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 Previous Triennial Review

A previous triennial review for the Surface Water Quality Standards of Louisiana began on January 20, 2016 and the results of these triennial review efforts were developed into a rule (WQ097) which updated portions of the water quality standards found in LAC 33:IX.Chapter 11.  The final rule for WQ097 was published in the November 2020 edition of the Louisiana Register and approved by EPA on February 1, 2021. 

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: 


Triennial Cleanup Rule (WQ108)

Four errors were found in the text of the previous triennial review (WQ097): 1) the deletion of the word “use” at LAC 33:IX.1109.C; 2) the extraneous word “are” at LAC 33:IX.1109.C.3.a; & 3) and 4) inaccurate descriptions of Subsegments 031002 and 041901 at LAC 33:IX.1123.Table 3.  This cleanup rule (WQ108) will correct these four errors.  This rule will appear in the April 2021 edition of the Louisiana Register and will have a public comment period that expires at 4:30 p.m. on June 1, 2021.  A public hearing will be held on May 25, 2021 at 1:30 p.m. in the Galvez Building, Oliver Pollack Conference Room.  Additional information can be found at: https://www.doa.la.gov/doa/osr/louisiana-register/

The Current Triennial Review

The current triennial review cycle initiates on March 20, 2021.  The notice of public hearing and request for comments can be found here: https://www.doa.la.gov/doa/osr/louisiana-register/. A public hearing will be held via Zoom on April 28, 2021, at 1:30 p.m.  Interested persons are invited to attend and submit oral comments via PC, Mac, Linux, iOS or Android at  https://deqlouisiana.zoom.us/j/84625190124?pwd=ZVVxeXIyMStOcTFVUURTcHlHVVlrQT09 using the password: 382195 or by telephone by dialing 636-651-3182 and entering conference code 725573. 

Interested persons are invited to attend and submit oral comments on any aspect of the water quality standards which they would like the Department to consider. Interested persons may also submit written comments. Comments should include the name of the commenter and the organization that they are representing, if appropriate, and are due no later than 4:30 p.m., May 5, 2021, and should be sent to Jamie Phillippe, Office of Environmental Assessment, Water Planning and Assessment Division, P.O. Box 4314, Baton Rouge, LA 70821-4314. Electronic comments may be submitted via e-mail to WQ.Standards@la.gov.

At a later date, the Department will review and address all submitted comments and issue a Report of Findings.  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.   

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