Septic pumping in Fillmore County, Minnesota costs $300-$550 (avg $400). A new septic system installation costs $5,600-$11,200. USDA soil data rates 0% of county soils as suitable for septic absorption fields. Approximately 2,038 homes in this county use septic systems.
Septic System Costs in Fillmore County
| Service | Low | Average | High |
|---|---|---|---|
| Pumping / Cleaning | $300 | $400 | $550 |
| Routine Inspection | $200 | $300 | $400 |
| Real Estate Inspection | $400 | $550 | $750 |
| Minor Repair | $700 | $1,000 | $4,900 |
| Conventional Installation | $5,600 | $8,000 | $11,200 |
| Aerobic System Installation | $10,500 | $15,000 | $21,000 |
| Drainfield Replacement | $5,600 | $8,000 | $11,200 |
| Perc Test | $850 | $1,200 | $1,700 |
Cost estimates based on regional market data for Fillmore County, Minnesota. Actual costs depend on system type, site conditions, and provider.
Soil & Septic Suitability in Fillmore County
Drainage Class
Well drained
Hydrologic Group
B
Unique Soil Types
83
Avg Bedrock Depth
2.5 ft
Dominant Soil Types
| Soil Series | Coverage | Drainage | Hydro Group |
|---|---|---|---|
| Dickinson | 640 | Well drained | A |
| Dakota | 463 | Well drained | B |
| Fayette | 445 | Well drained | C |
| Brodale | 397 | Excessively drained | B |
| Lindstrom | 362 | Well drained | B |
Septic Tank Absorption Field Suitability
USDA NRCS rates soil suitability for septic absorption fields across this county:
Overall rating: Very limited
Groundwater & Water Table in Fillmore County
Monitoring Wells
52
Avg Depth to Water
5.8 ft
Median Depth
3.4 ft
Shallowest Recorded
1.1 ft Shallow Risk
Moderate water table depth. Some sites may require modified systems or mound systems.
Source: USGS National Water Information System. Based on 371 measurements from monitoring wells.
Septic Regulations & Permits in Fillmore County
State Regulatory Body
Minnesota Pollution Control Agency
Inspection Required for Home Sale
Yes
Nitrogen Reduction Areas
No
Advanced Treatment Required
In designated areas
ISTS (Individual Sewage Treatment System) standards. County-level compliance inspections.
Contact the Fillmore County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for Fillmore County
How much does septic pumping cost in Fillmore County?
Septic pumping in Fillmore County, Minnesota typically costs between $300 and $550, with an average of $400. Costs vary by tank size (1,000-1,500 gallons is typical), ease of access, distance from the pumping company, and how full the tank is. Most homeowners should pump their tank every 3-5 years.
How much does a new septic system cost in Fillmore County?
A conventional septic system installation in Fillmore County typically costs $5,600-$11,200. An aerobic treatment unit (ATU) costs $10,500-$21,000. Given the predominantly well drained soils in this area, some sites may require alternative system types. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in Fillmore County?
Yes. Virtually all counties in Minnesota require a permit before installing, repairing, or replacing a septic system. The permit process typically involves a soil evaluation or percolation test, system design by a licensed professional, application to the county health department, and one or more inspections during installation. Contact the Fillmore County health department for current requirements and fees.
What soil types are in Fillmore County and how do they affect septic systems?
Fillmore County has predominantly Dickinson, Dakota, Fayette soils. The dominant drainage class is Well drained with hydrologic group B. The USDA rates 0% of surveyed soils as "Not Limited" for septic absorption fields, 12.1% as "Somewhat Limited", and 87.9% as "Very Limited".
Is a septic inspection required when selling a home in Fillmore County?
Yes. Minnesota requires a septic system inspection as part of the property transfer process. This typically involves a certified inspector evaluating the tank, drainfield, and all system components. The inspection cost in this area averages $550. If the system fails inspection, repairs or replacement may be required before the sale can proceed.
How often should I pump my septic tank in Fillmore County?
The EPA recommends pumping your septic tank every 3-5 years for a typical household. The exact frequency depends on tank size, household size, and water usage. A 1,000-gallon tank serving a family of 4 should generally be pumped every 3 years. Some counties in Minnesota have mandatory pumping schedules — check with your local health department.
Does the water table in Fillmore County affect septic systems?
Yes. The average groundwater depth in Fillmore County is approximately 5.8 feet, based on USGS monitoring data from 52 wells. While this is sufficient for many conventional systems, sites with lower elevations or seasonal water table fluctuations may require alternative system designs. A site-specific evaluation is always recommended.
Can I install a conventional septic system in Fillmore County?
It depends on your specific site. USDA soil data shows that 87.9% of soils in Fillmore County are rated "Very Limited" for septic absorption fields, while only 0% are "Not Limited." This means many properties will require alternative systems such as mound systems, pressure distribution systems, or aerobic treatment units. A percolation test ($850-$1700) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in Fillmore County?
A well-maintained septic system in Fillmore County typically lasts 25-30 years, though some components may need attention sooner. The concrete septic tank itself can last 40+ years, while the drainfield — the most critical and expensive component — usually lasts 15-25 years depending on soil conditions (Fillmore County has predominantly well drained soils). Regular pumping every 3-5 years and avoiding excess water usage are the two most effective ways to extend system life.
Data last updated: 2026-04-13