What is a Percolation test?

 

A percolation test is a test to determine the water absorption rate of soil

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How Percolation Tests are performed 

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A percolation test consists of digging one or more holes in the soil of the proposed leach field to a specified depth, presoaking the holes by maintaining a high water level in the holes, then running the test by filling the holes to a specific level and timing the drop of the water level as the water percolates into the surrounding soil.​