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

Water Data Portal - Surface water quality data collected by LDEQ at locations throughout the state.

2018 Water Quality Integrated Report Public Notice - Due to issues with the availability of the required documents on the webpage during the initial public notice period, the public notice period will now begin on June 22, 2018 and will conclude at 4:30 p.m. on July 23, 2018. The preceeding link provides access to the documents available for public comment. 

Water Quality Trading

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