- IDPH Environmental Health publications relating to private water and for information regarding non-community public water supply, visit their online program handbook.
 
- Agency for Toxic Substances and Disease Registry, ToxFAQs provides information for each chemical which is listed alphabetically.
 
- American Ground Water Trust
 
- American Water Works Association
 
- Centers for Disease Control and Prevention’s (CDC’s) “ Contaminants in Well Water” web page lists the possible contaminants found in well water along with their health effects.
 
- Clean Water Action
 
- DrinkWell™ Well Water Testing – offers information on contaminants that your well water may be at risk for and how to test for them.
 
- Federal Safe Drinking Water Act Standards includes potential health effects from exposure to VOCs and other contaminants
 
- The Groundwater Foundation
 
- Illinois Association of Groundwater Professionals offers an online owner’s guide that includes checklists, tips and information on well records. Homeowners can also call (800) 990-2209 for assistance.
 
- Illinois EPA’s GIS Interactive Source Water Assessment Program (SWAP) ArcIMS Mapping Tool
 
- Illinois Groundwater Protection Class I Standards: The Parts are listed in numerical order; scroll down to 620.
 
- Illinois State Geological Survey provides Digital water well records and Hydrogeology
 
- Links relating to federal agencies, drinking water protection organizations, and environmental and public health organizations.
 
- McHenry County Health Department offers an online brochure “ Everything You Wanted to Know About Your Private Water Well System”
 
- National Drinking Water Clearinghouse
 
- National Ground Water Association
 
- IEPA's Right to Know law informational web page
 
- RiverSides Stewardship Alliance
 
- Rural Community Assistance Program
 
- PrivateWellClass.org
 
- University of Illinois at Urbana-Champaign, Water Quality web page
 
- U.S. EPA’s online publication titled, “ Drinking Water From Household Wells.” You can also download a pdf version or visit the Private Drinking Water Wells web site.
 
- U.S. EPA’s “ Water On Tap: What You Need To Know”
 
- U.S. EPA’s web site, “ What to Do After the Flood”
 
- U.S. EPA’s Drinking Water Contaminants web page includines information on microbes, radionuclides, inorganics, VOCs and SOCs.
 
- U.S. Geological Survey, Water Resources
 
- U.S. Water News Online
 
- Water Systems Council web page, Wellcare® Information Sheets provides numerous fact sheets on basic well information, components, maintenance, testing and treatment, and potential contaminants.
 
- Water Systems Council
 
- WaterWiser
 
- Wellowner.org
 
 
    
 
     
 - Kansas State University fact sheet on private well maintenance and protection, including a maintenance checklist. 
  
 - Maine’s Water and Environmental Testing Services
  
 - Minnesota Department of Health’s web page, “ VOCs: Volatile Organic Chemicals in Private Drinking Water Wells” 
  
 - New Hampshire Department of Environmental Services, Private Well Testing
  
 - Oregon State University Well Water Program
  
 - Pennsylvania Department of Environmental Protection, Groundwater Protection web page
  
 - Santa Clara Valley Water District publication – " A Guide for the Private Well Owner", includes groundwater diagrams, well maintenance and protection, water sampling and treatment. 
  
 - Tennessee Home*A*Syst fact sheet
  
 - University of Maryland Extension site includes anatomy of a well and schematic. 
  
 - University of Minnesota Extension Service web page, “ Groundwater Contamination,” contains a wide variety of information: 
  
 - University of Rhode Island Home*A*Syst’s web page contains a wealth of information regarding private sources for drinking water. 
  
 - The University of Wisconsin Madison’s web site, “ Help Yourself to a Healthy Home” offers a checklist of action steps for a safe private water supply. 
  
 - Wisconsin Department of Natural Resources, Wells web page
  
 - Wisconsin Department of Natural Resources web site, “ When Should I Test My Well Water?” Also includes information on Volatile Organic Chemicals in Drinking Water (VOCs).