Future Mega-Conference Dates

Save the date for upcoming Onsite Wastewater Mega-Conferences!

October 20 - 23, 2024 - Doubletree Hotel and Spokane Convention Center, Spokane, Washington in cooperation with Washington On-Site Sewage Association (WOSSA) and the Oregon Onsite Wastewater Association (O2WA).

October 19 - 22, 2025 - Kalahari Resort and Conventions, Sandusky, Ohio in cooperation with Ohio Onsite Wastewater Association (OOWA).

October 25 - 28, 2026 - The Westin Westminster, Westminster, Colorado in cooperation with Colorado Professionals of Onsite Wastewater (CPOW).

2027 - To be determined