Septic Systems in Door County, WI

Regulations, costs, soil data & local providers

Pop. 30,066 ~24% on septic ~2,886 septic homes Well drained soil

Septic pumping in Door County, Wisconsin 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 2,886 homes in this county use septic systems.

Septic System Costs in Door County

ServiceLowAverageHigh
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 Door County, Wisconsin. Actual costs depend on system type, site conditions, and provider.

Soil & Septic Suitability in Door County

Drainage Class
Well drained
Hydrologic Group
D
Unique Soil Types
64
Avg Bedrock Depth
1.8 ft

Dominant Soil Types

Soil SeriesCoverageDrainageHydro Group
Kewaunee 405 Well drained D
Summerville 390 Well drained D
Rousseau 385 Well drained A
Onaway 338 Well drained C
Longrie 318 Well drained C

Septic Tank Absorption Field Suitability

USDA NRCS rates soil suitability for septic absorption fields across this county:

Not Limited (Good)0%
Somewhat Limited4.7%
Very Limited95.3%

Overall rating: Very limited

Source: USDA NRCS Soil Survey Geographic Database (SSURGO)

Septic Regulations & Permits in Door County

State Regulatory Body
Wisconsin Department of Health/Environment
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
No
Advanced Treatment Required
No

Contact county health department for specific requirements.

Contact the Door County health department for current permit requirements, fees, and approved system types.

Septic System FAQ for Door County

How much does septic pumping cost in Door County?
Septic pumping in Door County, Wisconsin 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 Door County?
A conventional septic system installation in Door 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 Door County?
Yes. Virtually all counties in Wisconsin 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 Door County health department for current requirements and fees.
What soil types are in Door County and how do they affect septic systems?
Door County has predominantly Kewaunee, Summerville, Rousseau soils. The dominant drainage class is Well drained with hydrologic group D. The USDA rates 0% of surveyed soils as "Not Limited" for septic absorption fields, 4.7% as "Somewhat Limited", and 95.3% as "Very Limited".
How often should I pump my septic tank in Door 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 Wisconsin have mandatory pumping schedules — check with your local health department.
Can I install a conventional septic system in Door County?
It depends on your specific site. USDA soil data shows that 95.3% of soils in Door 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 Door County?
A well-maintained septic system in Door 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 (Door 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.

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Quick Facts

Population30,066
Est. Septic Homes2,886
Avg Pumping Cost$400
Drainage ClassWell drained
Septic SuitabilityVery limited

Common Septic Services

Pumping: $300-$550
Inspection: $200-$400
Repair: $700-$4,900
Installation: $5,600-$11,200

Data last updated: 2026-04-13