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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.

Advanced Registration is now closed for the 2019 GSDI Spring Septic System Conference & Expo which will be held on Monday, March 25 and Tuesday, March 26, 2019 at the Doubletree by Hilton Manchester Downtown in Manchester, NH.  A limited number of walk-ins can be accepted.  If you must walk-in, please click on the onsite registration form link below.  Print it out, complete it and plan to bring it with you along with your method of payment. 

Credits Update!  The program has been approved for six (6) continuing edcuation contact hours each day by NHDES for both designers and installers.  The NH Board of Registration of Septic Evaluators has also approved our program for six (6) credits each day.  

Click here to view, download and print the tentative program and registration form.

Click here for the walk-in registration form only

 

 

 

 

http://gsdia.org
 News & Events
  March 25, 2019
2019 GSDI Spring Septic System Conference & Expo
Advanced Registration is now closed for the 2019 GSDI Spring Septic System Conference & Expo which will be held on Monday, March 25 and Tuesday, March 26, 2019 at the...
  May 15, 2019
Granite State Certified Septic Evaluator Training Program
Our next Certified Septic Evaluators Traning Program will be held on Wednesday, May 15 (classroom) and Saturday, May 18, 2019 (field program and field exam) and required...
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