How Much Does a New Septic System Cost in the Fox Valley?

If you're building a new home in the Fox Valley or replacing an aging septic system, here's a comprehensive breakdown of costs.

Average Costs by System Type

• Conventional gravity system: $4,000 - $8,000
• Pressure distribution system: $5,000 - $10,000
• Mound system: $8,000 - $15,000
• Aerobic treatment system: $10,000 - $20,000

Factors That Affect Cost

Soil Conditions

Soil type is the biggest factor. Sandy soil drains well and requires a simpler system. Clay soil or high water tables may require a mound system.

System Size

Wisconsin code requires minimum tank sizes based on bedrooms. A 3-bedroom home needs a 1,000-gallon tank.

Site Accessibility

Difficult access, rocky soil, trees, and steep slopes can increase costs.

Permitting and Engineering

Outagamie or Winnebago County permitting fees typically add $500 to $2,000.

Get a Free Estimate

Contact Septic Appleton for a free, no-obligation estimate from licensed contractors serving the Fox Valley.