Why Does the Type of Soil in My Drain Field Matter?

Your drain field is an essential part of your septic system. Once wastewater travels out of your home and into your septic tank, your tank releases it into the drain field. The drain field is then responsible for filtering the wastewater and releasing it into the ground as clean groundwater. Without a functioning drain field, your groundwater can become contaminated, putting your health and safety at risk, as well as the plants and wildlife in your area. In order to function properly, your drain field needs to be comprised of the proper type of soil.soil

Types of Soil


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.


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.

Risks of Improper Soil

When you have the wrong type of soil in your drain field, your wastewater will not be properly treated, which can lead to contaminated groundwater. If you or your family drinks this contaminated groundwater, there are serious health risks to worry about. Additionally, contaminated groundwater can damage the ecosystem around you, harming the plants and wildlife in your area. When your local ecosystem is interrupted, you could do irreparable damage to the environment. To avoid these issues, consult your septic system company for the ideal placement of your drain field to ensure optimal soil.

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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