Septic Systems

Sprague’s Backhoe has been installing & repairing septic systems in Oklahoma since we opened in 2013 and have over 15 years experience in septic system installations. We have worked hard to earn a reputation for quality, honesty & integrity. From the first phone call to completion of your job, we guarantee that you will be 100% satisfied with our company and services.

Sprague’s Backhoe is LICENSED AND INSURED and highly skilled at operating & working in tight spaces. Regardless of the type of septic system you end up with, you can be sure that it will be done right the first time. We use high quality materials and most importantly, we don’t cut corners.

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Three Types of Septic Systems:

Conventional Septic Systems
Aerobic Systems

Oklahoma DEQ requires homeowners to perform a soil test before the installation of your septic system in order to determine which type of system would be most efficient and cost effective on your property. If you need help finding a certified soil tester in your area, call Sprague’s Backhoe, we can recommend one for you.

While it’s impossible to make it look like we haven’t been there at all, we spend extra time after the installation dressing up your yard as best as we can.

Sprague’s Backhoe will have lines located through OKIE 811 before the installation. The homeowner is responsible for marking private lines, such as water and gas.

Conventional Septic Systems

Also known as lateral lines and leech lines, a conventional septic system is often less expensive and more efficient than an aerobic system but only with absorbent soil, which will be determined by the soil test.

This type of system should be installed in a large open area with no trees, gentle slopes, good drainage and no vehicle traffic.

In most cases, we can install a conventional system in one day. Depending on the DEQ requirements of your system, it could take two days to complete.

Conventional Septic System Components

Image Source: DEQ

Components of Conventional Septic Systems

These systems consist of a 1,000 gallon tank and an absorption field consisting of trenches with rock and pipe or leaching chambers called lateral lines. The waste is absorbed into the soil where bacteria, viruses and pollutants are broken down and destroyed by naturally occurring organisms.

Aerobic Systems

Also known as a Spray Irrigation System, an aerobic system is suitable for use in almost any soil condition and does not require a large area.

Oklahoma DEQ requires septic installers to warranty and maintain new aerobic systems for two years and we meet these requirements on every installation.

A typical aerobic installation is done in one day.

Aerobic System Components

Image Source: DEQ

Components of an Aerobic System

These systems consist of a trash tank, an aeration chamber, a disinfection chamber and surface dispersal fields. These components treat, disinfect and disperse the treated wastewater.


Lagoons are an effective waste treatment system in central and western Oklahoma and are fairly easy to maintain. Per DEQ, lagoons can only be constructed on a piece of land that is at least 2.5 acres. Lagoons must be located in a sunny area where trees and other structures will not restrict sunlight exposure or air flow.

Components of a Lagoon

Lagoons consist of a 1,000 gallon septic tank and the lagoon. Wastewater flows from the house into the septic tank where liquids separate from solids. The heavy solids sink to the bottom of the tank while the light greases and scum float to the top. After about 24 hours, the natural bacteria in the tank start to breakdown the material in the wastewater. The treated liquids flow out of the septic tank and into the lagoon. The sludge and scum stay in the septic tank, so pumping your tank every 2-6 years will prevent them from clogging the outlet or spilling into the lagoon.

Contact us today to schedule your free consultation!

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