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Onsite Wastewater Mega-Conference

See you in Spokane October 20-23! 

In recognition of the 50th anniversary of Expo '74 in Spokane, WA, the first environmentally-focused World's Fair, the Mega-Conference theme for 2024 is:

Celebrating Tomorrow’s Environment: Clean Water for the Future

  • The Call for Abstracts is now open through May 28.
  • The Hotel Room Block is also now available.
  • Exhibitor and Attendee conference registration will open late spring / early summer of 2024.

Don't Miss Out on the Onsite Event of the year!

The Onsite Wastewater Mega-Conference is a national, collaborative effort between the National Onsite Wastewater Recycling Association (NOWRA), the National Association of Wastewater Technicians (NAWT), and the State Onsite Regulators Association (SORA). 

The Mega-Conference is the largest event of its kind and offers onsite/decentralized professionals the highest quality education and training available.

The 2024 Onsite Wastewater Mega-Conference will be held October 20 - 23, 2024 in Spokane, Washington in cooperation with NOWRA's state affiliates, the Washington On-Site Sewage Association (WOSSA) and the Oregon Onsite Wastewater Association (O2WA).

Join the country's go-to onsite wastewater organization for training opportunities, industry updates, & professional services—and to make sure your voice is heard in Washington.

Become a Member