Permitting & Compliance Resources
A curated collection of academic, government, industry, and other resources for environmental permitting and compliance, plus a directory of state, territorial, local, tribal, and EPA regional permitting agencies.
AL - ADEM
EPA Region 4 · Alabama
Location: State of Alabama
AL - JCDH
EPA Region 4 · Alabama
Location: Jefferson County
AK - EPA Region 10 - Indian Country
EPA Region 10 · Alaska
Location: Indian Country
AS - ASEPA
EPA Region 9 · American Samoa
Location: Islands of American Samoa
AZ - MCAQD
EPA Region 9 · Arizona
Location: Maricopa County except Tribal Lands
AZ - PCAQCD
EPA Region 9 · Arizona
Location: Pinal County except Tribal Lands
AZ - NNEPA
EPA Region 9 · Arizona
Location: Navajo Nation Tribal Land
AR - ADEQ
EPA Region 6 · Arkansas
Location: State of Arkansas except Indian Country
CA - CARB
EPA Region 9 · California
Location: State of California
CA - SWRCB - RB1
EPA Region 9 · California
Location: Del Norte, Glenn, Humboldt, Lake, Marin, Mendocino, Modoc, Siskiyou, Sonoma, and Trinity counties
CA - SWRCB - RB3
EPA Region 9 · California
Location: Santa Clara (south of Morgan Hill), San Mateo (southern portion), Santa Cruz, San Benito, Monterey, Kern (small portions), San Luis Obispo, Santa Barbara, Ventura (northern portion) counties
CA - SWRCB - RB5
EPA Region 9 · California
Location: Modoc, Shasta, Lassen, Plumas, Butte, Glenn, Colusa, Lake, Sutter, Yuba, Sierra, Nevada, Placer, Yolo, Napa (Northeast), Solano (West), Sacramento, El Dorado, Amador, Calaveras, San Joaquin, Contra Costa (East), Stanislaus, Tuolumne, Merced, Mariposa, Madera, Kings, Fresno, Tulare, Kern (very small portions of San Benito, San Luis Obispo) counties
Regional Water Quality Control Board (Region 7) - Colorado River Basin Region ↗ (opens in a new tab)
CA - SWRCB - RB7
EPA Region 9 · California
Location: Imperial, San Bernardino, Riverside, San Diego counties
CA - SWRCB - RB9
EPA Region 9 · California
Location: San Diego, Imperial, Riverside counties
CA - Amador County APCD
EPA Region 9 · California
Location: Amador County
CA - Bay Area AQMD
EPA Region 9 · California
Location: Alameda County, Contra Costa County, Marin County, Napa County, San Francisco County, San Mateo County, Santa Clara County, western portion of Solano County and southern portion of Sonoma County
CA - Calaveras County APCD
EPA Region 9 · California
Location: Calaveras County
CA - Eastern Kern APCD
EPA Region 9 · California
Location: Eastern portion of Kern County
CA - Feather River AQMD
EPA Region 9 · California
Location: Sutter County and Yuba County
CA - Great Basin Unified APCD
EPA Region 9 · California
Location: Alpine County, Inyo County, and Mono County
CA - Lake County AQMD
EPA Region 9 · California
Location: Lake County
CA - Mariposa County APCD
EPA Region 9 · California
Location: Mariposa County
CA - Modoc County APCD
EPA Region 9 · California
Location: Modoc County
CA - Monterey Bay ARD
EPA Region 9 · California
Location: Monterey County, Santa Cruz County, and San Benito County
CA - Northern Sierra AQMD
EPA Region 9 · California
Location: Nevada County, Sierra County, and Plumas County
CA - Placer County APCD
EPA Region 9 · California
Location: Placer County
CA - San Diego County APCD
EPA Region 9 · California
Location: San Diego County
CA - San Luis Obispo County APCD
EPA Region 9 · California
Location: San Luis Obispo County
CA - Shasta County AQMD
EPA Region 9 · California
Location: Shasta County
CA - South Coast AQMD
EPA Region 9 · California
Location: Los Angeles County (minus Antelope Valley), Orange County, Riverside County (western portion), San Bernardino County (western portion)
CA - Tuolumne County APCD
EPA Region 9 · California
Location: Tuolumne County
CA - Yolo-Solano AQMD
EPA Region 9 · California
Location: Yolo County and eastern portion of Solano County
CO - CDPHE
EPA Region 8 · Colorado
Location: State of Colorado except in Indian Country
CT - DEEP
EPA Region 1 · Connecticut
Location: State of Connecticut, except Mohegan and Mashantucket Pequot Tribal Trust Lands
CT - MEPD
EPA Region 1 · Connecticut
Location: All Mohegan Tribal Trust Lands
DC - DOEE
EPA Region 3 · District of Columbia
Location: Washington D.C.
GA - DNR
EPA Region 4 · Georgia
Location: State of Georgia
HI - DOH
EPA Region 9 · Hawaii
Location: The Islands of Hawai'i
ID - EPA Region 10 - Indian Country
EPA Region 10 · Idaho
Location: Indian Country
IN - IDEM
EPA Region 5 · Indiana
Location: State of Indiana
IA - EPA Region 7 - Indian Country
EPA Region 7 · Iowa
Location: Indian Country
KS - WYCO PHD
EPA Region 7 · Kansas
Location: Unified Government of Wyandotte County and Kansas City, Kansas
KY - DEP
EPA Region 4 · Kentucky
Location: State of Kentucky excluding Jefferson County
LA - LDEQ
EPA Region 6 · Louisiana
Location: State of Louisiana except Indian Country
ME - DEP
EPA Region 1 · Maine
Location: State of Maine
MA - MassDEP
EPA Region 1 · Massachusetts
Location: Commonwealth of Massachusetts
MI - EPA Region 5 - Indian Country
EPA Region 5 · Michigan
Location: Indian Country
MN - EPA Region 5 - Indian Country
EPA Region 5 · Minnesota
Location: Indian Country
MO - MoDNR
EPA Region 7 · Missouri
Location: State of Missouri except in Indian Country
MT - DEQ
EPA Region 8 · Montana
Location: State of Montana except in Indian Country
NE - DWEE
EPA Region 7 · Nebraska
Location: State of Nebraska except in Indian Country
NE - Omaha OAQC
EPA Region 7 · Nebraska
Location: Omaha
NV - NDEP
EPA Region 9 · Nevada
Location: State of Nevada except Clark County, Washoe County, and Indian Country
NV - Washoe County - NNPH
EPA Region 9 · Nevada
Location: Washoe County except Indian Country
NH - DES
EPA Region 1 · New Hampshire
Location: State of New Hampshire
NM - NMED
EPA Region 6 · New Mexico
Location: State of New Mexico except in Indian Country
NM - EPA Region 6 - Indian Country
EPA Region 6 · New Mexico
Location: Indian Country
NY - EPA Region 2 - 8 Tribal Nations
EPA Region 2 · New York
Location: 8 Tribal Nations
NC - Asheville-Buncombe AQA
EPA Region 4 · North Carolina
Location: City of Asheville and Buncombe County
NC - MCAQ
EPA Region 4 · North Carolina
Location: Mecklenburg County
ND - EPA Region 8 - Indian Country
EPA Region 8 · North Dakota
Location: Indian Country
OH - Ohio EPA
EPA Region 5 · Ohio
Location: State of Ohio
OK - EPA Region 6 - Indian Country
EPA Region 6 · Oklahoma
Location: Indian Country
OR - LRAPA
EPA Region 10 · Oregon
Location: Lane County
OR - EPA Region 10 - OCS
EPA Region 10 · Oregon
Location: Outer Continental Shelf (more than 3 miles off Oregon coastline)
PA - ACHD
EPA Region 3 · Pennsylvania
Location: Allegheny County
PR - DRNA
EPA Region 2 · Puerto Rico
Location: Commonwealth of Puerto Rico
SC - SCDES
EPA Region 4 · South Carolina
Location: State of South Carolina
SD - EPA Region 8 - Indian Country
EPA Region 8 · South Dakota
Location: Indian Country
TN - Chattanooga-Hamilton County APCB
EPA Region 4 · Tennessee
Location: City of Chattanooga and Hamilton County
TN - MSCHD
EPA Region 4 · Tennessee
Location: City of Memphis and Shelby County
TX - TCEQ
EPA Region 6 · Texas
Location: State of Texas except in Indian Country
VI - DPNR
EPA Region 2 · U.S. Virgin Islands
Location: All of the U.S. Virgin Islands
UT - EPA Region 8 - Indian Country
EPA Region 8 · Utah
Location: Indian Country
VA - DEQ
EPA Region 3 · Virginia
Location: State of Virginia
WA - Benton CAA
EPA Region 10 · Washington
Location: Benton County
WA - Olympic Region CAA
EPA Region 10 · Washington
Location: Clallam, Grays Harbor, Jefferson, Mason, Pacific and Thurston Counties
WA - Southwest CAA
EPA Region 10 · Washington
Location: Clark, Cowlitz, Lewis, Skamania and Wahkiakum Counties
WA - Yakima Regional CAA
EPA Region 10 · Washington
Location: Yakima County
WA - EPA Region 10 - OCS
EPA Region 10 · Washington
Location: Outer Continental Shelf (more than 3 miles off Washington coastline)
WI - WDNR
EPA Region 5 · Wisconsin
Location: State of Wisconsin except in Indian Country
WY - DEQ
EPA Region 8 · Wyoming
Location: State of Wyoming except in Indian Country
City of Huntsville Department of Natural Resources & Environmental Management ↗ (opens in a new tab)
AL - COHDNREM
EPA Region 4 · Alabama
Location: City of Huntsville
AK - DEC
EPA Region 10 · Alaska
Location: All Other Areas in Alaska
AK - EPA Region 10 - OCS
EPA Region 10 · Alaska
Location: Outer Continental Shelf (more than 3 miles off Alaska coastline, except off the North Slope)
AZ - ADEQ
EPA Region 9 · Arizona
Location: State of Arizona except for Maricopa, Pima, Pinal Counties and Tribal Lands
AZ - PDEQ
EPA Region 9 · Arizona
Location: Pima County except Tribal Lands
AZ - GRIC DEQ
EPA Region 9 · Arizona
Location: Gila River Indian Community Tribal Land
AZ - EPA Region 9 - Indian Country
EPA Region 9 · Arizona
Location: Tribal Lands in AZ, except for Navajo Nation and Gila River Indian Community
AR - EPA Region 6 - Indian Country
EPA Region 6 · Arkansas
Location: Indian Country
CA - CalEPA
EPA Region 9 · California
Location: State of California
CA - SWRCB - RB2
EPA Region 9 · California
Location: Alameda, Contra Costa, San Francisco, Santa Clara (north of Morgan Hill), San Mateo, Marin, Sonoma, Napa, Solano counties
CA - SWRCB - RB4
EPA Region 9 · California
Location: Los Angeles and Ventura counties (small portions of Kern and Santa Barbara counties)
CA - SWRCB - RB6
EPA Region 9 · California
Location: Modoc (East), Lassen (East side and Eagle Lake), Sierra, Nevada, Placer, El Dorado, Alpine, Mono, Inyo, Kern (East), San Bernardino, Los Angeles (N/E corner) counties
CA - SWRCB - RB8
EPA Region 9 · California
Location: Orange, Riverside, San Bernardino counties
CA - SWRCB
EPA Region 9 · California
Location: State of California
CA - Antelope Valley AQMD
EPA Region 9 · California
Location: Northeast portion of Los Angeles County
CA - Butte County AQMD
EPA Region 9 · California
Location: Butte County
CA - Colusa County APCD
EPA Region 9 · California
Location: Colusa County
CA - El Dorado County AQMD
EPA Region 9 · California
Location: El Dorado County
CA - Glenn County APCD
EPA Region 9 · California
Location: Glenn County
CA - Imperial County APCD
EPA Region 9 · California
Location: Imperial County
CA - Lassen County APCD
EPA Region 9 · California
Location: Lassen County
CA - Mendocino County AQMD
EPA Region 9 · California
Location: Mendocino County
CA - Mojave Desert AQMD
EPA Region 9 · California
Location: Northern portion of San Bernardino County, and the eastern portion of Riverside County
CA - North Coast Unified AQMD
EPA Region 9 · California
Location: Del Norte County, Humboldt County, and Trinity County
CA - Northern Sonoma County APCD
EPA Region 9 · California
Location: Northern Sonoma County
CA - Sacramento Metro AQMD
EPA Region 9 · California
Location: Sacramento County
CA - San Joaquin Valley APCD
EPA Region 9 · California
Location: San Joaquin County, Stanislaus County, Merced County, Madera County, Fresno County, Kings County, Tulare County, and the valley portion of Kern County
CA - Santa Barbara County APCD
EPA Region 9 · California
Location: Santa Barbara County
CA - Siskiyou County APCD
EPA Region 9 · California
Location: Siskiyou County
CA - Tehama County APCD
EPA Region 9 · California
Location: Tehama County
CA - Ventura County APCD
EPA Region 9 · California
Location: Ventura County
CA - EPA Region 9 - Indian Country
EPA Region 9 · California
Location: Indian Country
CO - EPA Region 8 - Indian Country
EPA Region 8 · Colorado
Location: Southern Ute Indian Reservation, La Plata County
CT - Mashantucket Pequot NRPRA
EPA Region 1 · Connecticut
Location: All Mashantucket Pequot Tribal Trust Lands
DE - DNREC
EPA Region 3 · Delaware
Location: State of Delaware
FL - DEP
EPA Region 4 · Florida
Location: State of Florida
GU - GEPA
EPA Region 9 · Guam
Location: Island of Guam
ID - DEQ
EPA Region 10 · Idaho
Location: All Other Areas in Idaho
IL - IEPA
EPA Region 5 · Illinois
Location: State of Illinois
IA - IDNR
EPA Region 7 · Iowa
Location: Statewide except in Indian Country
KS - KDHE
EPA Region 7 · Kansas
Location: State of Kansas except in Indian Country
KS - EPA Region 7 - Indian Country
EPA Region 7 · Kansas
Location: Indian Country, including Iowa Tribe, Kickapoo Tribe, Prairie Band Potawatomi Nation, Sac & Fox Nation of Missouri
KY - LMAPCD
EPA Region 4 · Kentucky
Location: Jefferson County
LA - EPA Region 6 - Indian Country
EPA Region 6 · Louisiana
Location: Indian Country
MD - MDE
EPA Region 3 · Maryland
Location: State of Maryland
MI - EGLE
EPA Region 5 · Michigan
Location: State of Michigan except Indian Country
MN - MPCA
EPA Region 5 · Minnesota
Location: State of Minnesota except Indian Country
MS - MDEQ
EPA Region 4 · Mississippi
Location: State of Mississippi
MO - EPA Region 7 - Indian Country
EPA Region 7 · Missouri
Location: Indian Country
MT - EPA Region 8 - Indian Country
EPA Region 8 · Montana
Location: Indian Country
NE - LLCHD
EPA Region 7 · Nebraska
Location: Lincoln, Lancaster County
NE - EPA Region 7 - Indian Country
EPA Region 7 · Nebraska
Location: Indian Country, including Iowa Tribe, Omaha Tribe, Ponca Tribe, Sac & Fox Nation of Missouri, Santee Sioux Nation and Winnebago Tribe
NV - DES
EPA Region 9 · Nevada
Location: Clark County except Indian Country
NV - EPA Region 9 - Indian Country
EPA Region 9 · Nevada
Location: Indian Country
NJ - DEP
EPA Region 2 · New Jersey
Location: State of New Jersey
NM - CABQ AQP
EPA Region 6 · New Mexico
Location: City of Albuquerque and Bernalillo County
NY - NYSDEC
EPA Region 2 · New York
Location: State of New York except in the 8 Tribal Nations
NC - DEQ
EPA Region 4 · North Carolina
Location: State of North Carolina
NC - FCOEAP
EPA Region 4 · North Carolina
Location: Forsyth County
ND - DEQ
EPA Region 8 · North Dakota
Location: State of North Dakota except in Indian Country
CNMI - DEQ
EPA Region 9 · Northern Mariana Islands
Location: Northern Mariana Islands
OK - ODEQ
EPA Region 6 · Oklahoma
Location: State of Oklahoma except in Indian Country
OR - DEQ
EPA Region 10 · Oregon
Location: All Other Areas in Oregon
OR - EPA Region 10 - Indian Country
EPA Region 10 · Oregon
Location: Indian Country
PA - PADEP
EPA Region 3 · Pennsylvania
Location: State of Pennsylvania
PA - Philadelphia AMS
EPA Region 3 · Pennsylvania
Location: Philadelphia, Pennsylvania
RI - DEM
EPA Region 1 · Rhode Island
Location: State of Rhode Island
SD - DANR
EPA Region 8 · South Dakota
Location: State of South Dakota except in Indian Country
TN - TDEC
EPA Region 4 · Tennessee
Location: State of Tennessee
TN - KCHD
EPA Region 4 · Tennessee
Location: Knox County
TN - Nashville–Davidson County MPHD
EPA Region 4 · Tennessee
Location: City of Nashville and Davidson County
TX - EPA Region 6 - Indian Country
EPA Region 6 · Texas
Location: Indian Country
UT - DEQ
EPA Region 8 · Utah
Location: State of Utah except Indian Country
VT - DEC
EPA Region 1 · Vermont
Location: State of Vermont
WA - ECY
EPA Region 10 · Washington
Location: State of Washington
WA - Northwest CAA
EPA Region 10 · Washington
Location: Island, Skagit and Whatcom Counties
WA - Puget Sound CAA
EPA Region 10 · Washington
Location: King, Kitsap, Pierce and Snohomish Counties
WA - Spokane Regional CAA
EPA Region 10 · Washington
Location: Spokane County
WA - EPA Region 10 - Indian Country
EPA Region 10 · Washington
Location: Indian Country
WV - DEP
EPA Region 3 · West Virginia
Location: State of West Virginia
WI - EPA Region 5 - Indian Country
EPA Region 5 · Wisconsin
Location: Indian Country
WY - EPA Region 8 - Indian Country
EPA Region 8 · Wyoming
Location: Indian Country
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