Three years after an obscure Arizona agency was charged with finding new water supplies for the state, it has received six proposals from groups that hope to tap more than $375 million in state money to develop new water sources. The proposals include three to create desalination plants using ocean water — likely from the Sea of Cortez in Mexico. But exactly what is being proposed — and how much it will cost — remains confidential as the Water Infrastructure Finance Authority says state law keeps it so until its board members award one or more contracts to move ahead with more detailed plans.

Other desalination news:

• Burbank Leader (Calif.): Burbank signs on to first U.S. subsea desalination project
• Monterey Herald (Calif.): Opinion: Argument for desal doesn’t hold water
• Havasu News (Ariz.): Arizona’s secret $375M water plan: 6 proposals for desalination and new supplies finally revealed soon