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The Sunol Valley region is located within the county of Alameda. There are 9 major water system improvement projects in this area. These projects will rebuild, repair and retrofit major transmission pipelines and other facilities that support water delivery of the Hetch Hetchy System.

The table below provides information about Water System Improvement Program projects for this area of our water system.  

Alameda Creek Fishery Enhancement	Alameda Siphon No. 4	Calaveras Dam Replacement
New Irvington Tunnel	Pipeline Repair & Readiness Improvements	San Antonio Backup Pipeline
San Antonio Pump Station Upgrade	Standby Power Facilities	Sunol Valley Water Treatment Plant Improvement Project

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