Conventional Septic System Design

Septic System Drainfield InformationHomes, cabins and business that are not served by a public sewer system usually depend on an Individual Septic System to safely dispose of wastewater. There are several different types of septic systems currently being used in an around Elk River, MN. This blog post will focus on the Soil Treatment Area known as a Drainfield, Leach Field, Absorption Bed or Drainage Field. No matter what you call it, it provides the same kind of function in a Conventional Septic System. As a Licensed Septic Contractor, CSI Custom Septic, Inc. provides several services needed for MPCA compliant drainfield operation.


What is a Soil Drain Field?

A Soil Drainfield is one of the two main parts of a conventional septic system that you can find in a large portion of the country. The septic tank is the other dominant feature of private sewage systems. A Soil Drainfield functions as a Natural Waste Water Filtering System to remove impurities before septic tank liquids are distributed back into to the earth and groundwater below.

Septic Tank | Drainfield | Well Water

Most people have a basic understanding of what a Septic Tank is and what it does. However, if you ask anyone who has spent their lifetime paying for city water and sewer services about a Drainfield you may get a blank stare. Chances are pretty good that if you have Well Water that you also have a septic tank and drain-field located on the property.


5 Layers of Septic Soil Drainfield

The science of how a Septic Drain-field Works relies upon Chemical and Biological Processes as the effluent (septic tank liquids) percolate through the soil below the drainfield area. Soil that is a bit dry and contains lots of oxygen is much better than clay-type soil. Original soil that is permeable is best suited for several feet below the drain field surface. Layers of a typical Septic Drainfield:

  1. Ground Surface
  2. Backfill
  3. Perforated Pipe
  4. Washed Gravel
  5. Original Permeable Soil


How Does My Septic Drain-Field Work?

There is usually around 100 feet distance between a Well and a Septic Tank. The Soil Drainfield is even a further distance away because water that flows out of the septic tank then goes into the drainfield and filters through gravel filled trenches or beds. The wastewater is organically treated as it absorbs through the soil beneath the drain-field before it eventually makes it all the way down to the groundwater.


Licensed MN Septic Contractor

CSI Custom Septic Inc. is a Licensed Minnesota Septic Contractor with decades of experience with several types of septic systems. Septic Designs usually include a Soil Drainfield that can do an excellent job of filtering and removing bacteria, pathogens and nitrates as the partially treated sewage water percolates down through the multiple layers of a drain field. Regular Inspections are a good way to keep your drainage field operating as it should.

In Elk River, contact CSI Custom Septic Inc. at: (763) 218-4769 for Septic Drainfield Inspections and Repairs.