International Society for Trenchless Technology (ISTT) logo International Society for Trenchless Technology (ISTT)
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The International Society for Trenchless Technology (ISTT) is a global association dedicated to the promotion and advancement of trenchless technology. Established in 1986, ISTT focuses on innovative methods for installing, rehabilitating, and inspecting underground utilities while minimizing surface disruption. Through education, technical resources, and events such as the No-Dig Conference, ISTT serves as a hub for professionals seeking sustainable, efficient solutions in infrastructure development. ISTT's worldwide network supports collaboration and technical excellence in the field of trenchless technology.
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International No-Dig 2025 Vancouver
NASTT No-Dig North & 41st ISTT International No-Dig Conference & Exhibition
10/27/2025 - 10/30/2025
International No-Dig Auckland 2026
42nd ISTT International No-Dig Conference & Exhibition
10/28/2026 - 10/29/2026
International No-Dig 2027 Milan
43th ISTT International No-Dig Conference & Exhibition
9/13/2027 - 9/16/2027
International No-Dig 2028
44th ISTT International No-Dig Conference & Exhibition
Dates: TBD



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