- American Heritage Rivers
 - Information regarding the President's programme to select stretches of America's rivers to be American Heritage Rivers. - Bioassessment and Biocriteria
- Recording and analyzing the presence, condition, and numbers of types of fish, insects, algae, and plants to provide information about the health of specific bodies of water.
- Drinking Water Activities for Teachers & Students
- From the EPA's Office of Water.
- Ground Water and Drinking Water
- Protects public health by ensuring safe drinking water and protecting ground water. Includes local drinking water quality, protection, and standards information.
- National Estuary Program
- Established in 1987 by amendments to the Clean Water Act to identify, restore, and protect nationally significant estuaries of the United States.
- Nonpoint Source Pollution Control Program
- Online copies of EPA manuals, factsheets, and photographs describing nonpoint source pollution.
- Office of Wastewater Management (1)
- Office of Water
- Information on water quality, regulations, volunteer monitoring, estuaries, drinking and ground water, wetlands, watersheds.
- Office of Wetlands, Oceans, and Watersheds (10)
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