Beginning Nov. 1, 2009, the National Ground Water Association (NGWA) will offer its voluntary certification program exams for water well system contractors through computer testing centers only.

Many states use NGWA’s certified well driller (CWD) and certified pump installer (CPI) exams as part of their licensure for water well drilling contractors and/or pump installers.

To register for an examination, call 800-211-2754 (360-896-9111 if calling from outside North America). For more information on NGWA's certification programs, visit, or call 800-551-7379.