Water Quality Standards and Assessment

Water quality in Louisiana is managed under the two broad areas of surface water and groundwater. 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. The Aquifer Evaluation and Protection Unit seeks to protect the quality of all waters found in underground aquifers as well as the surface water sources of that groundwater. 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 Louisiana Department of Environmental Quality's (LDEQ's) 2018 Clean Water Act section 303(d) List, the LDEQ is soliciting any and all information and data regarding those water body subsegments assessed by LDEQ. The public notice period for this process begins Wednesday, September 20, 2017 and ends Monday, October 23, 2017. The full public notice statement can be found here. For any questions, contact Al Hindrichs at (225) 219-3189 or al.hindrichs@la.gov.

2016 Triennial Review - Surface Water Quality Standards for Louisiana

FINAL 2016 Louisiana Water Quality Inventory: Integrated Report (305(b)/303(d))Water Quality Assessment - On February 10, 2017 the 2016 Louisiana Water Quality Integrated Report was approved by EPA with one Integrated Report Category (IRC) revision to one subsegment. All other portions of the report have been fully approved by EPA. The assessments contained in the report are now considered final.


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

All Other Activities and Reports