Renville County, Minnesota: septic system inspection at sale
Checked on November 9, 2026 against the official rule. Rule set by Renville County.
General information, not legal advice. This is our summary of the official rule as we read it. The ordinance or code and the health department decide: confirm with them before you list, sign or close.
The rule
| Question | What the official text says |
|---|---|
| What is required | Seller completes the Property Transfer SSTS Disclosure Form with an MPCA Compliance Inspection Form showing compliance (or listed exemption or escrow agreement); filed with County Auditor/Treasurer along with the Certificate of Real Estate Value Source: renvillecountymn.gov |
| Triggered by | property transfer (sale); contract for deed completion exempt if pre-1999 Source: renvillecountymn.gov |
| Deadline | filed with Auditor/Treasurer with the Certificate of Real Estate Value at transfer Source: renvillecountymn.gov |
| Who arranges it | seller completes form; financial responsibility for upgrades set in signed buyer/seller agreement Source: renvillecountymn.gov |
| How long a report is valid | A county Certificate of Compliance for a system installed in the last 5 years is accepted Source: renvillecountymn.gov |
| Exemptions |
Source: renvillecountymn.gov |
| If the system fails | Failing: upgrade within 12 months of notice of noncompliance; imminent threat: within 10 months; sale may proceed with escrow agreement plus signed buyer/seller agreement; frozen ground Nov 1-Apr 30: inspection by June 1 with escrow Source: renvillecountymn.gov |
| Who may inspect | Minnesota Pollution Control Agency (MPCA) licensing of SSTS businesses. official list (webapp.pca.state.mn.us) Source: webapp.pca.state.mn.us |
| Official forms | renvillecountymn.gov Source: renvillecountymn.gov |
| In force since | form revised 2022-09-12 Source: renvillecountymn.gov |
This is our summary of the official rule as we read it. The ordinance or code and the health department decide: confirm with them before you list, sign or close. Rule set by: Renville County.
Checked on November 9, 2026: read on the official site.
Septic systems in Renville County: the state’s count
MPCA counts 2,394 septic systems (SSTS) in Renville County in 2025, the 63rd highest number of Minnesota’s 87 counties. Licensed inspectors and the county did 37 compliance inspections of existing systems that year: 1.5% of the county’s systems, against 2.11% statewide (the 45th highest share). The county issued 36 construction permits in 2025 and 1,520 from 2002 to 2025. MPCA’s table marks the county as requiring a compliance inspection at property transfer, which matches the rule on this page.
Source: MPCA, 2025 Subsurface Sewage Treatment Systems Annual Report (April 2026), Appendix A, as reported by each county; ranks among the 87 counties in the table (1 = highest). MPCA counts all compliance inspections of existing systems, whatever the trigger (property transfer, building permit and others).
Private wells in Renville County
In 2015 about 5,172 of Renville County’s 14,892 residents (35%) got their drinking water from a private well, by the USGS estimate. That is the 46th highest share of the 87 Minnesota counties in the USGS table, and the 56th highest number of private-well users.
As we read it, this rule covers the septic system, not the well.
Source: USGS county water use 2015 (Dieter et al., 2018). Ranks count the Minnesota counties in the USGS table (1 = highest).
Soils and septic systems here
USDA soil surveys rate 97% of Renville County’s rated land “very limited” for a conventional septic drain field, 3% “somewhat limited” and 0% “not limited”, the 39th highest “very limited” share of 85 Minnesota counties with survey data. The most common limits: slow percolation (dense or clay soil) on 97%; a high water table (saturated soil near the surface) on 96%; ponding on 20%.
Where soils are limited, inspections more often find drain fields that sit in seasonally wet soil, and replacement systems are often mounds or other engineered designs. A county-wide rating, not a test of one lot: a site evaluation decides. Source: USDA NRCS Soil Survey Geographic Database (SSURGO), via Soil Data Access, rating “ENG - Septic Tank Absorption Fields”, read November 15, 2026.
Certified labs nearest to Renville County for a well water test
Labs on the Minnesota certified drinking-water list that the list marks as taking samples from homeowners or outside clients, certified for coliform bacteria, nearest first. All of them are outside Renville County.
| Lab | Town | Distance | Certified on the list for |
|---|---|---|---|
| Minnesota Valley Testing Laboratories, Inc. | New Ulm, MN | 35 miles | coliform bacteria, nitrate, arsenic |
| Southwest Health and Human Services | Marshall, MN | 46 miles | coliform bacteria, nitrate |
| Engel Water Testing, Inc. | Minnetrista, MN | 60 miles | coliform bacteria, nitrate (subcontracted), arsenic (subcontracted) |
Source: MDH Accredited Labs in Minnesota Accepting Drinking Water Samples from Private Well Users (October 2026; read November 15, 2026). Straight-line distance from the centre of Renville County (the average of its Census ZIP-area points); “approx.” = lab placed at its ZIP centre. Call the lab first: lists do not say which household tests each lab takes or what it charges.
Nearest other sale-time rules
Buying or selling near a county line? These are the closest other local rules in our census to Renville County.
| Rule | State | Distance | Covers | Checked |
|---|---|---|---|---|
| Kandiyohi County | Minnesota | about 29 miles | Septic system | November 9, 2026 |
| Brown County | Minnesota | about 34 miles | Septic system | November 9, 2026 |
| Meeker County | Minnesota | about 36 miles | Septic system | November 9, 2026 |
| McLeod County | Minnesota | about 36 miles | Septic system | November 9, 2026 |
| Sibley County | Minnesota | about 37 miles | Septic system | November 9, 2026 |
Straight-line distance between county centres (the average of each county’s Census ZIP-area points). Townships, villages and health districts are placed at the centre of their county.