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What Type of Soil Should Make Up My Drain Field?

Posted by ADB Septic on August 3, 2017

The type of soil in your drain field is essential to its functionality. The soil is in charge of filtering water and disposing of waste in the drain field. Therefore, it needs to contain organisms that feed on bacteria in the effluent in order to control its toxicity. Below is a discussion of the different types of soil and the proper type to have in your drain field.

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Clay Soils

Clay soils are not ideal for drain fields because they do not provide enough room for effluents to easily flow through. This density will create drainage issues in your yard and backups in your septic system. Clay soils typically bond to sodium molecules in wastewater, blocking the effluent from draining properly. Over time, this bonding can lead to drain field failure.

Course Soils

Soils made up primarily of gravel or other course materials are too course and will cause the effluent to pass through too quickly. When the effluent passes through at this rate, it will not be filtered at all. This lack of filtration can contaminate your water supply and cause issues in your yard. This unfiltered effluent will cause waste buildup in your yard and toxic smells.

Ideal Soil

The best type of soil is a happy medium between clay and gravel that is not too dense or too loose. The mixture of the two will allow the soil to filter the effluent while draining properly and keeping the septic process functioning properly. In order to ensure ideal filtration, there needs to be a good balance of course and fine soil.

Attaining Ideal Soil

In order to find out if your soil is the proper consistency for a drain field, you should call in an expert for soil tests. If your soil is not the proper consistency, it doesn’t mean you can’t install a septic system. Another type of soil of a different consistency will simply need to be added to your existing soil. Be sure to contact an expert about your soil consistency. They will work with you in order to make adjustments to ensure your soil is the ideal consistency.


The best way to ensure a functional drain field is to make sure your soil is the proper consistency before installing a septic system. When the soil is ideal from the beginning, your septic system and drain field will function properly. Unsuitable soil can cause issues in the future that will result in expensive repairs. If your drain field fails, your water becomes toxic, or your septic system experiences backups, you will need repairs that will be very costly and time consuming. To avoid these risks, test your soil early on to ensure that you will not run into problems later on.


ADB Septic | CT Septic System Services

A.D.B. Construction & Septic Corp. is a septic services business in Manchester, CT. We proudly serve residential and commercial customers all over Hartford County and beyond with a full slate of services. With over 20 years of experience, we have completed countless projects of all scopes and sizes. Needless to say, there is nothing we can’t do when it comes to septic tanks, sewer systems, basement waterproofing, drains, and more.

Our business is committed to meeting your needs and completing your job with the utmost professionalism and precision. We put your satisfaction, safety, and comfort at the forefront of our priority list. When you hire us, you can achieve complete peace of mind.

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Topics: Drain Field, Soils, Soils for Drain Fields, Drain Field Failure

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