What is the maximum recommended depth for installation of an absorption field?

The maximum recommended depth for the installation of an absorption field is generally considered to be 24 inches. This depth is important because it allows for adequate soil aeration and microbial activity, both of which are essential for the effective treatment of wastewater.

At a depth of 24 inches, the system can effectively dissipate the effluent, allowing it to pass through the soil where it can undergo natural filtration and treatment processes. If the field is installed too deep, the effluent may not be treated effectively due to reduced interaction between the wastewater and the aerobic microorganisms in the soil profile. This could lead to treatment failures and potential environmental contamination.

The recommendation for a maximum depth of 24 inches balances the need for effective treatment with the physical and biological characteristics of the soil, ensuring proper functioning of the absorption field.