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SF 5180

Acceptance of best evidence requirement to determine subsurface sewage treatment system compliance

2025-2026 Regular Session Introduced by Karin Housley and 2 co-sponsors

The bill requires using the best available, recent evidence (up to 2 years old) to determine SSTS compliance, prioritizing MDH-lab data and accepting owner-provided results with a

Authors added Johnson Stewart; Seeberger
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Bill Summary · SF 5180

Summary of SF 5180 (2025-2026) – Minnesota

Purpose

SF 5180 seeks to modify how authorities determine whether a subsurface sewage treatment system (SSTS) complies with applicable requirements. Specifically, it requires the use of “best evidence” when assessing groundwater contamination related to SSTS compliance, updating the evidentiary standards that inspectors and agencies may rely upon.

Key Provisions

  • New Subdivision: Bestevidenceofcompliance (Subd. 14)
    When determining whether an SSTS meets applicable requirements, the following entities must use the best available evidence for the presence of sewage contaminants in groundwater. The priority order for evidence is:

    1. A measurement of groundwater contaminants by a laboratory accredited by the Minnesota Department of Health (MDH).
    2. Continuous, uncompressed probe-measured depth below the drain field base media to the groundwater table.
    3. The National Groundwater Monitoring Network, a watershed district, or historical depth-to-groundwater information from either the network or a watershed district.
    4. Empirical field measurements of depth to mottled soil.
    5. Depth to mottled soil with redoximorphic features based on Munsell soil color charts.

  • Ages of Evidence
    The subdivision emphasizes evidence that is less than two years old (i.e., current or recent data) from the listed methods/sources.

  • Acceptance of Evidence from Property Owners
    If the property owner or lessee offers to submit results from the listed methods/sources, the agency, local unit of government, or inspector must accept results that are less than two years old from those methods/sources.

  • Notice Requirement
    Agencies must notify a person of their rights under this subdivision at least 90 days before issuing a notice of noncompliance.

Who Is Affected

  • Primary Stakeholders

    • Property owners or tenants with subsurface sewage treatment systems.
    • Local units of government and inspectors responsible for enforcing SSTS compliance.
    • Minnesota Department of Health (as the approving authority for laboratory accreditation and as a standards-setter for evidence quality).

  • Broader Impact

    • Agencies and inspectors may rely on a broader set of contemporary evidence (including owner-provided data) to assess SSTS compliance, potentially affecting timelines for compliance determinations and enforcement actions.

Procedural and Timeline Aspects

  • Effective Process Change
    The bill introduces a defined hierarchy of evidence and mandates the acceptance of certain evidence when submitted within the two-year recency window.

  • Notice Before Noncompliance
    Affected individuals must receive at least 90 days’ notice prior to a noncompliance determination, providing a transition period and an opportunity to present alternative or supplementary evidence.

  • Jurisdiction and Referral
    The bill is introduced in the Minnesota Senate (SF 5180) and referred to the Environment, Climate, and Legacy committee. It is sponsored by Senator with co-sponsor Senator Karin Housley.

Practical Implications

  • Increased Flexibility for Evidence
    The emphasis on “best evidence” and acceptance of owner-provided, recent data could streamline or adjust how quickly agencies determine SSTS compliance and issue enforcement actions.

  • Quality and Credibility of Evidence
    The priority listing (MDH-accredited lab results first, followed by objective field measurements and established groundwater data networks) aims to ensure high-quality, defensible data is used.

  • Transition and Rights Notification
    The 90-day notice requirement affords individuals time to gather additional data or address potential noncompliance concerns before formal action.

Notes

  • The text references Minnesota Statutes 2024, section 115.55, adding Subdivision 14 (Bestevidenceofcompliance).
  • The proposal is at the introduction stage (as of the 2025-2026 session) and subject to committee deliberation, potential amendments, and floor action.

Compiled from official sources — confirm details with the bill’s official record.

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