Only storm water should be entering storm drains, as this water returns directly to local rivers and water ways. It is not treated like sewage is before it is discharged into water bodies. If you observe individuals or entities discharging wastewater, chemicals, or anything else that is not storm water into storm drains, they should be reported to the local Municipal Separate Storm Sewer System (MS4) Program.
Great Falls Public Works/Environmental Division - Within the City of Great Falls, the Public Works - Environmental Division manages and implements the MS4 Program.
County Planning & GIS/MS4 - In areas immediately adjacent to Great Falls but not within the city limits, the County Planning & GIS Department manages and implements the MS4 Program.