# Brown and Caldwell acquires membrane technology consulting firm SPI

Brown and Caldwell acquired Separation Processes, Inc. (SPI), a consulting engineering firm focused on membrane technology for water and wastewater treatment, to expand its membrane technology services.

- Type: Acquisition
- Announced: 2025-06-30
- Where: Walnut Creek, California, United States
- Status: completed
- Products: membrane technology services, water and wastewater treatment solutions
- Sectors: [Water Treatment Equipment](https://endata.com/sectors/water-treatment-equipment.md)

## Companies

- [Brown & Caldwell](https://endata.com/companies/26414.md) (acquirer)
- [Separation Processes, Inc.](https://endata.com/companies/85690.md) (target)

## Sources

- [prnewswire.com](https://www.prnewswire.com/news-releases/brown-and-caldwell-acquires-membrane-technology-consulting-firm-spi-to-advance-its-water-and-wastewater-treatment-solutions-302494855.html), 2025-06-30: "We believe that this acquisition unites the exceptional talents of two firms."
- [thewaternetwork.com](https://thewaternetwork.com/water-news-post-TFp/InGxhiBJl9UdEHz7vpLNRA), 2025-07-04: "The combined expertise of our people delivers even greater value and a holistic approach to water management for our clients."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.