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A percolation test (colloquially called a perc test) is a test to determine the water absorption rate of soil (that is, its capacity for percolation) in preparation for the building of a septic drain field (leach field) or infiltration basin. [1] The results of a percolation test are required to design a septic system properly.
Many health departments require a percolation test ("perc" test) to establish the suitability of drain field soil to receive septic tank effluent. An engineer , soil scientist , or licensed designer may be required to work with the local governing agency to design a system that conforms to these criteria.
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt):
Soil testing labs are typically less busy in the fall compared to the spring, allowing you to receive results back from the lab more quickly. Soil testing should be done once every three years.
For example, in geology, percolation refers to filtration of water through soil and permeable rocks. The water flows to recharge the groundwater in the water table and aquifers . In places where infiltration basins or septic drain fields are planned to dispose of substantial amounts of water, a percolation test is needed beforehand to determine ...
The soil in those pots may be anything from potting mix, which is good, to heavy soil dug up from the back of the greenhouse or even pure sphagnum moss. ... A fresh batch of potting soil will perk ...