National Water Groups

All about Water hosted by Berkey Filters, has a wide variety of facts and properties about water

Ground Water Protection Council

Midwest Technical Assistance Center for Small Public Water Systems (MTAC)

National Drought Mitigation Center A center located at the University of Nebraska- Lincoln helping people and institutions develop and implement measures to reduce societal vulnerability to drought.

National Ground Water Association Hotline for private water well owners >>855/H20-WELL

National Well Owners Association

Small Water Supply.org A resource for small water supply operators, including homeowners.

USEPA Sole Source Aquifers: more info

USEPA Office of Ground Water & Drinking Water

USEPA Watersense page

USGS Glossary of Water Science Terms

USGS Water Resources Glossary

USGS Illinois District

USGS National Geospatial Data Clearinghouse - General Information

Water Information Center, Water Science and Technology Board of the National Academies

The Water Page Promotes sustainable water resources management and use, emphasizing efforts in Africa and other developing regions.