San Francisco's supply of water from Hetchy Hetch is probably more guaranteed than the rest of the Bay Area, the SF Water company has large resources in San Mat

San Francisco's supply of water from Hetchy Hetch is probably more guaranteed than the rest of the Bay Area, the SF Water company has large resources in San Mateo, Santa Clara and Almeda counties earmarked for SF that might appear to uninitiated as large spaces ripe for development - it's not and probably never will be.