- Delaware Department of Natural Resources & Environmental Control
- District of Columbia Water & Sewer Authority
- Maryland Department of the Environment - Water Information Center
- Pennsylvania Department of Environmental Protection - Water Management
- Virginia Department of Environmental Quality - Water Quality Programs
- West Virginia Department of Environmental Protection - Division of Water & Waste Management
- West Virginia Department of Natural Resources
- Delaware Division of Public Health
- District of Columbia Department of Health
- Maryland Department of the Environment - Public Health
- Pennsylvania Department of Health
- Virginia Department of Health
- West Virginia Department of Health & Human Resources
Delaware Rural Water Association - Offers on-line and classroom training.
The Maryland Center for Environmental Training - Provides MDE approved courses for all levels of expertise from entry level classes to supervisory course.
The Eastern Pennsylvania Water Pollution Control Association, Inc., an affiliate of the Water Environment Federation and the Pennsylvania Water Environment Association- Offers many seminars recognized by the state.
The Pennsylvania Water Environment Association - Offers many seminars for the wastewater treatment plant operator, including a "short course" and an annual conference.
Pennsylvania Rural Water Association - Offers seminars and conferences for the water treatment plant operator.
Virginia Rural Water Association - Offers seminars for the water treatment plant operator.
The West Virginia Environmental Training Center - Offers many one and multi-day classroom training for both water and wastewater plant operators.
Consumer Water Center of the American Water Works Association has a to raise public awareness and understanding of drinking water issues.
Groundwater Foundation - Detailed information on the groundwater resources in your community.
National Environmental Publications Internet Site (NEPIS) - Offers one-stop shopping for thousands of full-text online EPA documents.
U.S. Geological Survey (USGS) - Water Resources of the U.S.