Paul Driscoll

Rachel Cramer / Yellowstone Public Radio

Several years ago, Havre, Montana had a problem. Its treated wastewater had too many nutrients. Fixing it was expected to cost millions of dollars. But, wastewater workers discovered a cheap, upcycled solution through the magic of chemistry and beer.

The Rosebud Mine just outside of Colstrip, Montana.
WildEarth Guardians / Flickr (CC BY-NC-ND 2.0)

State regulators are seeking public comment on a proposed wastewater treatment plan as part of an expansion of the Rosebud coal mine in southeastern Montana.