Water Quality Program

The Ohio-Kentucky-Indiana Regional Council of Governments (OKI) maintains the Water Quality Management Plan for Butler, Clermont, Hamilton and Warren Counties in southwest Ohio.  Water Quality Management Plans are required by Section 208 of the federal Clean Water Act to identify water pollution problems in metropolitan areas and recommend how to address them.  By federal law, states cannot issue discharge permits for wastewater treatment facilities that conflict with regional plans.  We work with local governments to determine who provides sewer service and the areas in which it will be provided, so that duplication of effort is avoided.

Ohio and 208

An Ohio EPA Story Map Regarding 208 Water Quality Management.

Southwestern Ohio Water Quality Management Plan Update Documents

On September 10, 2020 OKI’s Board of Directors adopted Amendment #45 to the Water Quality Management Plan for Butler, Clermont, Hamilton and Warren Counties. Amendment #45 updates Chapters 4 & 7 of the WQM Plan for the Ohio portion of the OKI region with current information about onsite treatment systems and areas with centralized sewer service and wastewater treatment facilities. Amendments are undertaken periodically to reflect changing circumstances.

Wastewater Treatment Facilities, Facility Planning Areas and Sewer Service Areas in Butler, Clermont, Hamilton and Warren Counties
Download Map PDF | Download Shape Files

Executive Summary

Table of Contents
Chapter 1 – Introduction and Overview
Chapter 2 – Water Resources in Southwest Ohio
Chapter 3 – Current and Projected Development
Chapter 4 – Management of On Site Systems
Chapter 5 – Management of Nonpoint Sources of Pollution
Chapter 6 – Watershed Planning in Southwest Ohio
Chapter 7 – Wastewater Facilities Planning
Chapter 8 – Ongoing Areawide Water Quality Management Planning
Appendix A – Watershed and Large River Assessments
Appendix B – Stream Database Guide | Stream Database Glossary | Download GIS Shapefiles (Compressed ZIP file)
Appendix B –  Stream Database
Appendix C – Impervious Surface Analysis

Grants and Special Programs

OKI coordinates and manages efforts for a number of water quality related initiatives, studies and committees.  Through collaboration with local governments and agencies in the region, OKI has also been successful in obtaining grants for projects.

Sharon Creek – Mill Creek Nonpoint Source Implementation Strategic Plan
Congress Run – Mill Creek Nonpoint Source Implementation Strategic Plan
Great Miami Runoff Reduction Project
St. Clair Township Comprehensive Plan
Great Miami Drinking Water Protection Project
Mill Creek Headwaters Project
Stream Restoration Projects
Taylor Creek Watershed Study
West Fork Mill Creek Corridor Improvement Plan
Relative Densities of Tree Canopy in Butler, Clermont, Hamilton and Warren Counties, Ohio