The Bay Division region is located in parts of the counties of San Mateo, Santa Clara and Alameda Counties. Primarily focused in the areas surrounding the Bay, there are 7 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.  

Bay Division Pipelines (BDPLs) Reliability Upgrade	BDPLs Nos. 3 & 4 Crossovers	BDPLs Nos. 3 & 4 Crossover/Isolation Valves Project at the Hayward Fault
Slipline BDPL No. 4 Study Project	Installation of SCADA System	Seismic Improvements of BDPLs Nos. 3 & 4 @ Hayward Fault
SFPUC / EBMUD Intertie

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This project consists of constructing a 21-mile Bay Division Pipeline No. 5 (BDPL No. 5) from Irvington Tunnel Portal in Fremont to Pulgas Tunnel Portal near Redwood City, including a tunnel under San Francisco Bay and adjacent marshlands. A map of this project has been included.     Read more 

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