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Approved or Established TMDL Review

A Total Maximum Daily Load (TMDL) is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards. Industrial activities can generate a number of pollutants in stormwater that can lead to exceedances of water quality standards, and construction activities typically generate sediment, which can affect related parameters such as turbidity and total suspended solids. Other pollutants may also be of concern, depending on local conditions.

Depending upon the TMDL, you may need to install additional stormwater control measures that are specifically designed to achieve reductions in the pollutant(s) causing the impairment to your receiving water. You should consult the permit requirements pertaining to discharges to impaired waters in the 2012 Construction General Permit (CGP) or the 2008 Multi-Sector General Permit (MSGP), whichever applies to your facility.

WHAT CAN I FIND ON THIS WEB SITE?

TMDL Stormwater Resources - Several stormwater-source TMDLs and case studies highlighting innovative approaches states are using to address stormwater. Includes information on developing wasteload allocations for stormwater and information on implementing stormwater wasteload allocations in NPDES permits.

State/Territory TMDL Information - The table below includes links to state- and territory-specific TMDL information.

Non-Authorized State/Territories

TMDL Wasteload Allocation

Supplemental Information

Alabama -- Indian Country only Region 4: Alabama TMDL Listing

Region 4 TMDL Contact

Alabama Department of Environmental Management TMDL program Exit EPA Site

Alabama 303(d) Listing/Map Exit EPA Site

Alaska -- Indian Country and Areas in the Denali National Park and Preserve subject to construction by a Federal Operator Region 10: Alaska TMDL Listing

Region 10 TMDL Contact

Alaska Department of Environmental Conservation TMDL program Exit EPA Site

Alaska Water Quality Assessment Report

American Samoa Region 9: American Samoa TMDL Information

Note: Currently there are no TMDLs developed.

Region 9 TMDL Contact

 
Arizona -- Indian Country only Region 9: Arizona TMDL Listing

Region 9 TMDL Contact

Arizona Department of Environmental Quality TMDL Site Exit EPA Site

Arizona Water Quality Assessment Report

California -- Indian Country only Region 9: California TMDL Listing

Region 9 TMDL Contact

California Environmental Protection Agency TMDL program Exit EPA Site

California Water Quality Assessment Reportt

Colorado -- Federal Facilities and Indian Country only Colorado Department of Public Health and Environment TMDL Program Exit EPA Site

Colorado Water Quality Assessment Report

Connecticut -- Indian Country only Region 1: Connecticut TMDL Listing

Region 1 TMDL Contact

Connecticut Department of Environmental Protection TMDL program Exit EPA Site

Connecticut Water Quality Assessment Report/a>

Delaware -- Federal Facilities only Region 3: Delaware TMDL Listing

Region 3 TMDL Contact

Delaware Department of Natural Resources and Environmental Control TMDL program Exit EPA Site

Delaware Water Quality Assessment Report

District of Columbia Region 3: District of Columbia TMDL Listing

Region 3 TMDL Contact

District of Columbia Water Quality Assessment Report 
Florida -- Indian Country only Region 4: Florida TMDL Listing

Region 4 TMDL Contact

Florida Department of Environmental Protection TMDL Program Exit EPA Site

Florida Water Quality Assessment Report

Guam Region 9: Guam TMDL Listing

Note: Currently there are no TMDLs developed.

Region 9 TMDL Contact

Guam Water Quality Assessment Report
Idaho Region 10: Idaho TMDL Listing

Region 10 TMDL Contact

Idaho Department of Environmental Quality TMDL program Exit EPA Site

Idaho Water Quality Assessment Report

Iowa -- Indian Country only Region 7: Iowa TMDL Listing Iowa Department of Natural Resources TMDL program Exit EPA Site

Iowa Water Quality Assessment Report

Johnston Atoll    
Kansas -- Indian Country only Region 7: Kansas TMDL Listing Kansas Department of Health and Environment TMDL program Exit EPA Site

Kansas Water Quality Assessment Report

Louisiana -- Indian Country only Region 6: Louisiana TMDL Listing

Region 6 TMDL Contact

Louisiana Department of Environmental Quality TMDL Site Exit EPA Site

Louisiana Water Quality Assessment Report

Massachusetts Region 1: Massachusetts TMDL Listing

Region 1 TMDL Contact

Massachusetts Department of Environmental Protection TMDL program Exit EPA Site

Massachusetts Water Quality Assessment Report

Michigan -- Indian Country only Region 5: Michigan TMDL Listing

Region 5 TMDL Contact

Michigan Department of Environmental Quality TMDL program Exit EPA Site

Michigan Water Quality Assessment Report

Midway Islands Currently there are no TMDLs developed.  
Minnesota -- Indian Country only Region 5: Minnesota TMDL Listing

Region 5 TMDL Contact

Minnesota Pollution Control Agency TMDL program Exit EPA Site

Minnesota Water Quality Assessment Report

Mississippi -- Indian Country only Region 4: Mississippi TMDL Listing

Region 4 TMDL Contact

Mississippi Department of Environmental Quality TMDL program Exit EPA Site

Mississippi Water Quality Assessment Report

Montana -- Indian Country only Montana Department of Environmental Quality TMDL program Exit EPA Site

Montana Water Quality Assessment Reportt

Nebraska -- Indian Country only Region 7: Nebraska TMDL Listing Nebraska Department of Environmental Quality TMDL program Exit EPA Site

Nebraska Water Quality Assessment Report

Nevada -- Indian Country only Region 9: Nevada TMDL Listing

Region 9 TMDL Contact

Nevada Department of Environmental Protection TMDL Site Exit EPA Site

Nevada Water Quality Assessment Report

New Hampshire Region 1: New Hampshire TMDL Listing

Region 1 TMDL Contact

New Hampshire Department of Environmental Services TMDL program Exit EPA Site

New Hampshire Water Quality Assessment Report

New Mexico Region 6: New Mexico TMDL Listing

Region 6 TMDL Contact

New Mexico Environment Department TMDL Site Exit EPA Site

New Mexico Water Quality Assessment Report

New York -- Indian Country only Region 2: New York TMDL Listing New York Department of Environmental Conservation TMDL program Exit EPA Site

New York Water Quality Assessment Report

North Carolina -- Indian Country only Region 4: North Carolina TMDL Listing

Region 4 TMDL Contact

North Carolina Division of Water Quality TMDL program Exit EPA Site

North Carolina Water Quality Assessment Report

North Dakota -- Indian Country only North Dakota Department of Health TMDL program Exit EPA Site

North Dakota Water Quality Assessment Report

Northern Mariana Islands Region 9: Northern Mariana Islands TMDL Listing

Note: Currently there are no TMDLs developed.

Region 9 TMDL Contact

N. Mariana Islands Water Quality Assessment Report
Oklahoma -- Oil & Gas Operations, Indian Country Region 6: Oklahoma TMDL Listing

Region 6 TMDL Contact

Oklahoma Department of Environmental Quality TMDL program Exit EPA Site

Oklahoma Water Quality Assessment Report

Oregon -- Indian Country only Region 10: Oregon TMDL Listing

Region 10 TMDL Contact

Oregon Department of Environmental Quality TMDLs Program Exit EPA Site

Oregon Water Quality Assessment Report

Puerto Rico   Puerto Rico Water Quality Assessment Report
Rhode Island -- Indian Country only Region 1: Rhode Island TMDL Listing

Region 1 TMDL Contact

Rhode Island Department of Environmental Management TMDL program Exit EPA Site

Rhode Island Water Quality Assessment Report

South Dakota -- Indian Country only South Dakota Department of Environmental and Natural Resources TMDL program Exit EPA Site

South Dakota Water Quality Assessment Report

Texas -- Indian Country and Oil & Gas Operations Region 6: Texas TMDL Listing

Region 6 TMDL Contact

Texas State Soil and Water Conservation Board TMDL program Exit EPA Site

Texas Water Quality Assessment Report

Utah -- Indian Country only Utah Division of Environmental Quality TMDL program Exit EPA Site

Utah Water Quality Assessment Report

Vermont -- Federal Facilities Region 1: Vermont TDML Listing

Region 1 TMDL Contact

Vermont Department of Environmental Conservation TMDL program Exit EPA Site

Vermont Water Quality Assessment Report

Wake Island Currently there are no TMDLs developed.  
Washington -- Federal Facilities, Indian Country only Region 10: Washington TMDL Listing

Region 10 TMDL Contact

Washington Department of Ecology TMDL program Exit EPA Site

Washington Water Quality Assessment Report

Wisconsin -- Indian Country only Region 5: Wisconsin TMDL Listing

Region 5 TMDL Contact

Wisconsin Department of Natural Resources TMDL program Exit EPA Site

Wisconsin 303(d) List/Fact Sheet

Exit EPA Site
Wyoming -- Indian Country only Wyoming Department of Environmental Quality TMDL program Exit EPA Site

Wyoming Water Quality Assessment Report

 

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Last updated on February 16, 2012 4:41 PM
URL:http://cfpub1.epa.gov/npdes/stormwater/tmdl.cfm