January 2026
Walsh Construction named lead contracting partner for $200 million San José wastewater modernization
SAN JOSÉ, CA – Walsh Construction has been named a lead contracting partner to Jacobs on the $200 million progressive design-build modernization of the San José–Santa Clara Regional Wastewater Facility (RWF).
Working in a supporting role to Jacobs, Walsh Construction and Structural Technologies will lead the construction efforts to modernize the facility's biosolids treatment infrastructure. The scope of work includes the replacement of aging mesophilic digesters and the construction of a new Fats, Oils & Grease (FOG) receiving station.
The modernization project is designed to deliver immediate environmental and economic benefits, including:
• Enhanced Energy Recovery: The upgrades will increase biogas output by up to 36%, fueling the facility’s cogeneration system and turning waste into a renewable energy source.
• Waste Diversion: The project is expected to reduce biosolids production by approximately 74 wet tons per day, significantly lowering the environmental and financial costs of offsite disposal.
• Greenhouse Gas Reduction: The new FOG station will convert high-strength waste from local businesses into clean energy, reducing the region’s reliance on natural gas and lowering overall emissions.