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It has been suggested that this article or section be merged with Trickling filter. (Discuss) |
Septic drain fields are used to remove contaminants and impurities from the liquid that emerges from the septic tank. This is typically done by burying perforated pipes in trenches and allowing the liquid to leach out and the surrounding soil absorbs the unwanted waste. Another term for this is a leach field or french drain.
The design of the septic drain field is determined by the size of the dwelling that it serves and the soil conditions. The soil conditions would be tested by a method called a percolation test or perc test. An engineer or licensed designer may be required to work with the local governing agency to design a system that conforms to these criteria.
A septic tank, the septic drain field, and the associated piping comprise a complete septic system.
When a septic tank is used in combination with a biofilter the height and area of the drain field can be reduced. This technology allows higher density residential construction, minimal site disturbance, offers more usable land for trees or swimming pools or gardens, and greatly reduces the chances of the drain field plugging up.
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