Septic System Compliance & Permitting

For properties without a connection to municipal sewage treatment systems, Minnesota Administrative Rule Chapters 7080 through 7083 and the Mille Lacs County Subsurface Sewage Treatment System Ordinance (PDF) require waste water and sewage to be treated by a Subsurface Sewage Treatment System (SSTS).

SSTS must be designed and installed by licensed SSTS installers and designers certified by the Minnesota Pollution Control Agency (MPCA).

Permit Requirements

Permits, issued by Mille Lacs County Environmental Resources, are required for the following:

  • Construction
  • Installation
  • Modification
  • Operation
  • Replacement

Inspections of permitted systems are completed by staff during construction.

For permit information, or to schedule an inspection, please email our SSTS staff or call 320-983-8458.

Greenbush and Princeton Township administer their own SSTS programs. Residents in Greenbush and Princeton township seeking SSTS information need to contact their respective local authorities.  

Compliance Inspections

Mille Lacs County requires that SSTS be inspected when one of the following occurs:

  • For all new construction in the shoreland or wild and scenic river district
  • Prior to issuance of a permit or variance to add a bedroom to a structure
  • Prior to the sale or transfer of property

Inspector Search

Compliance inspections must be completed by licensed SSTS inspectors certified by the MPCA. A The Minnesota Pollution Control Agency maintains of a list of all certified individuals. A list of SSTS service providers (designers, installers, and inspectors) is available.

For compliance inspection or existing system information please email our SSTS staff or call 320-983-8458.

More Information