Water Quality Standards and Assessment

Surface water management seeks to protect the quality of all waters of the state, including rivers, streams, bayous, lakes, reservoirs, wetlands, estuaries, and many other types of surface water. For more information on surface water quality data, standards, and assessment please email the Water Planning and Assessment Division.

Current Events

In preparation of the 2024 Integrated Report assessment, the LDEQ solicited third party data regarding those water body subsegments assessed by LDEQ with a public notice published on May 11, 2023. The deadline for receipt of data is Thursday, June 15, 2023.

2022 Louisiana Water Quality Integrated Report -  All 2022 IR documents have been updated based on corrections made after full approval by EPA of the 2022 IR on May 3, 2022. All corrections were public noticed between July 8, 2022 and August 11, 2022, with no comments received from the public or EPA. Therefore, all 2022 IR assessment are considered final and approved for all uses. 

For more information on the 2022 Louisiana Water Quality Integrated Report please contact Ms. Rachael Mathews at (225) 219-3188 or by email at Rachael.Mathews@LA.GOV

Water Quality Trading

Triennial Review - Surface Water Quality Standards for Louisiana

A Long-Term Vision for Assessment, Restoration, and Protection under the Clean Water Act Section 303(d) Program

All Other Activities, Web Maps and Reports