A federal appeals court is hearing arguments in a case that challenges the planned use of reclaimed water for snowmaking at an Arizona ski resort.

The 9th Circuit U.S. Court of Appeals is scheduled to hear the case Monday morning in San Francisco.

The Save the Peaks Coalition and a group of citizens want the U.S. Forest Service to do a more thorough environmental analysis on the health and safety risks of using treated wastewater for artificial snow.

A lower court has ruled that the Forest Service adequately considered the impacts of the snowmaking plan and that the record supported the agency's decision to allow it.

More than a dozen tribes consider the mountain sacred. American Indian tribes argued unsuccessfully in a separate case that the plan violated religious freedom.