A septic drain field is a wastewater disposal system used to remove contaminants and impurities from the emerging fluid after anaerobic digestion in a septic tank. The drain field typically consists of an arrangement of trenches containing perforated pipes and gravel covered by a layer of soil. The system provides an effective way of treating wastewater.
A percolation test is required by many health departments to know if the soil can receive septic tank effluent. An engineer or licensed designer may be required to work with the local government to design a system that meets specific criteria.
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