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How Much Does A Septic System Repair Cost?

Most homeowners spend between $821 to $1,434 nationally.
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If your septic tank is working well, you might go years without giving it a second thought. But, when problems arise, it’s always best to bring in professionals who are familiar with the required repairs. If you’re unsure what to do, who to call or how to budget for the cost, use this guide to get a better estimate of common expenses that will be included in your septic tank repair.

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National Repair a Septic Tank Costs

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Median Cost


Minimum Cost


Maximum Cost
Average Range:


National Average Cost $1,397
Minimum Cost $65
Maximum Cost $4,600
Average Range $821 to $1,434
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How do we get this data? This info is based on 709 cost profiles, as reported by ImproveNet members.

Table of Contents

  1. Septic Tank Repair Cost
  2. Septic Tank Cost By Size
  3. Septic Cleaning Pump Cost
  4. Septic Tank Replacement Cost
  5. Identifying Problems With Your Septic Tank
  6. Importance Of Regular Inspections & Pumping
  7. Common Repairs & Fixes
  8. Hiring The Right Contractor
  9. Find A Local Plumber

Septic Tank Repair Cost

If you run into a serious problem with your septic tank, one of the first things that come to mind might be the cost. Unfortunately, most septic tank issues will be a minimum of $1,000 to resolve, although there are some exceptions to the rule. For any type of professional septic tank repair, the cost to repair a septic tank is between $891 and $1,434. The average septic tank repair cost is $1,397, but will vary from state to state.

Common Repairs


Drain/Leach Field

$2,000 - $10,000


$300 - $500

Tank Lid

$30 - $70

Drain/Leach Field

The drain or leach field is a section of your septic tank that carries the waste water back to the soil. The most common sign of drain field problem is your lawn becoming swampy and holding a sewage stench. The average cost to replace a drain field can be anywhere from $2,000 to $10,000, depending on your tank size and area your tank is placed.


The baffle is the part of your septic tank that prevents scum and grime buildup in the inlet or outlet pipes connected to your system. Sometimes, replacing the baffle can fix the problem and won’t require the replacement of the tank itself. The average cost to replace a baffle is between $300 and $500.

Tank Lid

The lid of your tank is a very important part of your whole system, covering and allowing access to the tank itself. If you have a metal septic tank, the lid can rust over time and may need to be replaced. Replacing this part, compared to others, is one of the least expensive, ranging from $30 to $70. If you own a concrete lid, this will increase the cost to replace or repair, because special equipment will be necessary to remove the old concrete lid.

Septic tank repairs can be a complicated job depending on various factors, with materials and labor being the main influences. If your septic tank was installed on a slope instead of flat land, this will increase the cost of the overall job. Like the placement of the tank, if the ground in your area is frozen due to outside temperatures, this will also increase the cost. The harder the ground is, the more time and equipment will be needed to complete the job correctly. If the repairs become intensive and require more work, like digging up a large area of ground, the cost of the repair will go up.

Septic Tank Repair

Septic Tank Cost By Size

There are a lot of factors that play a factor in the cost of a septic tank. The size, type, tank material and ground where the tank is being installed all factor into the cost of your septic tank. Other cost factors to consider are the installer’s rates. The septic tank installation will cost between $3,235 and $5,000, with homeowners reporting an average of $4,578.

Tank Size

House Size

Tank Cost

1,000 Gal

3 Bedroom

$600 - $1,000

1,200 Gal

5 - 6 Bedroom

$1,200 - $1,600

2,000 Gal

Small Commercial Building

$1,800 - $2,300

3,000 Gal

Large Commercial Building

$2,900 - $3,900

Septic Cleaning Pump Cost

It’s important to clean and give regular maintenance to your septic tank. Most homeowners don’t think to pump and clean their septic tank until it’s too late. The average cost to pump your septic tank is $363, which is a fraction of the cost to repair a broken septic tank. The final cost of your cleaning will be determined mainly by the size of your tank.

Septic Pump Replacement Cost

Septic Tank Replacement Cost

The average septic tank will have a lifespan of about 15 years, if cleaned and maintained properly. So yes, you will have to replace your septic tank at some point, whether it be from damage or age. The cost of replacing your septic tank will depend on the type of system you’ve installed. The average septic system replacement can range from $6,000 to $50,000. Get connected with a local plumber today to get started on your septic tank project.

  • Gravity System (Basic or standard): $5,000 - $10,000
  • Mound System: $10,000 - $50,000
  • Aerobic Treatment Unit System: $10,000 - $15,000

Septic Tank Repair Cost

Identifying Problems With Your Septic Tank

One of the biggest problems with septic tanks is that some homeowners don't actually notice the small problems until they have turned into much larger ones that become emergency fixes. Things to look for include:

  • Strong and unpleasant odors coming from toilets or showers in your home
  • Low water pressure or standing water above the septic draining field on your property

Importance Of Regular Inspections & Pumping

Although simply being on the lookout for problems is crucial, as mentioned above, it’s also important to have regular inspections for your septic system. We recommend hiring a plumber to inspect your septic system roughly once each year. In addition, you should have your septic tank pumped every three to five years or more frequently if you have a smaller tank or a larger family. Doing so can reduce the sludge and solids that can cause blockages and serious problems in the future.

When comparing the cost to maintain your septic tank and repairing your septic tank, you’ll find that maintaining your tank is the most cost-effective way to keep yours clean and running properly.

Cost To Replace Septic Tank Pump

Common Repairs & Fixes

Problems will pop up while owning a septic pump, it’s important to be prepared and fix the problem when it happens. Not fixing the problem will lead to more problems, often being more serious and more expensive.

One of the most common problems is simply having a tank that needs to be pumped. You’ll be able to tell due to the tank being full and the liquid level being higher than the outlet in the leach field. Also, another common repair is a broken pipe, which will need to be replaced to eliminate any standing and unhygienic water. If you notice any signs of a broken pipe, contact a sewer repair contractor and get an estimate today.

Hiring The Right Contractor

It’s crucial to hire a licensed, insured and bonded contractor for any septic tank system repair. Ask about product warranties, workmanship guarantee, proof of a license and insurance. Along with being licensed and insured, hire a contractor that has plenty of experience with septic tank systems and repairs. Get several estimates from trusted contractors in your area and compare prices, labor and experience.

Find A Local Plumber

Your septic tank isn’t one of the first areas of your home that comes to mind when you think of proper maintenance and care. The average septic tank has a lifespan of 15 years, with proper maintenance. If your septic tank breaks down, or you think it’s time to get it cleaned and inspected, get in contact with a local plumber.

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