National Ground Water Association
601 Dempsey Road
Westerville, Ohio 43081
USA
Phone 614 898.7791
(toll-free within the United States 800 551.7379)
Fax 614 898.7786
Email ngwa@ngwa.org

Websites:

http://www.ngwa.org/ —home site of NGWA

http://www.wellowner.org — information for well owners