Our office will be closed to the public beginning Monday, March 23rd until further notice. If you need assistance please call 406-995-2660 and leave a message. We will have staff at the office everyday to answer calls.

For after hour sewer and water related emergencies please call 406-215-2298

If you have a payment please use the drop box.

Thank you for your cooperation and patience during our health crisis.

Meetings & Announcements

Regular District Board Meeting

Tuesday, May 19, 2020 @ 8:00 AM

This will be an online “Go To Meeting”.  The public can join the meeting using the following links:


You can also dial in using your phone:
Access code:
One touch tel: +16467493129,,983438517#

Utility Bill Pay Information

District Office

Big Sky County Water & Sewer District No. 363
561 Little Coyote Road
PO Box 160670
Big Sky, MT  59716


After Hour Emergency Contacts

Sewer/Water Emergencies . .406-215-2298
Fire Department. . . . . . 406-995-2100
Sheriff’s Office. . . . . . . . .406-582-2100
Fire/Sheriff Emergencies. . . . 911


Frequently Requested Forms & Documents


The Big Sky County Water & Sewer District is a special purpose unit of government organized to regulate and operate the water and sewer systems at Big Sky, Montana. Created in 1993, the District is governed by a 7 member Board of Directors. Board meetings are held monthly at the District office generally on the 3rd Tuesday of each month. The public is welcome. Contact the District office for the next scheduled meeting. 

Gallatin Canyon Wastewater Upgrade Study Informational Meeting @ Bucks T4 - March 5, 2020

Wastewater Reclamation Upgrade Project appended recording covering Tech Memos 11-15 @ WSD363 Conference Room - January 15, 2019

Big Sky Wastewater Treatment Plant Upgrade Project General Overview

Wastewater Treatment Plant Public Informational Meeting @ WSD363 Conference Room - November 27,  2018 

Big Sky Resort Tax Meeting @ BSRAD Office - December 12, 2018

How the Wastewater System Works