Last week, the California Department of Water Resources officially announced it would seek to build a single tunnel, but now the Metropolitan Water Agency of Southern California could change that. The Sacramento Bee reported that Metropolitan, the largest public water agency in the state, was contemplating a plan to fund a significant portion of California WaterFix. It was just a week ago that the state decided to scale back the project – a two-tunnel conveyance with a price tag of $17 billion.