Directed by Academy Award winning Jessica Yu (Food, Inc.), this documentary explores the looming threat to the water supply of heavily populated states like California and Nevada due to factors like wasteful usage, pollution and a general overall inability to comprehend that in an arid climate water is an extremely precious resource.

Last Call at the Oasis runs tonight and Saturday at 7 p.m. at the RPL Theatre and Friday and Sunday at 9 p.m. Here’s the trailer: