- Canadian Ground Water Association - Organization information and public education material on ground water and wells.
- GSA Hydrogeology Division - Programs, awards,and 2x/year newsletter of the Geological Society of America Hydrogeology Division.
- Illinois Groundwater Consortium - Working toward providing a scientifically valid basis for agricultural chemical management and regulatory decisions affecting groundwater.
- International Association of Hydrogeologists - Groundwater all over the world: organization information, journal contents, and links.
- National Ground Water Association - Groundwater scientists and engineers, as well as manufacturers and contractors in the water well industry.
- Wisconsin Ground Water Association - Non-profit volunteer organization advancing understanding of Wisconsin's ground water (scientific, technical, legal, educational, and public policy aspects).
