septic riser

Leach field installation

Leach field installation

As you may have already guessed, a septic tank by itself won’t be very helpful. A comprehensive septic system with a leach field installation is what you require.

This is why: To distribute the wastewater back into the earth and stop your septic tank from overfilling, a properly operating leach field is essential.

A new leach field alone might cost anywhere from $3,250 to $15,300.

The price varies according to the technology you’re utilizing and the size of the field.

The least expensive option is a leach field for a traditional, gravity-based septic system.

pumps alarm price

Your septic system can optionally include a pump alarm. Its function is to notify you if the water level in your septic tank rises or falls or if the pump fails.

This will enable you to address the problem quickly before it results in more significant damage and call a plumber.

Find out if a pump alarm might be a good choice for your system by speaking with the person who installed your septic tank.

Your project would typically cost an additional $475 to install a pump alarm.

Septic Riser

Another optional, but incredibly useful, component of a septic system is a septic riser.

Although it adds an additional $300 to $600 to the cost of your tank installation, a septic riser will almost certainly end up saving you money over time.

Septic risers get their name from the fact that they raise the entry point to your septic tank to the surface, which makes regular maintenance simpler for professionals and less expensive for you.


Cost of a percolation test

You must have a percolation test performed by a licensed engineer prior to installing your septic system to determine the type of soil your installer will be working with and the depth of the layers in the ground (water table, bedrock, etc).

The type of system that will work best for your property will be determined by the results of the perc test.

The perc test could be performed for you by your septic tank installation, or you might need to engage a different expert.

In either case, budget $670 to $1,430 for the test.


Septic Tank Installation Costs Vary by Location

The terrain, climate, and soil type in your specific area will determine the type of septic system you should use, as well as the overall cost of the project. Consult a local expert to determine the best type of septic system for your area as well as the average cost.

Labor costs differ by location as well.

A homeowner in a metropolitan area will almost certainly pay significantly more for a new septic system than a homeowner in a rural area.

We calculated the national average labor cost, but the price you actually pay may be significantly lower or higher. To get a good idea of labor costs in your area, get at least three estimates from local professionals for your septic tank project — or any home improvement project.


A new septic tank or septic system will always cost at least a few thousand dollars, whether for new construction or existing property. Professional installation costs about $5,828 on average, with a typical range of $3,138 to $8,518.

The overall project cost is determined by the type of septic system used, the size of your home, and any additional services required to complete the installation.

Though the average price range is a good starting point, keep in mind that you could pay as little as $1,013 or as much as $18,163.

Most importantly, DO NOT attempt to install your own septic tank unless you are a professional plumber or a septic system specialist.

DIY isn’t worth the risk in this case, no matter how handy you are or how much money you think you’ll save.