Louisiana's Water Quality Regulations (LAC 33:Chapter IX) require permits for the discharge of pollutants from any point source into waters of the state of Louisiana. This surface water discharge permitting system is administered under the Louisiana Pollutant Discharge Elimination System (LPDES) program. LDEQ became a state delegated to administer the NPDES Program in August of 1996. (Official LPDES Program Assumption Documents are available on the EPA Region 6 website.)
The Water Permits Division, within the Office of Environmental Services, consists of two LPDES Water Permitting Sections: Industrial Water Permits and Municipal & General Water Permits. Permitting responsibilities are distributed between the two sections based on facility type.
Click HERE to view draft individual LPDES permits currently at public notice.
General Permits (authorized under LAC 33:IX.2515) are written to cover one or more categories or subcategories of discharges within a geographic area, which can range from a specific watershed to a broad area such as the entire state.
|General Permit Number||Covers||Effective Date||Expiration Date||File Type|
|LAG030000||Discharges from Vessel Cleaning and Repair Operations and Shipyards (Effective Feb. 1, 2019; Modified on Jan. 17, 2020)||01/17/2020||01/31/2024|
|LAG110000||Discharges from Cement, Concrete and Asphalt Facilities||06/06/2019||06/05/2024|
|LAG260000||Discharges from oil and gas exploration, development and production facilities located within territorial seas of Louisiana.||04/16/2020||04/15/2025|
|LAG300000||Discharges associated with Dewatering of Petroleum Storage Tanks, Tank Beds, New Tanks and Excavations||12/08/2020||12/07/2025|
|LAG330000||Discharges from oil and gas exploration, development and production facilities located within coastal waters.||05/04/2021||05/03/2026|
|LAG380000||Discharges from Potable Water Treatment Plants||12/17/2020||12/16/2025|
|LAG420000||Short-Term and Emergency Discharges||04/4/2017||04/3/2022|
|LAG470000||Discharges from Automotive Dealerships, Paint and Body Shops, Motorcycle Dealerships, Recreational Vehicle Dealerships and Automotive Repair and Maintenance Shops||11/20/2019||11/19/2024|
|LAG480000||Discharges from Light Commercial Facilities||12/16/2020||12/15/2025|
|LAG490000||Discharges from Sand and Gravel Extraction Facilities||03/15/2021||03/14/2026|
|LAG530000||Sanitary discharges totaling less than 5,000 gpd||12/1/2017||11/30/2022|
|LAG540000||Sanitary discharges totaling less than 25,000 gpd||8/1/2018||7/31/2023|
|LAG560000||Sanitary discharges totaling less than 50,000 gpd||4/1/2020||3/31/2025|
|LAG570000||Sanitary discharges totaling less than 100,000 gpd||06/11/2019||06/10/2024|
|LAG670000||Discharges of Hydrostatic Test Wastewater||3/23/2018||3/22/2023|
|LAG750000||Discharges of Exterior Vehicle Washwater||4/26/2019||4/24/2024|
|LAG780000||Discharges from Construction, Demolition Debris and Woodwaste Landfills||10/1/2017||9/30/2022|
|LAG830000||Discharges resulting from the Cleanup of Petroleum UST Systems||1/11/2018||1/10/2023|
|LAG870000||Applications/Discharge of Pesticides into or near Waters of the State||04/26/2019||04/25/2024|
|LAR040000||Discharges from Small Municipal Separate Storm Sewer Systems||9/1/2018||8/31/2023|
Multi-Sector General Stormwater Permit. The link to the right is for the main permit document only. Due to file size, download the addenda here.
NOTE: The 2021 Draft MSGP received significant public comments. Water Permits Staff are working expeditiously to address the public comments, but reissuance will be delayed. Currently permitted facilities are covered and shall continue to follow the requirements of the expired MSGP.
|LAR100000||Storm Water Discharges from Construction Activities of 5 Acres or More||10/1/2019||9/30/2024|
|LAR200000||Storm Water Discharges from Small Construction Activities (equal to or greater than 1 acre but less than 5 acres)||3/20/2018||3/19/2023|
|LAR600000||General Permit for Storm Water Discharges Related to the Louisiana Department of Transportation and Development's Statewide Construction and Maintenance Activities Resulting in Land Disturbance||11/1/2016||10/31/2021|
Below are listing of LPDES permits issued by quarter. List should be posted by the 15th of the month following the quarter.
The issue date for individual LPDES permits is the date that the permit is signed by the signatory authority. This date can be found on the tan cover page included in individual LPDES permits.
The issue date for coverage under general LPDES permits is the date stamped on the cover letter mailed with the general permit.
|2021||April 2021 - June 2021||January 2021 - March 2021|
|2020||October - December 2020||July 2020 - September 2020||April 2020 - June 2020||January 2020 - March 2020|
|2019||October - December 2019||July 2019 - September 2019||April 2019 - June 2019||January 2019 - March 2019|
|2018||October - December 2018||July 2018 - September 2018||April 2018 - June 2018||January 2018 - March 2018|
Permit codes used in documents: NAP - New Application; MIM - Minor Modification; RAP - Renewal Application; MAM - Major Modification; GNP - General New Coverage; GRP - General Renewed Coverage; GMP - General Modified Coverage