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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 11, 2014
Special Membership Meeting & Dinner Program
GSDI Will Host a Special Membership Meeting to Vote on Proposed Bylaw Changes with an Accompanying Dinner and Training Program!   Meeting & Dinner Program:...
  September 29, 2014
Soils Field Day
SOILS IDENTIFICATION AND ANALYSIS:  FOCUSING ON UPLAND AND HYDRIC SOILS  9:00 a.m. – 4:00 p.m.   Part I: Riverhill Grange, 32 Horsehill Road,...
  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
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Welcome to Granite State Designers and Installers : Granite State Designers and Installers