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4 Components of a Septic Tank

4 Components of a Septic Tank

At One Way Septic Service, septic tanks are one of the things we do best. Understanding the components of your septic tank is essential for proper maintenance and ensuring the longevity of your septic system. With over 28 years of experience in septic system service, we’ve got you covered. In this article, we’ll go over the four key components of a septic tank and how they seamlessly integrate to form a septic system.

Inlet Pipe and Baffle

The inlet pipe is the entry point for wastewater from your household plumbing into the septic tank. It directs the flow of wastewater into the tank, allowing for proper settling and separation of solids and liquids. The baffle, often located near the inlet pipe, helps prevent the accumulation of solids from entering the outlet pipe, ensuring that only properly treated sewage leaves the tank.


The septic tank itself is the main component of your system. It is a watertight underground container that holds and treats wastewater. A sewer tank’s size depends on its use case, such as household or business size and water usage. Regular service is crucial in order to prevent clogs, backups, and system failure. One Way Septic Service specializes in all types of tank service, from routine inspection to full tank replacement.

Outlet Pipe and Sewage Filter

The outlet pipe carries treated sewage from the septic tank to the drain field for further treatment and absorption into the soil. It is essential to ensure that the outlet pipe is properly connected and free from clogs or damage. A filter installed on the outlet pipe helps prevent solids from leaving the tank, protecting the drain field and ensuring its longevity.

Drain Field or Leach Field

The drain field is the final component of your septic system. It consists of a network of perforated pipes or trenches buried in the soil, allowing the sewage to gradually seep into the ground, where natural processes continue to purify it. Proper maintenance and service are essential to preventing issues that can lead to system failures, such as clogging or saturation.


Understanding the four key components of a septic tank — namely, the inlet pipe and baffle, the septic tank itself, the outlet pipe and sewage filter, and the drain filter — is essential for the proper functioning and longevity of your septic system. Regular septic tank services, including pumping, maintenance, and inspections, are crucial to ensure optimal performance and prevent costly repairs. If you reside in Kennesaw, Marietta, Woodstock, Canton, or Dallas, you can rely on One Way Septic Service for all of your septic tank maintenance needs. Click here for a list of our septic tank services.