Installing a septic tank should probably be left to the professionals, but for the particularly handy individual or for homeowners installing a new tank to replace an old or damaged one, it’s a doable task.
If you’re replacing an existing tank, think about getting a septic tank inspection in Lawrenceville. You may find that septic tank repair in Lawrenceville will fix the problem. However, if you determine you’ll need to install a new tank, here are a few things you should know.

State and Local Health Regulations

Before you start digging, you will need to apply for a permit from the city, county, or state. In some cases, you may also need a federal permit. The permitting system can require a site plan, or a detailed map of how your system will be laid out, as well as information about the size and type of septic tank you intend to install. Some localities may require tests to make a size and type determination. Plan ahead, because the permitting process can be onerous.

Gravity-fed Systems

In a gravity-fed septic system, the power of gravity will assist the flow of effluent. Essentially, this means your drainfield will need to be lower than your septic tank. These systems require a concrete aerobic divided tank and a perforated pipe embedded in the drainfield gravel.

Alternate Septic Systems

Gravity-fed septic systems are the most common type, but if using gravity to move effluent isn’t reasonable, alternate septic systems use a pump to move waste out of the septic tank. Installing this type of system requires the installation of electric systems to run the pump as well as the installation of the tank. This sensitive work requires the assistance of a licensed electrician.


Gravity fed tanks are two-part tanks. The bottom section goes into the hole first. This tank will receive effluence after initial bacterial breakdown, which occurs in the top half of the tank. The top half will go into the hole second. It is the immediate receiving point of waste from the home or building.

Install Pipe

In addition to burying the septic tank, you’ll also need to install piping through which effluence will move to the drainfield. Most localities will have specific requirements for the pipe. They may require certain size pipes, specific pipe materials, or specific gravel to be used around the pipe.


Before recovering the hole, most localities will require that your work be inspected. Once you have regulatory approval, you can cover the tank and pipe.
That’s a quick explanation of the steps to installing a septic tank. A home’s septic system is of critical importance—not only because it performs a necessary function, but also because a failing or poorly installed system can cause health and environmental problems. If you’re uncertain about septic tank installation in Lawrenceville, a professional can answer your questions and ensure the job is done safely and correctly.