How Much To Replace A Septic Tank: Costs Breakdown & Savings Tips

Jan 266 min read

Updated: 3 days ago

If you're dealing with a failing septic system, the prospect of a complete replacement can be overwhelming, especially considering potential costs.

However, understanding the factors that influence septic system installation costs is essential for making an informed decision and managing your budget effectively.

Understanding these factors will help you understand the investment required for your situation and make the best decision for your property.

Let's examine the costs of new septic system installations to help you navigate this vital home improvement project.

Why Would You Need To Replace A Septic Tank?

Septic tanks don’t last forever. Many systems can last 20 to 40 years. However, continuous maintenance and wear and tear can change their life expectancy.

If you notice an unpleasant smell, show drains, and water backup signs, your system needs an inspection.

Other red flags that cause a septic system to fail include pooling water near the tank, lush greenery, yard smell, and health issues.

Sometimes, it’s not just about damage. If your household has grown or your water usage has increased, your current tank size and location might no longer be appropriate.

Older systems might not meet today’s standards, so replacing your septic tank according to local rules is essential to prevent more significant problems later.

How Much Does It Cost To Replace A Septic Tank: Cost Breakdown

Replacing your septic tank with a new one is a significant home improvement project. Understanding the overall cost is key to practically implementing the system.

The overall price may vary depending on tank size, location, and type of septic system. However, most homeowners can expect to pay an average of $3,000 to $10,000.

Septic Tank Material Cost

Your selection of a septic tank also impacts its cost.

Concrete tanks are more durable, long-lasting, and widely used. The installation price is $700 to $2,000. For instance, a 1000-gallon concrete septic tank costs $2,500 or more.

Plastic/Polyethylene Tanks: These septic tanks are lightweight and more corrosion-resistant. If you’re considering it, a septic costs between $500 to $1,500. These tanks are easy to install but not as durable as concrete tanks.
Fiberglass Tanks: Fiberglass septic tanks are more durable and resistant to corrosion and natural wear and tear. They cost between $1,200 and $2,000 or more.

Labor And Installation Cost

The labor and installation costs are also included. Be sure to hire a septic system installer for the best application. This cost depends on the location and complexity of the installation that includes:

Excavation and removal of the old tanks.
New tank installation and connection with the leach field.
Cleaning nearby and inside the tank of restoration.

The cost may increase if your property has rough terrains like rocky soils or other atypical conditions.

Tank Size

The size of the septic tank depends on household needs, which increases costs. A 5,000-gallon tank may cost between $3,000 and $4,000 or more for larger families.

A 1,000-gallon concrete septic tank costs between $900–$1,500.

Drainfield Replacement Cost

When you hire a professional septic system inspector, they will assess the tank and the condition of the drain field.

If the drain field is damaged or needs updating, replacement costs can vary significantly:

Typical cost range: $5,000 to $20,000
Average cost: $7,000 to $12,000

Factors affecting the cost include:

Size of the drain field
Soil conditions and percolation rate
Local regulations and permit requirements
Accessibility of the site
Type of system installed (conventional vs. alternative)

Before proceeding with a drain field replacement, it's advisable to:

Get a thorough inspection and analysis of your entire septic system
Obtain multiple quotes from licensed septic professionals
Consider your budget and financing options
Explore alternative systems that might be more suitable for your property

Remember, a well-maintained drain field can last 20-40 years, making it a significant long-term investment in your property's infrastructure.

Additional Costs To Consider For New Septic Tank Installation

Here are some additional and average cost breakdowns that everyone must consider:

Component	Additional Cost
1500-gallon Concrete Septic Tank Cost	$3,500 - $7,000
Septic Tank Price for Mobile Home	$2,500 - $5,000
Anaerobic Septic System Cost	$2,000 - $5,000
Excavation and Removal	$1,000 - $3,000
Site Restoration	$500 - $2,000
Soil Testing	$300 - $600
Landscaping	$500 - $2,000
Unexpected Repairs (Septic tank baffle replacement)	$500 - $2,000

What Are The Factors Affecting The Cost Of A Septic Tank Replacement?

What are the Factors Affecting the Septic Tank Replacement Cost

The cost isn't confined to septic tank replacement only. The other nearby factors also impact its overall cost. These factors include:

System Complexity: Advanced systems, such as aerobic septic systems or those with advanced treatment features, cost more due to their sophisticated design and installation requirements.
Local Labor Rates: Labor costs vary by region, with urban areas often charging more than rural ones due to higher demand and operating costs.
Accessibility Of The Site: If your property is hard to access or requires special equipment, excavation and installation costs will increase.
Seasonal Factors: Installing a septic tank during rainy or winter weather can be more expensive due to difficult working conditions.
Tank Depth and Placement: Due to additional labor and materials, deeper tanks or those requiring specific placement (e.g., far from the house) can raise costs.
Type Of Drain Field: The leach field design (conventional vs. alternative) can impact costs, especially if advanced systems like mound systems are needed.
Local Regulations And Codes: Stricter local regulations may require additional features or inspections, increasing the overall cost.
Waste Volume and Usage: Larger households or properties with higher water usage may need bigger tanks or more complex systems, which can increase costs.

How To Save Money On A Septic System Installation

How To Save Money On Septic System Installation

Although installing a new septic tank may seem costly, it is an essential investment in human health and environmental safety.

Here are some tips that you must consider for saving money on it:

Get quotes from several septic system repair contractors to find the best one that relies on your budget.
Consider selecting a green septic tank or an energy-efficient system to maximize long-term savings.
Consider scheduling septic system installations and maintenance during the off-season to maximize discounts.
Do a regular septic system maintenance inspection to save money on replacing the septic baffle replacement or overall.
Use a septic tank cover to prevent septic flies that cause human health issues.

Conclusion

If your septic tank is causing problems, replacing it with a new one is essential. If you notice any signs of toilet gurgling, odors, or clogging, replace it quickly.

Such signs should not be ignored or delayed, as they can cost more than expected. To save money, have your septic tank pumped regularly or weekly by experts.

Barnes Sewer & Septic specializes in the following services:

Septic tank pumping
Effluent pump replacement
Riser Installations
Septic tank baffle replacement
Effluent filter cleaning
Float replacement

FAQs

How long does a septic tank last?

A septic tank can last anywhere from 20 to 40 years, depending on several key factors:

Regular Maintenance: Proper maintenance, such as regular pumping and inspections, significantly extends the tank's lifespan.
Usage Patterns: The frequency and type of items flushed down the drain can impact the tank's longevity. Avoiding non-biodegradable items and excessive water usage helps maintain the system's health.
Materials and Construction: The tank's materials and construction quality also influence its durability. Modern tanks of durable materials like fiberglass or concrete tend to last longer than older metal tanks.
Environmental Conditions: Soil conditions, groundwater levels, and local regulations can also affect the life of a septic tank.

Maintaining your septic system properly and being mindful of what you flush can help ensure it reaches the upper end of its potential lifespan.

Can I have my septic tank repaired instead of replaced?

Yes, professionals can repair your septic tank if the issue is minor.

However, for significant problems, a full replacement is often necessary.

Here are some guidelines to consider:

Minor Issues: Repairs can be a cost-effective solution if the problem is minor, such as a cracked lid or a clogged inlet/outlet pipe. Professionals can assess and fix these issues without replacing the entire tank.
Major Issues: If the tank is severely damaged, corroded, or structurally compromised, or if the drain field has significant problems, a complete replacement is usually the best option. This ensures the system functions properly and safely.
Cost Considerations: While repairs might seem cheaper upfront, replacing the tank might be more cost-effective in the long run if it is old or has recurring issues. A professional assessment can help determine whether repair or replacement is better for your situation.

How often should a septic tank be pumped?

You should have your septic tank pumped every 3 to 5 years.

How much is a new septic system for a 2-bedroom house?

A new septic system for a two-bedroom house is typically between $3,000 and $7,000, depending on the tank size and installation.