Since 1985, Tri-State Seminar, LLC (TSS) has been providing affordable, high-quality educational training opportunities to water and wastewater industry professionals across the United States. The technical sessions and workshops hosted at our annual three-day seminar are designed to provide continuing education, professional development, and technical advances to support the mission and vision of our Member Associations: AZ Water Association (AZ Water), California Water Environment Association (CWEA), and the Nevada Water Environment Association (NWEA).