Septic Tank Replacement Cost

Septic Tank Replacement Cost

The toilet won’t flush. The bathtub won’t drain. And, all of a sudden, you catch a whiff of a foul stench. 

This can only mean one thing: septic system failure. 

You need this fixed – and pronto. But, how exactly should you go about figuring out your septic tank replacement cost?

Septic tanks are not usually at the forefront of everyone’s mind. After all, most people prefer not to think about household waste. Unfortunately, the topic of septic tanks can’t be avoided forever – especially when there’s a problem! Though underground septic systems can last anywhere from fifteen to forty years, they’re bound to deteriorate over time. If you’ve noticed unpleasant odors, clogged drains, and bright green grass coming from your outdoor septic area, a fix may be in your future. Knowing the details about septic tank replacement cost is your first step! 

Fixing the Problem

Before making any moves, it’s necessary to determine where the problem is coming from. Pinpointing the issue right away is the best way to get a proper estimate of your septic tank replacement cost. Septic tank failure can be attributed to several factors, including the following: 

A Faulty Pump

Though not every septic system has a septic pump, it’s still beneficial to be aware of the telltale signs of pump failure. If you’re currently dealing with foul odors, pooling drains, and backed-up sewage, you’ll likely be needing a new septic pump very soon. The average cost of this replacement usually falls around $1,000. 

An Old Filter

Starting to hear gurgling noises coming from your toilets, sinks, and bathtubs? This may be a sign of a clogged septic filter. The maximum cost of replacement is usually around $300. 

A Flooded Drain Field

If you’re smelling repulsive odors, dealing with backup, and noticing that appliances are slow-to-drain, you may have a flooded drain field. While the average cost of repair is around $4,000, prices may reach up to $20,000 (depending on the size of the area). 

Knowing the Details

If you’re looking for a new septic tank entirely, it’s recommended that you consult local professionals in your area. Septic tank replacement costs may vary depending on the material that you decide to use. The most common materials used for septic tanks include:


Concrete septic tanks are sturdier than septic tanks made from other materials. Due to their strength and ability to handle rust, concrete septic tanks can last up to forty years (however, if poor quality, they may fail sooner). These long-lasting and worthwhile septic tanks usually cost anywhere from $1,000 – $2,000. 


Though tough-sounding, steel septic tanks are not as strong as one may think. While steel septic tanks are sturdy, they are extremely affected by rust and other elements. Owners of steel septic tanks must make sure that they are regularly cleaned to prevent deterioration. The average lifespan of a steel septic tank is usually around seventeen years, and because of this, steel septic tanks are not always encouraged. Septic tank replacement cost while using steel may range anywhere from $1,000 to $10,000. 


Plastic is certainly not one of the strongest materials (especially when compared with steel and concrete). However, plastic septic systems are very durable. This durability allows these septic systems to last around thirty years. Though typically more difficult to install, plastic septic tanks usually cost anywhere from $1,000 to $1,500. 

Preventing Future Issues

Whether you’re hoping to install your first septic system or looking for a septic repair, it is essential to know how to take care of your septic system. Septic tank lifespans may vary depending on the following factors: 

How Often the Tank is Pumped 

As a general rule of thumb, septic tanks should be pumped and inspected every couple of years. A professional’s guidance and advice should always be taken into account. 

The Septic Material 

Rust is never good news. If you do have the option to install a new tank, try using either plastic or concrete, as steel tends to rust easily. 

Natural Surroundings 

Tree roots are often drawn to wet, watery areas. Unfortunately, septic pipes are not exempt from this tree root attraction. Septic pipes may face damage from roots aware of the trees and plants in your septic area. 

Amount of Water Used

If all of the water from the house runs through one pipe, improper drainage is bound to occur. To prevent contamination, it’s safe to keep water usage to a minimum.

Choosing the Right Size of Tank

Depending on the size of your house, you may need a bigger septic tank. It is recommended that most houses install a tank that can hold at least 1,000 gallons. However, for bigger homes, a larger tank may be necessary. Though the septic tank replacement cost may be more, the investment is worth it in the long run. 

Septic Tank Replacement Cost Summary

 A faulty septic tank can put a real damper on things. Knowing where the problem is coming from is essential for septic tank replacement. And, when installing a new septic tank, the chosen material can make all the difference. As long as a septic system is properly taken care of, it should last plenty of time.

Written by: Erica Day

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