Septic Installation Costs

How Much Does a Septic Tank Cost 

May 25, 20253 min read

💰 How Much Does It Cost to Install a Septic System?

If your home isn’t connected to a city sewer line, you’ll need a septic system. But how much does a septic installation cost? It depends on a few things—like where you live, the kind of system you need, and how big your home is.

Let’s break it down so you can plan ahead.


🏡 Average Cost for Septic Installation

The cost to install a septic system can range from $3,000 to over $20,000. Why the big difference? Every property is different, and so are the needs of each home.

Here’s what affects the price:


🔧 What Affects Septic System Cost?

1. Type of Septic System

  • Anaerobic systems (basic, no oxygen): $3,000 – $8,000

  • Aerobic systems (uses oxygen for cleaner treatment): $10,000 – $20,000

  • Mound or sand filter systems: $10,000 – $15,000
    These more advanced systems are used when soil is not good for regular systems.

2. Tank Size and Material

  • Most homes use a 1,000-gallon tank for 3 bedrooms: $1,200 – $1,500

  • Plastic tanks are cheaper but not as strong.

  • Concrete or fiberglass tanks cost more but last longer.

3. Labor and Excavation

  • Digging holes and preparing the land can cost $1,500 to $5,000.

  • This includes removing old tanks, leveling the land, or clearing trees.

4. Soil Testing and Permits

  • Before installing your septic tank, you’ll need soil tests and local permits.

  • These can cost $500 to $2,000, depending on where you live.


💵 Total Costs by System Type

Septic System Type Average Cost

Basic Conventional System $3,000 – $7,000
Mound or Sand Filter System $10,000 – $15,000
Aerobic System (with Drip Lines) $10,000 – $20,000
Full Septic System Replacement $10,000 – $30,000

💡 Tip: If your yard has rocky or swampy soil, it could raise your septic installation cost.


🧾 Extra Costs to Keep in Mind

Installing a septic system doesn’t just mean dropping in a tank. Here are some other things that add to the total cost:

  • Permits & inspections: $500 – $2,000

  • Site clearing & tree removal: $1,200 – $4,500

  • Landscaping after install: A few hundred to a few thousand dollars

  • Long-term maintenance: Pumping every 3–5 years, $250 – $600 per pump-out


🧼 Keep Your System Working Great

To avoid spending money on repairs, take care of your septic system:

  • Pump it regularly (every 3–5 years)

  • Don’t flush wipes, diapers, or grease

  • Fix leaks and don’t waste water

  • Get it inspected by a pro every 3 years

At Doug Campbell Backhoe, we help you save with smart care. We even offer a free pump-out with any major septic repair, so you get more for your money.


📞 Need a New Septic System?

Thinking about a septic installation? Want to know what it will cost for your property?

Doug Campbell Backhoe is here to help. Our team offers:

  • Expert septic system installation

  • Clear pricing and no surprises

  • Free pump-out with major repairs

Contact us today for a free quote or schedule an inspection. We’ll help you find the best septic solution for your home and budget.


With septic installation costs ranging from $3,000 to $20,000+, it’s smart to work with a team you can trust. Call Doug Campbell Backhoe now to get started!

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