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: