Triennial Review

What is the Triennial Review?

Federal regulations require that states hold public hearings at least once every three years to review applicable surface water quality standards and, as appropriate, adopt new or modified standards, taking into consideration public concerns, EPA guidance, and new scientific and technical information.  This process is called a triennial review.  The triennial review also provides an opportunity to discuss the priorities and commitments the agency makes with EPA and others regarding surface water quality standards.

The Environmental Regulatory Code version of LAC 33:IX, Water Quality, Subpart 1. Water Pollution Control, Chapter 11 Surface Water Quality Standards, can be accessed electronically at: 




The Current Triennial Review

The current triennial review cycle initiated on March 20, 2021 and a public hearing was held on April 28, 2021.  The Department is reviewing and addressing all submitted comments and preparing a Report of Findings document.  The Report of Findings will identify priorities for the Department regarding water quality standards revision efforts for the next three years.  After completion of the document, this webpage will be updated to include it.  It is estimated the document will be finalized before Spring 2022.   

Please e-mail WQ.Standards@la.gov if you have any questions related to the triennial review.