International Ozone Association

Pan American Group (PAG) 




2025 IOA World Congress

August 25-29 | Omni Atlanta at Centennial Park, Georgia, USA



2025 IOA World Congress

August 25-29 | Omni Atlanta at Centennial Park, Georgia, USA

REGISTRATION INFORMATION

Attendee Registration        Exhibitor Registration        Sponsor Registration - Coming 8/1!

Guest/Spouse Program Registration        2025 Registration Rates


More information and resources can be found below. 
We will be continuously updating this page and sending announcements via email leading up to the World Congress. Please don't hesitate to reach out to us if you have any questions!

About the Conference

The IOA World Congress is an international conference and exposition showcasing leading edge technologies and in-depth information for municipal drinking water, wastewater, water reuse, industrial process, and medical applications with focus on Ozone and AOP technology and application.



Technical Program

The 2025 Technical Program features a 1-day workshop (separate ticketed event) followed by 3 days of technical presentations on subjects such as drinking water treatment, water reuse, industrial applications, medical applications, and innovative new techniques and technologies, etc.  

Presenting authors may have their work considered for publication in Ozone Science & Engineering (OS&E), the official Journal of the International Ozone Association. 

All conference attendees will receive complimentary access to the World Congress Proceedings after the conference concludes.

2025 Keynote Speaker

2025 Technical Program    Schedule at a Glance


Ozone Basics Workshop    Technical Tour


Georgia Aquarium Banquet     ROPES Program

(*All programs/schedules are subject to change.)

Guest/Spouse Program

Explore Atlanta with our Guest/Spouse Program during the 2025 IOA World Congress! Enjoy a stroll through the beautiful Atlanta Botanical Garden, go behind the scenes at Mercedes-Benz Stadium, or discover the World of Coca-Cola.

See the flyer below for dates, times, and registration details.

Guest/Spouse Program Flyer

Guest/Spouse Program Registration

More Registration Information

Benefits of Attending Include:
  • 3 Days of Technical Presentations by Ozone Experts
  • Engaging Roundtable Discussions led by Ozone Industry
  • Panel Discussions with Ozone Leaders
  • Interactive Workshop for those who are new to Ozone
  • Continuing Education Units (CEUs) for select states
  • Exhibit Hall with leading manufacturers of Ozone equipment
  • Networking opportunities to connect with International leaders and practitioners and to learn more about Ozone applications
  • Technical Tours to learn more about local Ozone installations
  • Local Cultural Tours for guests/spouses of attendees

Continuing Education Units

The IOA is please to provide Operator Continuing Education Units (CEUs) for the IOA World Congress. We are currently applying for CEU approval with the key states listed below.

Approved:

California - 16 Hours, Drinking Water

Texas (Pr#0891/Course#1007) - 16 Hrs DW+WW

Pending: Georgia


Utility Registration Bundle!

Utilities and other end users of ozone registering three conference attendees will receive a complimentary registration for a fourth attendee to the 2025 IOA World Congress. (Buy 3 Get 1 Free!)

In order to receive the discount, please complete the regular registration process for your first 3 attendees and send their names to IOA Support (support@ioa-pag.org). Once registration has been confirmed, you will receive a coupon code to sign up your complimentary (4th) registration using Registration Category (Q).

Presenter Resources

Presenters will all have the opportunity to include their papers in the 2025 World Congress Proceedings, published after the conference concludes. A Speaker Agreement form will be sent via email, and can also be found below. Please reach out to IOA Support if you have any questions.


2025 Speaker Agreement Form

Cancellations

Registration cancellations for the 2025 IOA World Congress must be sent to support@ioa-pag.org and be received no later than Monday, August 11th for a full refund. There will be no refunds for registrations cancelled after August 11th. 

For questions, contact support@ioa-pag.org or (916) 441-0629.

Exhibit Hall Information

Join us in the Exhibit Hall!

The Exhibit Hall will be the central hub for numerous conference activities including coffee breaks, lunches, and the Exhibitors Welcome Reception. Reserve your booth today to assure your organization is at the center of all the action.

2025 Exhibitor Prospectus

Benefits of Exhibiting Include:

  • High-traffic exhibit hall to attract potential customers
  • Market your product and services to hundreds of attendees focused on municipal and industrial ozone applications
  • Generate publicity with your company listing on the Conference Program, website, and email correspondence with IOA members
  • Benefit from the additional exhibit hall traffic by hosting networking opportunities including coffee breaks and the Exhibitors Welcome Reception

    Note: Full Registration includes access to the Exhibit Hall, Technical Sessions, Conference Proceedings, Coffee Breaks, Lunches, and Receptions. The Workshop, Technical Tour, and Georgia Aquarium Banquet are not included with Full Registration. There is a max of 2 Exhibitors per booth.

    Cancellations: Cancellation of exhibit space must be made in writing to the IOA-PAG at support@ioa-pag.org. Cancellations received on or before July 31st will receive a 50% refund. There will be no refunds issued for cancellations received after July 31st.

    Conference Sponsorships

    Sponsorships Are Back for the 2025 IOA World Congress!

    We’re thrilled to announce the return of Conference Sponsorships exclusively for the 2025 IOA World Congress! Don’t miss this unique opportunity to boost your company's visibility with an international audience of ozone professionals.

    2025 Sponsorship Prospectus

    Public registration will be released on August 1st, keep an eye on your inbox for an email announcement!

    Year-Round Sponsors receive early access to select one complimentary sponsorship option as part of their benefits, with priority selection by sponsorship level (Platinum → Gold → Silver → Bronze). Remaining opportunities will then be available to the public on a first-come, first-served basis.

    All Sponsorships include:

    • Logo in the Conference Program, website, and select promotions

    • Sponsor badge ribbons

    • Event signage and slideshow recognition

    • And more!

    To ensure inclusion in the Conference Program, all registrations must be completed by Friday, August 8th. After registering, please send your company logo to support@ioa-pag.org.

    Questions? We’re happy to help—contact us at support@ioa-pag.org or (916) 441-0629.

    Hotel Information


    Book your stay under IOA's exclusive room block rate of $159/night! Note there is limited availability, so book early to ensure the discounted rate! Offer expires on August 1st, 2025.

    Reserve Your Room HERE

    Omni Atlanta Hotel at Centennial Park

    IOA Support

    Questions about the 27th IOA World Congress? Having a hard time deciding which registration option is right for you? We're here to help!

    Email: support@ioa-pag.org 
    (Monday-Friday, 8:00 am - 4:30 pm PT)

    Phone: +1-916-441-0629 
    (
    Monday-Thursday, 8:00 am - 4:30 pm PT)

    Thank You to our 2025 Sponsors!

    Copyright 2025; The International Ozone Association is a 501(c)3 non-profit organization. 

    IOA-PAG, 1521 I Street, Sacramento, CA 95814; support@ioa-pag.org 

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