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National Pollutant Discharge Elimination System (NPDES)

Authorization Status for EPA's Construction and Industrial Stormwater Programs

EPA has authorized many states to administer the NPDES stormwater permitting program, including for regulated construction- and industrial-stormwater discharges.

EPA’s 2017 Construction General Permit (CGP) and 2015 Multi-Sector General Permit (MSGP) apply only in the jurisdictions where EPA remains the permitting authority.

CGP and MSGP Coverage Areas

State or Territory

Construction General Permit

Multi-Sector General Permit

Areas of Coverage

Additional Permit Conditions?

Areas of Coverage

Additional Permit Conditions?

Alabama

All Indian Country within the state, under permit number ALR10I000.

No

All Indian Country within the state.

Contact EPA Region 4. 

No

Alaska

All Indian Country within the state, under permit number AKR10I000.


Areas in Denali National Park and Preserve subject to construction activity by a Federal Operator, under permit number AKR10F000.

No

All Indian Country within the state, under permit number AKR05I000.


Areas in Denali National Park and Preserve subject to industrial activity by a Federal Operator, under permit number AKR05F000.

No

American Samoa

The Islands of American Samoa, under permit number ASR100000.

No

The Islands of American Samoa, under permit number ASR050000.

No

Arizona

All Indian Country within the state, as well as Navajo Reservation lands in New Mexico and Utah, under permit number AZR10I000.

Yesa

All Indian Country within the state, including Navajo Reservation lands in New Mexico and Utah, under permit number AZR05I000.

Yesb

California

All Indian Country within the state, under permit number CAR10I000.

Yesa

All Indian Country within the state, under permit number CAR05I000.

Yesb

Colorado

All Indian Country within state, as well as the portion of the Ute Mountain Reservation located in New Mexico, under permit number COR10I000.

Other areas in the state subject to construction activity by a Federal Operator, under permit number COR10F000.

Yesa

All Indian country within the state, as well as the portion of the Ute Mountain Reservation located in New Mexico, under permit number COR05I000.

Areas in the state, except those located on Indian Country land, subject to industrial activity by a Federal Operator, under permit number COR05F000.

No

Connecticut

All Indian Country within the state, under permit number CTR10I000.

No

All Indian Country within the state, under permit number CTR05I000.

No

Delaware

Areas in the state subject to construction activity by a Federal Operator, under permit number DER10F000.

Yesa

Areas in the state subject to industrial activity by a Federal Operator, under permit number DER05F000.

No

District of Columbia

The District of Columbia, under permit number DCR100000.

Yesa

The District of Columbia, under permit number DCR050000.

Yesb

Florida

All Indian Country within the state, under permit number FLR10I000.

No

All Indian Country within the state, contact EPA Region 4.

No

Guam

The Island of Guam, under permit number GUR100000.

Yesa

The Island of Guam, under permit number GUR050000.

No

Idaho

The state (except Indian Country lands), under permit number IDR100000.

Indian Country within the state, except Duck Valley Reservation lands, under permit number IDR10I000.

Duck Valley Reservation lands, under Nevada permit number NVR10I000.

Yesa

The state (except Indian Country lands), under permit number IDR050000.

Indian Country within the state, except Duck Valley Reservation lands, under permit number IDR05I000.

Duck Valley Reservation lands, under Nevada permit number NVR05I000.

Yesb

Iowa

All Indian Country within the state, under permit number IAR10I000.

No

All Indian Country within the state, under permit number IAR05I000.

No

Johnston Atoll

The Island of Johnston Atoll, under permit number JAR100000.

No

The Island of Johnston Atoll, under permit number JAR050000.

No

Kansas

All Indian Country within the state, under permit number  KSR10I000.

No

All Indian Country within the state, under permit number KSR05000.

No

Louisiana

All Indian Country within the state, under permit number LAR10I000.

No

All Indian Country within the state, under permit number LAR05I000.

No

Massachusetts

The commonwealth (except Indian Country lands), under permit number MAR100000.

All Indian Country within the commonwealth, under permit number MAR10I000.

No

The commonwealth, except Indian Country lands, under permit number MAR050000.


All Indian Country within the commonwealth, under permit number MAR05I000.

Yesb

Michigan

All Indian Country within the state, under permit number MIR10I000.

No

All Indian Country within the state, under permit number MIR05000I.

No

Midway Islands

The Islands of Midway Island and Wake Island, under permit number MWR100000.

No

The Islands of Midway Island and Wake Island, under permit number MWR050000.

No

Minnesota

All Indian Country within the state, under permit number MNR10I000.

Yesa

All Indian Country within the state, under permit number MNR05I000.

Yesb

Mississippi

All Indian Country within the state, under permit number MSR10I000.

No

All Indian Country within the state.

Contact EPA Region 4. 

No

Montana

All Indian Country within the state, under permit number MTR10I000.

Yesa

All Indian Country within the state, under permit number MTR05I000.

No

Nebraska

Indian Country within the state, except Pine Ridge Reservation (see Region 8), under permit number NER10I000.

No

All Indian Country within the state, under permit number NER05I000.

No

Nevada

All Indian Country within the state, as well as the Duck Valley Reservation in Idaho, the Fort McDermitt Reservation in Oregon and the Goshute Reservation in Utah, under permit number NVR10I000.

No

All Indian Country within the state, as well as the Duck Valley Reservation in Idaho, the Fort McDermitt Reservation in Oregon and the Confederated Tribes of the Goshute Reservation in Utah, under permit number NVR05I000.

No

New Hampshire

The state, under permit number NHR100000.

Yesa

The state, under

permit number NHR050000.

Yesb

New Mexico

The state (except Indian Country lands), under permit number NMR100000.

Indian Country within the state, except Navajo Reservation lands (which are covered under Arizona permit number AZR10I000) and Ute Mountain Reservation lands (which are covered under Colorado permit number COR10I000), under permit number NMR10I000.

Yesa

The state (except Indian Country lands), under permit number NMR050000.

Indian Country within the state, except Navajo Reservation lands (which are covered under Arizona permit number AZR05I000) and Ute Mountain Reservation lands (which are covered under Colorado permit number COR05I000), under permit number NMR05I000.

Yesb

New York

All Indian Country within the state, under permit number NYR10I000.

No

All Indian Country within the state, contact EPA Region 2.

No

North Carolina

All Indian Country within the state, under permit number NCR10I000.

No

All Indian Country within the state, contact EPA Region 4. 

No

North Dakota

Indian Country within the state, as well as the portion of the Standing Rock Reservation located in South Dakota (except for the portion within the former boundaries of the Lake Traverse Reservation and covered under South Dakota permit number SDR10I000), under  permit number NDR10I000.

No

Indian Country within the state, as well as the portion of the Standing Rock Reservation located in South Dakota (except for the portion of the lands within the former boundaries of the Lake Traverse Reservation and covered under South Dakota permit number SDR05I000), under permit number NDR05I000.

No

Northern Mariana Islands

The commonwealth, under permit number MPR100000.

No

The commonwealth, under permit number MPR050000.

Yesb

Oklahoma

All Indian Country within the state, under permit number OKR10I000.

Discharges in the state that are not under the authority of the Oklahoma Department of Environmental Quality, including activities associated with oil and gas exploration, drilling, operations, and pipelines (includes SIC Groups 13 and 46, and SIC codes 492 and 5171), and point source discharges associated with agricultural production, services, and silviculture (includes SIC Groups 01, 02, 07, 08, 09), under permit number OKR10F000.

Yesa

All Indian Country within the state, under permit number OKR05I000.

Facilities in the state not under the jurisdiction of the Oklahoma Department of Environmental Quality, except those on Indian Country lands, under permit number OKR05F000.

Yesb

Oregon

Indian Country within the state, except Fort McDermitt Reservation lands (which are covered under Nevada permit number NVR10I000), under permit number ORR10I000.

No

Indian Country within the state, except Fort McDermitt Reservation lands (which are covered under Nevada permit number NVR05I000), under permit number ORR05I000.

Yesb

Puerto Rico

The commonwealth, under permit number PRR100000.

No

The commonwealth, under permit number PRR050000.

No

Rhode Island

All Indian Country within the state, under permit number RIR10I000.

No

All Indian Country within the state, under permit number RIR05000I.

No

South Dakota

Indian Country within the state, as well as the portion of the Pine Ridge Reservation located in Nebraska and the portion of the lands within the former boundaries of the Lake Traverse Reservation located in North Dakota (except for the Standing Rock Reservation, which is covered under North Dakota permit number NDR10I000), under permit number SDR10I000.

No

Indian Country within the state, as well as the portion of the Pine Ridge Reservation located in Nebraska and the portion of the lands within the former boundaries of the Lake Traverse Reservation located in North Dakota (except for the Standing Rock Reservation, which is covered under North Dakota permit number NDR05I000), under permit number SDR05I000.

No

Texas

All Indian Country within the state, under permit number TXR10I000.

Discharges in the state that are not under the authority of the Texas Commission on Environmental Quality (formerly TNRCC), including activities associated with exploration, development, or production of oil or gas or geothermal resources, including transportation of crude oil or natural gas by pipeline, under permit number TXR10F000.

No

All Indian Country within the state, under permit number TXR05I000.

Facilities in the state not under the jurisdiction of the Texas Commission on Environmental Quality, except those on Indian Country lands, under permit number TXR05F000.

No

Utah

Indian country within the state, except the Goshute Reservation (which is covered under Nevada permit number NVR10I000) and the Navajo Reservation (which is covered under Arizona permit number AZR10I000), under permit number UTR10I000I.

No

Indian Country within the state, except Goshute and Navajo Reservation lands, permit number UTR05I000.

No

Vermont

Areas in the state subject to construction activity by a Federal Operator, under permit number VTR10F000.

Yesa

Areas in the state subject to industrial activity by a Federal Operator, under permit number VTR05F000.

No

Wake Island

The Islands of Midway Island and Wake Island, under permit number MWR100000.

No

The Islands of Midway Island and Wake Island, under permit number MWR050000.

No

Washington

All Indian Country within the state, under permit number WAR10I000.

Areas in the state, except those located on Indian Country lands, subject to construction activity by a Federal Operator, under permit number WAR10F000.

Yesa

All Indian Country within the state, under permit number WAR05I000.

Areas in the state, except those located on Indian Country lands, subject to industrial activity by a Federal Operator, permit number WAR05F000.

Yesb

Wisconsin

Indian Country within the state, except the Sokaogon Chippewa (Mole Lake) Community, under permit number WIR10I000.

Yesa

Indian Country within the state, except for facilities on Sokaogon Chippewa Community lands and Bad River Band of Lake Superior Tribe of Chippewa Indians lands, under permit number WIR05I000.

No

Wyoming

All Indian Country within the state, under permit number WYR10I000.

No

All Indian Country within the state, under permit number WYR05I000.

No

a See Part 9 of the CGP.
b See Part 9 of the MSGP.

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