Registration Opening Timeline

March 18, 2026
Premium Sponsorship Registration
Pre-Registration Required

April 15, 2026
General Exhibitor Booth Registration
Pre-Registration Required

April 16, 2026
Attendee Registration
 
 

2025 Annual Seminar

RUBY JUBILEE - 40th TRI-STATE SEMINAR

The evolution of water science continues today, and our role as water industry professionals is more important than ever.

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Almost 4,800 participants from 5 countries and 41 US states attended nearly 190 technical sessions, 18 workshops, and 8 tours during the 2025 Tri-State Seminar.

Our address

PO Box 11220, Tucson, AZ 85734