VIRGINIA DEPARTMENT OF HEALTH
http://www.vdh.state.va.us/

DIVISION OF WATER SUPPLY ENGINEERING (DWSE)
http://www.vdh.state.va.us/dwse/index.htm

Source Water Assessment Program
http://www.vdh.state.va.us/dwse/swap.htm

DWSE Reference Library and Frequently Asked Questions
http://www.vdh.state.va.us/dwse/library.htm#Library

OWP Field Offices (Map or Alphabetical Listing)
http://www.vdh.state.va.us/dwse/va_map.htm

WATER RESOURCES DIVISION
http://water.usgs.gov

USGS Reston Chlorofluorocarbon Laboratory
http://water.usgs.gov/lab/cfc/

USGS Drinking Water Programs
http://water.usgs.gov/owq/dwi/index.html

USGS Drinking Water Initiative
http://www.usgs.gov/themes/FS-047-97/

Summary of Major USGS Programs and Products Useful for Conducting Source-Water and Watershed Assessments
http://wa.water.usgs.gov/epa_tribes.handout.980707.1.html

A National Model for Assessing the Susceptibility of Surface-Water Supplies to Source-Area Contamination
http://water.usgs.gov/nawqa/sparrow/drink/dwater.html

U.S. GEOLOGICAL SURVEY
http://www.usgs.gov/

BIOLOGICAL RESOURCES DIVISION
http://biology.usgs.gov/

GEOLOGIC DIVISION
http://geology.usgs.gov/index.shtml

NATIONAL MAPPING DIVISION
http://mapping.usgs.gov/

VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY
http://www.deq.state.va.us/

GROUND WATER PROTECTION STEERING COMMITTEE
http://www.deq.state.va.us/gwpsc/home.html

U.S. ENVIRONMENTAL PROTECTION AGENCY
http://www.epa.gov/

USEPA OFFICE OF WATER
http://www.epa.gov/OW/

USEPA Source Water Assessment and Protection
http://www.epa.gov/ogwdw/protect.html 

USEPA Virginia Drinking Water
http://www.epa.gov/ogwdw/dwinfo/va.htm

VIRGINIA WATER RESOURCES RESEARCH CENTER
http://www.vwrrc.vt.edu/