Chisago County, Minnesota: septic system inspection at sale
Checked on November 9, 2026 against the official rule. Rule set by Chisago 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: 'requires an inspection of the septic system be conducted by this office prior to the point-of-sale / conveyance of a property'; escrow allowed for winter. Source: chisagocountymn.gov via wayback (see census notes for capture) |
| Triggered by | sale, conveyance Source: chisagocountymn.gov via wayback (see census notes for capture) |
| Deadline | Prior to point-of-sale / conveyance Source: chisagocountymn.gov via wayback (see census notes for capture) |
| How long a report is valid | New county-permitted system certified 5 yrs Source: chisagocountymn.gov via wayback (see census notes for capture) |
| 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: Chisago 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 Chisago County: the state’s count
MPCA counts 11,565 septic systems (SSTS) in Chisago County in 2025, the 18th highest number of Minnesota’s 87 counties. Licensed inspectors and the county did 332 compliance inspections of existing systems that year: 2.9% of the county’s systems, against 2.11% statewide (the 11th highest share). The county issued 220 construction permits in 2025 and 5,011 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. The county figures include the city and township septic programs inside it (MPCA footnote).
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 Chisago County
In 2015 about 27,563 of Chisago County’s 54,293 residents (51%) got their drinking water from a private well, by the USGS estimate. That is the 24th highest share of the 87 Minnesota counties in the USGS table, and the 11th 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 99% of Chisago County’s rated land “very limited” for a conventional septic drain field, 1% “somewhat limited” and 0% “not limited”, the 18th highest “very limited” share of 85 Minnesota counties with survey data. The most common limits: slow percolation (dense or clay soil) on 65%; a high water table (saturated soil near the surface) on 65%; fast seepage below the field (risk to groundwater) on 43%.
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 Chisago 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 Chisago County.
| Lab | Town | Distance | Certified on the list for |
|---|---|---|---|
| Instrumental Research, Inc. | Fridley, MN | 31 miles | coliform bacteria, nitrate, arsenic (subcontracted) |
| Water Laboratories, Inc. | Elk River, MN | 35 miles | coliform bacteria, nitrate, arsenic |
| Pace Analytical Services, LLC - Minneapolis | Minneapolis, MN | 38 miles | coliform bacteria, nitrate, arsenic |
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 Chisago 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 Chisago County.
| Rule | State | Distance | Covers | Checked |
|---|---|---|---|---|
| Isanti County | Minnesota | about 22 miles | Septic system | November 9, 2026 |
| Washington County | Minnesota | about 33 miles | Septic system | November 9, 2026 |
| Mille Lacs County | Minnesota | about 44 miles | Septic system | November 9, 2026 |
| Sherburne County | Minnesota | about 44 miles | Septic system | November 9, 2026 |
| Pine County | Minnesota | about 46 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.