information in the 2002 Integrated Water Quality Monitoring and Assessment Report Guidance — Robert H.Wayland III — March 26, 2002 | PDF Version (1 pg, 5K)
- Guidance: Use of Fish and Shellfish Advisories and Classifications in 303(d) and 305(b) Listing Decisions(PDF) (9 pp, 68K) — Geoffrey H. Grubbs and Robert H. Wayland III — Oct. 24, 2000
- EPA Review of 2000 Section 303(d) Lists — Robert H. Wayland III — April 28, 2000
- National Clarifying Guidance For 1998 State and Territory Section 303(d) Listing Decisions — Robert H. Wayland III — August 17, 1997
- Guidance for 1994 Section 303(d) Lists — Geoffrey H. Grubbs; November 26, 1993
303(d) TMDL Development Guidance
- Where Mercury Loadings are Predominantly from Air Deposition:
- Cover Memo: Elements of Mercury TMDLs Where Mercury Loadings are Predominantly from Air Deposition (PDF) (2 pp, 13K) – Craig Hooks — September 29, 2008
- TMDLs Where Mercury Loadings are Predominantly from Air Deposition (PDF) (22 pp, 410K), September 29, 2008
- Establishing TMDL "Daily" Loads in Light of the Decision by the U.S. Court of Appeals for the D.C. Circuit in Friends of the Earth, Inc. v. EPA, et al., No.05-5015, (April 25, 2006) and Implications for NPDES Permits — Benjamin H. Grumbles — Nov. 15, 2006 | PDF Version (6 pp, 470K)
- Clarification Regarding "Phased" Total Maximum Daily Loads — Benita Best-Wong — Aug. 2, 2006 | PDF Version (5 pp, 477K)
- Establishing Total Maximum Daily Load (TMDL) Wasteload Allocations (WLAs) for Storm Water Sources and NPDES Permit Requirements Based on Those WLAs (PDF) (6 pp, 235K) — Robert H. Wayland, III and James A. Hanlon — Nov. 22, 2002
- New Policies for Establishing and Implementing Total Maximum Daily Loads (TMDLs) — Bob Perciasepe — August 8, 1997 | PDF Version (8 pp, 679K)
- Guidance for Water-Quality-based Decisions: The TMDL Process — US EPA, 1991, EPA440-4-91-001