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Granite State Designers and Installers Association is New Hampshire's trade association for those working with on-site subsurface wastewater disposal systems. This website provides background about the organization and useful information for homeowners such as the care and maintenance of septic systems and how to find a qualified septic designer, installer, and evaluator.  Professionals will find links to all rules and laws concerning septic systems as well as a complete listing of a calendar of events.

 News & Events
  September 29, 2014
Soils Field Day
We regret that our soils field day program is sold out! No additional registrations can be taken at this time.  
  September 30, 2014
GSDI Board of Directors Meeting
GSDI Board of Directors Meeting Executive Office 53 Regional Drive, Suite 1 Concord, NH 03301 4:30 pm
  October 28, 2014
GSDI Board of Directors Meeting
GSDI Board of Directors Meeting Executive Office 53 Regional Drive, Suite 1 Concord, NH 03301 4:30 pm
  November 25, 2014
GSDI Board of Directors Meeting
GSDI Board of Directors Meeting Executive Office 53 Regional Drive, Suite 1 Concord, NH 03301 4:30 pm
  March 16, 2015
2015 Spring Septic System Conference & Exposition
Attendee program and registration information will be made available after January 1, 2015. Exhibitor registration information will be made available in early Fall 2014....
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Welcome to Granite State Designers and Installers : Granite State Designers and Installers