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Subsurface Sewage Treatment System (SSTS) Program

Current Rules, Laws and Statutes, Regulations and Ordinances

Rule, Statute, and Law History

Professional Certification, Business Licensing and Enforcement

Technical Criteria

Septage Removal and Disposal

Product Registration for Treatment Products, Distribution Media and Sewage Tanks

Local Units of Government

Homeowner Information

Businesses with SSTS, Class V, Small Communities and Cluster Septic Systems: Regulatory and Other Considerations

Septic System Tank Installation Fee

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SSTS Rule, Statute and Law History


Previous SSTS Rules, SONAR, Public Notices, Comments and Responses

History of State Rules

History of Laws

This page is an archive for public notices, proposed rule changes, statements of need and reasonableness (SONARs), and other related information for SSTS regulations.

Minnesota’s SSTS regulations have a long history, dating back to 1969.  For current regulations, please visit Current Rules, Statutes and Legislation.

Previous SSTS Rules, SONAR, Public Notices, Comments and Responses

Minnesota Statute §115.57 Exit MPCA's Web site 

  • Individual Sewage Treatment System Or Water Well Loan Program

Minnesota Statute §115.58 Exit MPCA's Web site

  • Water quality cooperatives 

Minnesota Statute §115.59 Exit MPCA's Web site

  • Advanced Treatment Systems

Minnesota Statute §115.60 Exit MPCA's Web site

  • Pilot Program For Alternative Septic System Technology

Minnesota Statute §115.03 sub. 1(n) Exit to Web

  • MPCA training of ISTS personnel

2007 Regular Session - Chapter 57 Exit MPCA's Web site

  • Section 3
    • Appropriation to MPCA
  • Section 5
    • Appropriation to BWSR
  • Section 136
    • Added a definition of performance-based system
    • Removed old compliance dates
    • Added date for updating ordinances
    • Required rules to incorporate non-standard and performance systems
    • Allowed counties to adopt plans for addressing ISTS needs
    • Required MPCA to establish a database of best practices for ISTS
    • Increased money for the Ag BMP loan program.

2005 1st Special Session - Chapter 1 Exit MPCA's Web site

  • A maximum $25 tank fee for performance-based systems.
  • No professional may use the professional's position with government to solicit private business (Section 126).

Effective Dates 9/23/02 to 4/3/06

Effective Dates 6/29/01 to 9/21/02

Effective Dates 10/4/99 to 6/29/01

Effective Dates 1/23/96 to 10/4/99

Effective Dates 5/22/89 to 1/23/96

Effective Dates 8/28/78 to 5/22/89

1969 and 1971 Health Department Code

History of State Statutes

Statute § 115.03 sub. 1(n) Exit MPCA's Web site

  • MPCA training of ISTS personnel

Minnesota Statute §115.55 Exit to Web

  • Local ISTS ordinance requirements and alternative local standards
  • Inspections and complying system criteria
  • ISTS disclosure at property transfer
  • Warrantied systems

Minnesota Statute §115.56 Exit to Web

  • ISTS licensing requirements and enforcement

Minnesota Statute §115.58 Exit to Web

  • Water quality cooperatives 

Minnesota Statute § 115.551 Exit MPCA's Web site

  • Septic tank fee

History of Laws

  • 2009 Regular Session - Chapter 109 Exit to Web
    • Name change to Subsurface Sewage Treatment System (SSTS)
    • Language changes for clarification
    • Removal of outdated provisions
    • Removed provision that allowed offsite inspection by documentation
    • Clarified business license from an individual certification
    • Clarified that a subsurface system which does not need an SDS permit can be designed without being a AELSLAGID board professional if prescriptive standards and design guidance is provided.
    • Allows local governments to prohibit homeowner installation of SSTS.
    • Allows joint bonding with the plumbing bond.
    • Expanded the list of enforceable actions against SSTS licensed businesses or certified individuals

  • 2008 Regular Session - Chapter 357 Exit MPCA's Web site
    • SSTS businesses can perform work on systems of less than 10,000 gallons per day with MPCA prescriptive guidance

  • 2007 Regular Session - Chapter 131 (Section 73) Exit MPCA's Web site
    • Provided SSTS businesses a temporary exemption to AELSLAGID professional licensure.
      • Stakeholder group to develop recommendations
      • MPCA to provide follow-up report to legislature
  • 2007 Regular Session - Chapter 57 Exit MPCA's Web site
    • Section 3 - Appropriation to MPCA
    • Section 5 - Appropriation to BWSR
    • Section 136
      • Defined performance-based system
      • Removed old compliance dates
      • Added date for updating ordinances
      • Required rules to incorporate non-standard and performance systems
      • MPCA to develop ISTS best practices database
      • Increased funds for  Ag BMP ISTS loan program
  • 2004 Regular Session - Chapter 249 Exit MPCA's Web site
    • Clarified definition/interpretation of redoximorphic features
    • Procedures to resolve professional disagreements on seasonally saturated soils
  • 2003 Regular Session - Chapter 128 (Sections 164, 165 and Article 2, Sec 2) Exit MPCA's Web site
    • MPCA to prepare a ten-year plan to locate and upgrade non-compliant ISTS
    • ISTS Pilot Program fund some counties for system upgrades
    • ISTS license fees deposited in the state environmental fund
    • Environmental fund monies to address new technology review, technical assistance for local governments, and enforcement
    • Initial requirements for $25 septic tank fee
  • 1997 Regular Session – Chap. 235 Exit MPCA's Web site
    • ISTS advisory committee to have geographic representation and include elected public officials
    • Counties must adopt compliant ordinances by 1/1/99
    • Cities and township ordinances must be as strict as the county ordinance
    • Local governments must provide written list of any differences from state rule
    • MPCA to approve new ISTS technologies
    • Inspections required for new construction or replacement 
    • Certificate of compliance for existing ISTS valid for three years; five years for a new ISTS
    • A licensed inspector who inspects an existing system may design and install a new system for that property
    • Two foot vertical separation from bottom of drainfield to seasonally saturated soil allowed for some systems
    • Existing seepage pits can be grandfathered as compliant
    • Local ordinance must specify upgrade time for systems failing to protect groundwater
    • Modifications to point-of-sale disclosure requirements
    • Alternative local standards allowed in local ordinances
    • Warrantied system technologies allowed
  • 1996 Regular Session – Chap. 427 Exit MPCA's Web site
    • Temporarily waived certificate of compliance requirement for a building permit
    • Compliance inspection required for all new or replacement systems
    • No continuing education requirements for small volume pumpers
  • 1994 Regular Session – Chap. 617 Exit MPCA's Web site
    • Definitions
    • Voluntary adoption of compliant ISTS ordinance by 1996
    • MPCA requirements
    • Inspections and complying system criteria
    • ISTS disclosure at property transfer