Under the bill, a nine-member board made up of elected officials from Washoe County and from cities and water agencies in the county would create a comprehensive regional water plan. Truckee Meadows Water Authority and other water purveyors would continue to serve existing clients, but the new agency would control wholesale rates and any water importation plans.

Amodei told the Assembly Government Affairs Committee that opponents who said the new agency would subsidize developers were using scare tactics. The bill puts water planning in the hands of the same local officials who make planning and zoning that affect growth, he said.

"We're not telling you what to do, but we are telling you that you will do it together," Amodei said. "This is the right thing to do for the region. If you just say no, we put it back to where it was where we found it. That is not the most efficient way to treat this most important resource."

Opponents of the bill said regional cooperation already is occurring under existing agencies. Stories of duplicate facilities or competing water mains serving the same neighborhoods are false, Washoe County Commissioner Jim Galloway said. "The new planning will be less independent and more politicized," he said. "The board will import or reallocate water in various ways to subsidize water for growth, even for sprawl growth, at the expense of ratepayers."

Assemblyman David Bobzien, D-Reno, said regional water management could be more efficient but was wary of an agency that could raise wholesale water rates, which would be passed on to purveyors and consumers.

"The purveyors have to begin coordinating," Bobzien said. "But is this the right vehicle to do it?"