Separation Processes, Inc. (SPI) is an internationally recognized consulting engineering firm focused on the application of membrane technology and other advanced processes for water and wastewater treatment.

SPI draws on its vast array of experiences and expertise in microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and other advanced processes to deliver successful projects to public and private agencies. SPI's charter is to put an Emphasis on Excellence in every project. As a result, SPI has built a reputation that has become synonymous with providing quality service in the following areas:

• Training and Operations & Maintenance Manuals
• Procurement
• Process Monitoring and Optimization
• Planning
• Pilot Studies
• Design Services
• Construction Administration and Support