There are four categories of committees for the Commission: standing committees, program advisory committees, advisory committees, and special committees.  The committees' duties and functions are assigned to them as deemed necessary.  Members of the committees are appointed by the Chairman or by the Commission, and the members do not need to be a Commissioner or a proxy.

Standing Committees

-Audit Committee
-Congressional Liaison Committee
-Executive Committee
-Nominating Committee
-Pension Trust Committee
-Personnel Committee
-Pollution Control Standards Committee
-Program and Finance Committee
-Research Committee
-Water Quality Review Committee
-Water Resources Committee

Program Advisory Committees

-ORSANCO/Ohio River Users Program Advisory Committee
-Public Information Program Advisory Committee
-Registry of Distinguished Operators Program Advisory Committee
-Special Project Steering Committees

Advisory Committees

-Industry Action Committees
-Public Interest Advisory Committee
-Publicly Owned Wastewater Treatment Works Advisory Committee
-Water Users Advisory Committee

Special Committees