For information on the hydrologic sciences and its Hydrology Section, contact

2000 Florida Avenue, NW
Washington, DC 20009-1231
Tel: (800) 966-2481
Tel: (202) 462-6900
Fax: (202) 777-7393
Email: service@agu.org
http://www.agu.org

For information on certification, student chapters, and related organizations, contact

PO Box 3948
Parker, CO 80134-1443
Tel: (844) 795-8574
Tel: (303) 339-0523
Fax: (720) 496-4974
Email: admin@aihydrology.org
https://www.aihydrology.org

For information on water quality and supply, contact

6666 West Quincy Avenue
Denver, CO 80235-3098
Tel: (800) 926-7337
Tel: (303) 794-7711
Fax: (303) 347-0804
http://www.awwa.org

For information on grants, internships, its Hydrogeology Division, and issues in geoscience, contact

PO Box 9140
Boulder, CO 80301-9140
Tel: (800) 472-1988
Tel: (303) 357-1000
Fax: (303) 357-1070
https://community.geosociety.org/hydrodivision/home

For information on certification and careers, contact

601 Dempsey Road
Westerville, OH 43081-8978
Tel: (800) 551-7379
Tel: (614) 898-7791
Fax: (614) 898-7786
Email: customerservice@ngwa.org
http://www.ngwa.org

For general information about groundwater, visit the following Web site

1200 Pennsylvania Avenue, NW
Washington, DC 20460-0001
Tel: (202) 564-4700
https://www.epa.gov/ground-water-and-drinking-water

For information on careers and groundwater, contact

12201 Sunrise Valley Drive
Reston, VA 20192-0002
Tel: (888) 275-8747
Tel: (703) 648-5953
https://www.usgs.gov