Environmental Dynamics International, Inc. (EDI)

5601 PARIS ROAD, COLUMBIA, MO 65202-9399 United States

About Us


Support the water reclamation field with deliverables that reach beyond historical offerings.



To foster mutually supportive, long-term relationships as the industry’s most respected aeration company; helping our clients realize their facility’s full potential through our innovative technologies, services, and expertise.


Environmental Dynamics International (EDI) specializes in the research, development and application of advanced technology aeration and biological treatment solutions for municipal and industrial wastewater treatment. The company’s value solutions support new plant construction, existing facility upgrades and long term infrastructure demands. EDI supports a staff of qualified professionals and engineers to provide the highest level of value added service, technology development, process application and system design support. EDI is a full service organization and offers field services for equipment installation and maintenance with demonstrated success in over 6,000 installations in nearly 100 countries across all 7 continents.

Global Activities

The Corporate Office in Columbia, MO is the technology and manufacturing center for the organization. The facility supports the research and development, and engineering functions of the organization and features world-class test facilities for oxygen transfer, material performance, and product design. EDI serves the global market through direct sales and local independent partners. In addition to sales support from the corporate offices, EDI maintains international offices in Japan, China, India, Mexico, United Kingdom, Germany, and Singapore. The UK, China, and Singapore locations include warehousing and manufacturing to better support the needs of the surrounding region. For direct customer contact, EDI maintains an extensive network of representatives covering each major market to provide the highest level of support to our customers. The Diffuser Express® division offers a complete line of standard diffuser products for facility upgrades and replacement parts for all major brands. The goal of this division is to provide end users with direct access to the leading edge technologies being developed by EDI regardless of brand. Diffuser Express maintains a large inventory for quick shipment of most standard components. The EDI Aeration Works™ division provides factory qualified installation services for all brands of aeration equipment. Aeration Works experienced teams provide single source responsibility for installation, refurbishment, long-term preventative maintenance, and subcontracted supervisory services. 

Industry Excellence

EDI is recognized for excellence in exports and has received numerous awards including: State of Missouri “Small Business Exporter of the Year” Award in 2001, and US Dept. of Commerce President’s “E” Award for Excellence in 2002 followed by the “E-Star” Award in 2008. The E-Star Award has been granted to a select 300 companies since the inception of the program by President John F. Kennedy in 1961. EDI was also recognized on the Inc 5000 fastest growing privately held companies in the US for both 2008 & 2009, Environmental Business Journal Award winner for International Expansion in 2009, and SBA Top 100 Award recipient in 2011. EDI’s banking relationships support letters of credit and wire transfers. EDI works cooperatively with the US Department of Commerce, EX-IM Bank for export insurance, and several financing programs “to support our customers’ needs”.

Product Description

Symphony™ is a suite of services, hardware and technology that work together to optimize your wastewater treatment plant operations.


Symphony utilizes digital intelligence with masterful know-how and tightly targeted technology to deliver unmatched levels of performance in energy conservation and watershed management for every plant. Symphony will operate at peak process performance using the least amount of energy possible for its installed equipment. The best part? Symphony’s return on investment far outweighs its cost of implementation.