Prosecuting Clean Water Act violations Against Big Sky Resort.

Cottonwood v. Big Sky Resort

Cottonwood has a jury trial against Big Sky Resort for Clean Water Act violations in November, 2025. The lawsuit alleges Big Sky over-irrigated its golf course with treated sewage.

When Cottonwood prevails, it will seek to limit the volume of treated sewage that Big Sky can spray on its golf course to protect the Gallatin River. Big Sky Resort previously sprayed 116 million gallons of treated sewage on its golf course. In contrast, Cottonwood settled a Clean Water Act lawsuit against the nearby Spanish Peaks Resort in 2022 that limits the volume of treated sewage that can be sprayed on its golf course to 33.6 million gallons/year.

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