Pretreatment

Responsibilities

The Pretreatment Program responsibilities are to:

  • Protect city personnel and the public
  • Meet the regulatory requirements placed on the program
  • Protect the plant processes, equipment, and collection system from impact by industrial discharge
  • Minimize any deleterious effect of industrial wastewater on the environment while creating a minimum regulatory burden on the industrial user

Elements

Specific elements of the Pretreatment Program are:

  • Regulating discharges of non-domestic wastewater, including significant and minor industrial users
  • Sampling and analyzing city areas to build and maintain a comprehensive geographic view of sources and plant loading
  • Overseeing the Hauled Waste Program
  • Testing and annual reporting for 503 sludge regulations
  • Submitting annual EPA pretreatment report and inspections

Individual Wastewater Discharge Permit

To apply for an Individual Wastewater Discharge Permit, simply download the application form, fill it out, and return it at least 90 days before you begin discharging to the wastewater treatment plant. 

  • Send your completed application to: City of Missoula Wastewater Treatment Facility, 435 Ryman St - Missoula, MT 59802.
  • After we receive your application, our team reviews it and will contact you if we need additional details or clarifications. Once the application is complete, we prepare a Statement of Basis that explains the permit rationale and cites the relevant municipal and federal codes. We then establish sampling, monitoring, and reporting requirements and draft your permit.

While processing times vary, City code allows up to 90 days for a permit decision (MMC 13.07.660). If you have questions about the process or need help, reach out—we’re here to guide you.

Download the Individual Wastewater Discharge Permit Application

Contact

For more information about the Pretreatment Program, call 406-552-6606, or view the following: