Blue Earth County, Minnesota: septic system inspection at sale
Checked on November 9, 2026 against the official rule. Rule set by Blue Earth 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 | County page: SSTS Ordinance requires at transfer either compliance inspection/current certificate to buyer or written agreement to replace system within 10 months; copy to county. Source: blueearthcountymn.gov via wayback (see census notes for capture) |
| Triggered by | sale, transfer Source: blueearthcountymn.gov via wayback (see census notes for capture) |
| Deadline | At property ownership transfer: inspection or current certificate presented to buyer, or written agreement to replace system within 10 months; winter sales: Transfer Agreement, inspection no later than June 1 Source: blueearthcountymn.gov via wayback (see census notes for capture) |
| How long a report is valid | State default: 3 years (existing system), 5 years (new/replacement); county text may differ Source: revisor.mn.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 |
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: Blue Earth County.
Checked on November 9, 2026: read in a web-archive copy of the official page (the live site was blocked from our connection).
Septic systems in Blue Earth County: the state’s count
MPCA counts 5,620 septic systems (SSTS) in Blue Earth County in 2025, the 36th highest number of Minnesota’s 87 counties. Licensed inspectors and the county did 157 compliance inspections of existing systems that year: 2.8% of the county’s systems, against 2.11% statewide (the 12th highest share). The county issued 101 construction permits in 2025 and 3,266 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 Blue Earth County
In 2015 about 14,179 of Blue Earth County’s 65,787 residents (22%) got their drinking water from a private well, by the USGS estimate. That is the 67th highest share of the 87 Minnesota counties in the USGS table, and the 32nd 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 Blue Earth County’s rated land “very limited” for a conventional septic drain field, 3% “somewhat limited” and 0% “not limited”, the 33rd highest “very limited” share of 85 Minnesota counties with survey data. The most common limits: a high water table (saturated soil near the surface) on 93%; slow percolation (dense or clay soil) on 91%; ponding on 15%.
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 Blue Earth 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 Blue Earth County.
| Lab | Town | Distance | Certified on the list for |
|---|---|---|---|
| UC Laboratory | Janesville, MN | 15 miles | coliform bacteria, nitrate, arsenic (subcontracted) |
| Minnesota Valley Testing Laboratories, Inc. | New Ulm, MN | 31 miles | coliform bacteria, nitrate, arsenic |
| RMB Environmental Laboratories, Inc. - Burnsville | Burnsville, MN | 62 miles | coliform bacteria, nitrate, 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 Blue Earth 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 Blue Earth County.
| Rule | State | Distance | Covers | Checked |
|---|---|---|---|---|
| Waseca County | Minnesota | about 19 miles | Septic system | November 9, 2026 |
| Nicollet County | Minnesota | about 23 miles | Septic system | November 9, 2026 |
| Le Sueur County | Minnesota | about 26 miles | Septic system | November 9, 2026 |
| Faribault County | Minnesota | about 26 miles | Septic system | November 9, 2026 |
| Watonwan County | Minnesota | about 31 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.