The City of San Antonio is one of the fastest‑growing metropolitan areas in the United States, creating new demands on essential water infrastructure. To strengthen long‑term water resilience, the City undertook the Vista Ridge Regional Supply Project (VRRSP) – a transformative initiative that diversifies water sources, enhances regional water security, and supports future population growth. When completed, VRRSP became the largest public‑private partnership (P3) water project in North America, delivering up to 16.3 billion gallons of water annually for at least the next 30 years.
What challenges did STV address?
San Antonio needed a sustainable and reliable way to expand its water supply without over‑reliance on existing sources. The region faced both rapid growth and an increasingly unpredictable climate, making diversification critical. The VRRSP required a delivery solution that balanced technical complexity, multi‑jurisdictional coordination and long‑term operational resilience – while minimizing risks inherent in a P3 megaproject.
What solutions did STV deliver?
STV provided extensive program management and engineering services across the full project lifecycle. This included developing program design standards, specifications and technical details; completing route studies; preparing easement documentation and designing major pipeline components. STV also oversaw hydraulic and surge protection integration, fiber design, constructability reviews, permitting, surveying and subsurface utility engineering investigations. Together, these services delivered a system that was technically sound, constructible and resilient for decades of continuous operation.
How does this project benefit the region?
By delivering a new, drought‑resistant water source, the VRRSP enhances water security for more than one million residents. The project ensures that San Antonio can continue to grow responsibly—supporting new housing, industry, and economic development—while protecting the Edwards Aquifer and strengthening environmental sustainability. VRRSP sets a national precedent for long‑term regional water planning through innovative financing, engineering excellence, and community‑focused outcomes.
Key Stats and Accolades
- Largest P3 water project in North America
- Supplies up to 16.3 billion gallons annually
- Provides 20% more water supply for the region
- Designed to serve the community for 30+ years
- Recipient of the American Council of Engineering Companies – Texas Engineering Excellence Award
- Comprehensive services including hydraulic design, surge protection, fiber design, SUE, permitting, surveying and constructability review
