Earlier this week, California’s Westlands Water District, the largest agricultural water district in the U.S., voted not to participate in an ambitious, long-planned project to re-engineer the way water is shuttled across the Golden State. The Westlands decision is a setback for the project, a plan to route tunnels beneath the Sacramento-San Joaquin Delta, but California state officials aren’t giving up on it just yet. Still, the ‘no’ vote from Westlands — the district says the plan “is not financially viable” — puts the future of the $17 billion project in doubt.