About 30 percent of Rockland's water comes from the field.
High stress countries consume more than 40 percent of their fresh water supplies a year.
Farm interests, which now get 90 percent of the project's water, are less enthusiastic.
Just 17 percent of California's water is used by urban residents.
Walnut Creek itself provides about 5 percent of the town's water.
In normal operation, 90 percent of the city's water comes through the 81-year-old reservoir.
Only about 3 percent of the earth's water is fresh.
According to the government, 40 percent of the country's water needs went unmet.
Since 1999, the vast reservoir has lost more than 60 percent of its water.
Westchester County, which gets 85 percent of its water from the city's system, followed suit.