Waterborne

Waterborne is a 2005 independent film directed by Ben Rekhi and starring Christopher Masterson, Ajay Naidu, Jake Muxworthy, Jon Gries, Christopher Berry, Shabana Azmi and Mageina Tovah. The plot concerns the fates of three different groups of people after a terrorist attack pollutes the water supply of Los Angeles, resulting in a severe water shortage. The score was written and performed by Dredg.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.