Developers to start work on Hetch Hetchy water project

04/7/2010 | Engineering News-Record

San Francisco has given developers the green light to start work on a $4.6 billion project to improve the Hetch Hetchy water system. A five-mile tunnel under San Francisco Bay will deliver water to 2.4 million customers, replacing an 80-year-old system and providing more security during earthquakes.

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