Residential Septic System Installation: A Comprehensive Guide

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The Tank Beneath You

If you are someone with a septic system, have you ever walked outside, stood in your yard, and thought about the tank and greater septic system that lies beneath your feet? There's more to this system than you might know. It's not just a septic tank. It's a system of pipes that carry waste water away from the tank, and it's also a drainfield, made from soil. The next time you call a septic service to care for your tank, watch them work and ask questions. Also, make sure you spend some time reading this blog to become more aware of the basics.


Residential Septic System Installation: A Comprehensive Guide

22 August 2023
 Categories: , Blog

Installing a residential septic system is a crucial step in providing proper wastewater treatment for homes not connected to a municipal sewer system. A well-designed and installed septic system ensures environmental protection, public health, and the long-term functionality of the property. Below is a comprehensive guide to residential septic system installation, covering key aspects such as planning, permits, design, excavation, installation, and maintenance.

Planning and Permits

Before beginning a septic system installation, thorough planning is essential. This phase involves determining the system's size, location, and type based on factors like soil conditions, property size, and local regulations. The first step is evaluating the site. A qualified professional assesses the property's soil composition, topography, and drainage characteristics to recommend the appropriate septic system type.

The professional will then make sure the permits are in place. They do this by contacting local health and environmental authorities to obtain the necessary permits. Regulations vary widely, so it's crucial to understand the specific requirements for your area.

Designing the System

A properly designed septic system considers the property's specific conditions to ensure effective waste treatment. Considerations include:

  • Tank Size: Choose a septic tank size based on the household's daily water usage. Proper sizing prevents premature tank filling and maintenance issues.
  • Drainfield Design: Design the drainfield (also known as the leach field or absorption area) based on soil percolation rates and property size. The drainfield's size determines its ability to absorb and treat wastewater.

3. Excavation and Installation

The installation process involves several critical steps. First, the area will be evacuated for the septic tank, distribution box, and drainfield trenches according to the approved design.

The next step is the tank installation. The professional places the septic tank in the excavation, ensuring it is level and properly aligned. The inlet and outlet pipes are connected and backfill is placed around the tank.

The distribution system is then installed. With this, the distribution box and pipes are connected to the septic tank. The distribution box evenly distributes wastewater to the drainfield pipes. The last step is installing the drainfield. The contractor will lay perforated pipes in the trenches with proper spacing. They cover the pipes with gravel to promote even wastewater distribution and prevent clogging.

Inspections and Testing

During installation, several inspections and tests are typically conducted to ensure proper functioning:

  • Pressure Test: Check for leaks in pipes, tanks, and connections by pressurizing the system and observing for any pressure drop.
  • Percolation Test: Conduct a percolation test to verify that the soil's permeability is appropriate for effective wastewater absorption.

After inspections, the contractor carefully backfills the trenches and covers the drainfield area. The landscape is then restored as closely as possible to its original state.

For more info about residential septic tank installation, contact a local company.