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Local governments with SSTS programs submit information to the MPCA each year by February 1 on SSTS permitting and compliance trends for the previous calendar year. The information helps the agency with long-range planning efforts.

Summary of 2024 data

  • Data for this report came from 190 local governmental units (LGUs): 86 counties, 72 cities, 29 townships, and three other special purpose units of government with permitting authority.
  • Respondents reported a total of 648,641 SSTS across Minnesota, which treat an estimated 44.45 billion gallons of wastewater each year.
  • LGUs issued 10,551 construction permits for 4,942 new systems and 5,375 replacement systems in 2024.
  • Of the permits issued, 96% were for residential dwellings and 4% were for other establishments.
  • LGUs reported 12,810 compliance inspections of existing systems.
  • SSTS certification and licensing data is included in the annual report.

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