| American Council of Engineering Companies – Mississippi |
| Audubon Mississippi |
| Coastal Alabama Clean Water Partnership |
| Coastal Watershed Roundtable Forum |
| Ducks Unlimited |
| Earth Shores Foundation |
| Environmental Coalition of MS |
| Escatawpa River Society |
| Friends of Mississippi Public Lands |
| Gulf Islands Conservancy |
| Gulf Restoration Network |
| Jesus’ People Against Pollution |
| Keep Mississippi Beautiful / People Against Litter |
| Land Trust, MS Coastal Plains |
| Lower Mississippi River Conservation |
| Lower Pearl River Partnership |
| MS 2020 Network |
| MS Army National Guard |
| MS Asphalt Pavement Association |
| MS Association of Conservation Districts |
| MS Association of Planning and Development Districts |
| MS Association of Realtors |
| MS Outdoors Club |
| MS Engineering Society |
| MS Farm Bureau Federation |
| MS Fish & Wildlife Foundation |
| MS Forestry Association |
| MS Geological Society |
| MS Manufacturing Association |
| MS Municipal League |
| MS Rural Development Council |
| MS Rural Water Association |
| MS Sierra Club |
| MS Supervisors Association |
| MS Urban Forestry Council |
| MS Water & Pollution Control Operator’s Association |
| MS Water Well Contractors Association |
| MS Wildlife Federation |
| MS State University Geo Resources Institute |
| MS State University, Extension Service – Master Naturalist Program |
| Naval Oceanographic Office |
| Natural Resources Initiative |
| Pascagoula River Basin Alliance |
| Pearl River Coalition |
| Pearl River Basin Development District |
| Pearl River Valley Water Supply District |
| South Mississippi Environmental and Agricultural Coordination Organization |
| South Mississippi Watershed Forum |
| The Nature Conservancy |
| The North Mississippi Watershed Forum |
| Alabama / Tombigbee Clean Water Partnership |
| Wolf River Conservation Society |
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| And many individuals, businesses, and corporations. For contact information, please contact your Basin Coordinator. |