Affiliations

NASTT is an engineering society of individuals, public organizations and private companies with strong beliefs in the practical, social and environmental benefits of trenchless technology. Founded in 1990, NASTT represents more than 1,600 members throughout the U.S.A and Canada who all promote better and more responsible ways to manage our underground infrastructure. NASTT’s mission is to advance trenchless technology and to promote its benefits for the public and the natural environment by increasing awareness and knowledge through technical information dissemination, research and development, education and training. 

NASTT strives to provide a representative voice for all sectors of the trenchless technology industry. For 25 years, the all-volunteer members of NASTT have presented non-commercial information seminars and training about these “green alternative” engineering methods to North American communities.

The International Society for Trenchless Technology (ISTT) was established in September 1986 as a United Kingdom private limited company with the object "to advance the science and practice of trenchless technology for the public benefit..." and "to promote education, training, study and research in the said science and practice for the public benefit, and to publish the useful results of the same." In the years that followed, ISTT affiliated with regional trenchless societies located throughout the world to advance these objectives globally. 

ISTT has 28 Affiliated Societies. All recorded members of an Affiliated Society are members of ISTT. In addition to Affiliated Society members, ISTT has a limited number of members who reside in regions where no Affiliate Society exits.