The Granite State Designers and Installers Association (GSDI) is one organization in New Hampshire working to protect the state’s water resources. Besides providing education and information to its 400 members, the group is closely connected to other organizations with similar...
Granite State Designers and Installers Association Unifies New Hampshire Industry Professionals
New Hampshire’s Granite State group promotes a unified front for wastewater professionals when it comes to new regulations and training requirements.
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