What to Expect With Septic System Installation

Mar 3, 2023Septic Systems0 comments

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What to Expect When Installing a Septic System: A Comprehensive Guide

If you’re building a new home or replacing an outdated septic system, you may be wondering what to expect during the installation process. Installing a septic system is a complex process that requires careful planning, specialized heavy equipment, and experienced laborers. In this blog post, we’ll take a closer look at what you can expect when installing a septic system.

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Site Evaluation

Before installing a septic system, a site evaluation must be conducted to determine the best location for the system. This evaluation involves assessing the soil type, topography, and groundwater levels to determine if the site is suitable for a septic system. If the site is deemed suitable, the septic installer will determine the size and type of septic system that is best suited for the site.


Once the site evaluation is complete, the septic installer will apply for the necessary permits from the local health department or regulatory agency. These permits ensure the septic system is installed according to local codes and regulations. The permitting process can take several weeks, so it’s important to plan accordingly.


The installation process begins with excavation. The septic installer will use heavy machinery to dig a large hole in the ground where the septic tank will be placed. The size of the hole will depend on the size of the septic tank. The septic installer will also dig trenches for the drain field or leach field.

Septic Tank Installation

Once the excavation is complete, the septic tank will be installed. The tank is typically made of concrete or fiberglass and is designed to hold and treat the wastewater from your home. The tank is placed in the hole and leveled to ensure proper operation. The septic installer will also install inlet and outlet pipes and the septic tank riser, which is a vertical extension that brings access to the tank’s opening to ground level.

Drainfield Installation

After the septic tank is installed, the septic installer will dig trenches for the drain field. The trenches are filled with gravel or sand and perforated pipes are laid on top of the gravel. The pipes allow the treated wastewater to percolate into the soil, where it is further treated and filtered before entering the groundwater. The drain field size and layout depending on the size of the septic tank and the soil type.

System Connection and Testing

Once the drain field is installed, the septic installer will connect the septic tank and drain field with the appropriate pipes. The installer will also add effluent filters to the tank outlet and riser to ensure that only treated wastewater leaves the tank. Finally, the installer will fill the tank with water and add bacteria to jumpstart the treatment process. A final inspection is required before backfilling and covering the system.


After the septic system installation is complete, it’s important to maintain the system properly to ensure its continued operation. Regular maintenance includes pumping the septic tank every 3 to 5 years, conserving water usage, and not flushing non-degradable items such as sanitary wipes, cooking grease, or feminine hygiene products. Proper maintenance can prevent system failure and costly repairs down the line.

In conclusion, installing a septic system requires careful planning, specialized equipment, and skilled labor. The installation process includes site evaluation, permitting, excavation, septic tank installation, drain field installation, system connection and testing, and maintenance. It’s important to hire a qualified septic installer and to follow all local codes and regulations to ensure the safe and efficient operation of your septic system. With proper maintenance, your septic system can provide years of trouble-free service.

Coal Creek Excavating

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