Syphon Reservoir Expansion and Improvement Project

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COWI, in joint venture with GFT (formerly Gannett Fleming), has been appointed by Irvine Ranch Water District (IRWD) as construction manager for the Syphon Reservoir Improvement Project, the largest project ever undertaken by IRWD. The contract includes comprehensive construction management services starting with pre-construction constructability reviews to optimize the design and support contractor bidding, through to construction contract administration, resident engineering, quality assurance, and formal risk management throughout the project.

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The project’s primary objective is to expand the Syphon Reservoir’s storage capacity by ten times, enabling storage of up to 5,000 acre-feet of recycled water. This expansion will enhance regional water supply reliability, support climate resilience, and reduce costs to ratepayers by minimizing the volume of imported water needed by IRWD. The project facilitates increased storage and reuse of recycled, non-potable water primarily for irrigation and other non-drinking applications, thereby reducing demand on potable water resources.

Miljøvern og samfunnsengasjement

Environmental protection and community engagement are key components of the project. COWI will coordinate closely with IRWD’s environmental monitoring and public outreach teams to safeguard local ecosystems and ensure transparent communication with the public during construction. The project also aligns with California’s stringent regulatory and environmental requirements, leveraging COWI’s extensive experience with dam and reservoir projects across the state.

Banebrytende vannforsyningsløsning

This milestone project builds upon IRWD’s pioneering legacy in recycled water infrastructure, including their groundbreaking 'purple pipe' system. The Syphon Reservoir expansion secures sustainable water supplies amid challenges from climate change and population growth, providing a blueprint for other agencies facing similar water resource pressures. COWI’s role in this project reflects its increasing influence in shaping resilient water infrastructure solutions across Southern California.