Field directory
National Compliance Directory
Direct access to Notice of Intent (NOI) portals, state-specific SWPPP checklists, and agency contacts for all 50 states.
View Alabama GuideAlabama
AL
Alabama Dept. of Environmental Management (ADEM)
NPDES General Permit ALR100000
Agency: 334-271-7700
View Alaska GuideAlaska
AK
Alaska Dept. of Environmental Conservation (DEC)
APDES Construction General Permit (CGP)
Agency: 907-269-6285
View Arizona GuideArizona
AZ
Arizona Dept. of Environmental Quality (ADEQ)
AZPDES Construction General Permit (CGP)
Agency: 602-771-2300
View Arkansas GuideArkansas
AR
Arkansas Dept. of Energy and Environment (DEQ)
NPDES General Permit ARR150000
Agency: 501-682-0623
View California GuideCalifornia
CA
State Water Resources Control Board (SWRCB)
Construction General Permit (2022 CGP)
Agency: 1-866-563-3107
View Colorado GuideColorado
CO
Colorado Dept. of Public Health & Environment (CDPHE)
COR400000 Stormwater Discharge Permit
Agency: 303-692-3500
View Connecticut GuideConnecticut
CT
Connecticut DEEP
General Permit for Discharge of Stormwater
Agency: 860-424-3000
View Delaware GuideDelaware
DE
Delaware DNREC
NPDES Construction General Permit
Agency: 302-739-9921
View Florida GuideFlorida
FL
Florida Department of Environmental Protection (FDEP)
NPDES Generic Permit for Stormwater Discharge
Agency: 850-245-8336
View Georgia GuideGeorgia
GA
Georgia EPD
NPDES General Permit No. GAR100000
Agency: 404-463-1511
View Hawaii GuideHawaii
HI
Hawaii Dept. of Health (DOH)
NPDES General Permit (Appendix C)
Agency: 808-586-4309
View Idaho GuideIdaho
ID
Idaho Dept. of Environmental Quality (DEQ)
Idaho Construction General Permit (CGP)
Agency: 208-373-0502
View Illinois GuideIllinois
IL
Illinois EPA
General NPDES Permit ILR10
Agency: 217-782-0610
View Indiana GuideIndiana
IN
Indiana DEM (IDEM)
Construction Stormwater General Permit (CSGP)
Agency: 317-232-8603
View Kansas GuideKansas
KS
Kansas Dept. of Health and Environment (KDHE)
General Permit for Construction Stormwater
Agency: 785-296-5545
View Kentucky GuideKentucky
KY
Kentucky Division of Water (DOW)
KYR10 General Permit
Agency: 502-564-3410
View Louisiana GuideLouisiana
LA
Louisiana DEQ (LDEQ)
LPDES General Permit LAR100000
Agency: 225-219-3181
View Maine GuideMaine
ME
Maine DEP
Maine Construction General Permit (MCGP)
Agency: 207-287-7688
View Maryland GuideMaryland
MD
Maryland Dept. of the Environment (MDE)
General Permit for Construction (20-CP)
Agency: 410-537-3000
View Massachusetts GuideMassachusetts
MA
US EPA Region 1 (Direct Implementation)
EPA Construction General Permit (CGP)
Agency: 617-918-1111
View Michigan GuideMichigan
MI
Michigan EGLE
Permit-by-Rule 323.2190
Agency: 800-662-9278
View Minnesota GuideMinnesota
MN
Minnesota Pollution Control Agency (MPCA)
MN General Stormwater Permit (CSW)
Agency: 651-296-6300
View Mississippi GuideMississippi
MS
Mississippi DEQ (MDEQ)
Large Construction General Permit
Agency: 601-961-5171
View Missouri GuideMissouri
MO
Missouri DNR
MO-R100000 General Permit
Agency: 573-751-1300
View Montana GuideMontana
MT
Montana DEQ
General Permit for Storm Water (MTR100000)
Agency: 406-444-2544
View Nebraska GuideNebraska
NE
Nebraska DEE
NPDES General Permit CSW-2021
Agency: 402-471-2186
View Nevada GuideNevada
NV
Nevada NDEP
Stormwater General Permit NVR100000
Agency: 775-687-9400
View New Hampshire GuideNew Hampshire
NH
US EPA Region 1 (Direct)
EPA Construction General Permit (CGP)
Agency: 617-918-1111
View New Jersey GuideNew Jersey
NJ
NJ DEP
RFA Construction General Permit (5G3)
Agency: 609-633-7021
View New Mexico GuideNew Mexico
NM
US EPA Region 6 (Direct)
EPA Construction General Permit (CGP)
Agency: 214-665-2200
View New York GuideNew York
NY
NYS Dept. of Environmental Conservation (DEC)
SPDES General Permit GP-0-25-001
Agency: 518-402-8109
View North Carolina GuideNorth Carolina
NC
NC DEQ
NCG01 Construction General Permit
Agency: 919-707-9100
View North Dakota GuideNorth Dakota
ND
North Dakota DEQ
NDPDES General Permit NDR10-0000
Agency: 701-328-5210
View Ohio GuideOhio
OH
Ohio EPA
NPDES General Permit OHC000005
Agency: 614-644-2001
View Oklahoma GuideOklahoma
OK
Oklahoma DEQ
OKR10 Construction General Permit
Agency: 405-702-8100
View Oregon GuideOregon
OR
Oregon DEQ
NPDES 1200-C General Permit
Agency: 503-229-5696
View Pennsylvania GuidePennsylvania
PA
Pennsylvania DEP
PAG-02 General Permit
Agency: 717-787-2147
View Rhode Island GuideRhode Island
RI
Rhode Island DEM
RIPDES Construction General Permit
Agency: 401-222-4700
View South Carolina GuideSouth Carolina
SC
South Carolina DHEC
NPDES General Permit SCR100000
Agency: 803-898-3432
View South Dakota GuideSouth Dakota
SD
South Dakota DANR
General Permit SDR100000
Agency: 605-773-3351
View Tennessee GuideTennessee
TN
Tennessee TDEC
TNR100000 Construction General Permit
Agency: 1-888-891-8332
View Texas GuideTexas
TX
Texas Commission on Environmental Quality (TCEQ)
TPDES General Permit TXR150000 (2023)
Agency: 512-239-4671
View Utah GuideUtah
UT
Utah DEQ
UPDES Construction General Permit (CGP)
Agency: 801-536-4300
View Vermont GuideVermont
VT
Vermont DEC
Construction General Permit 3-9020
Agency: 802-828-1115
View Virginia GuideVirginia
VA
Virginia DEQ
VPDES Construction General Permit (VAR10)
Agency: 804-698-4000
View Washington GuideWashington
WA
Department of Ecology
Construction Stormwater General Permit (CSWGP)
Agency: 360-407-6000
View West Virginia GuideWest Virginia
WV
West Virginia DEP
NPDES General Water Pollution Control Permit
Agency: 304-926-0499
View Wisconsin GuideWisconsin
WI
Wisconsin DNR
WPDES Construction Site Storm Water Runoff General Permit
Agency: 608-267-7694
View Wyoming GuideWyoming
WY
Wyoming DEQ
Large Construction General Permit
Agency: 307-777-7781