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 Alabama 303(d) Listing/Map
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 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 Arizona Water Quality Assessment Report
California -- Indian Country only	Region 9: California TMDL Listing Region 9 TMDL Contact	California Environmental Protection Agency TMDL program California Water Quality Assessment Reportt
Colorado -- Federal Facilities and Indian Country only	Region 8 TMDL Contact	Colorado Department of Public Health and Environment TMDL Program 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 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 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 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 Idaho Water Quality Assessment Report
Iowa -- Indian Country only	Region 7: Iowa TMDL Listing	Iowa Department of Natural Resources TMDL program Iowa Water Quality Assessment Report
Johnston Atoll
Kansas -- Indian Country only	Region 7: Kansas TMDL Listing	Kansas Department of Health and Environment TMDL program 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 Louisiana Water Quality Assessment Report
Massachusetts	Region 1: Massachusetts TMDL Listing Region 1 TMDL Contact	Massachusetts Department of Environmental Protection TMDL program 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 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 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 Mississippi Water Quality Assessment Report
Montana -- Indian Country only	Region 8 TMDL Contact	Montana Department of Environmental Quality TMDL program Montana Water Quality Assessment Reportt
Nebraska -- Indian Country only	Region 7: Nebraska TMDL Listing	Nebraska Department of Environmental Quality TMDL program 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 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 New Hampshire Water Quality Assessment Report
New Mexico	Region 6: New Mexico TMDL Listing Region 6 TMDL Contact	New Mexico Environment Department TMDL 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 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 North Carolina Water Quality Assessment Report
North Dakota -- Indian Country only	Region 8 TMDL Contact	North Dakota Department of Health TMDL program 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 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 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 Rhode Island Water Quality Assessment Report
South Dakota -- Indian Country only	Region 8 TMDL Contact	South Dakota Department of Environmental and Natural Resources TMDL program 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 Texas Water Quality Assessment Report
Utah -- Indian Country only	Region 8 TMDL Contact	Utah Division of Environmental Quality TMDL program Utah Water Quality Assessment Report
Vermont -- Federal Facilities	Region 1: Vermont TDML Listing Region 1 TMDL Contact	Vermont Department of Environmental Conservation TMDL program 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 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 Wisconsin 303(d) List/Fact Sheet
Wyoming -- Indian Country only	Region 8 TMDL Contact	Wyoming Department of Environmental Quality TMDL program Wyoming Water Quality Assessment Report

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