What Is a Perc Test and Why Do I Need One?

December 19, 2018 5:09 am Published by Leave your thoughts

Have you heard the term “perc test” and are wondering what this is all about? Is this something you need for your next project? If so, how do you perform this test? Your surveying companies in Mobile, AL have answers for you.

To educate yourself on this process, review the following FAQ. If you have additional questions, don’t hesitate to contact your local professionals who specialize in topographical surveying in Mobile, AL.

What is a perc test?

A percolation test, or perc test, is a test used to reveal the water absorption rate of a specific patch of soil. The test determines how quickly water dissipates into the subsoil.

Why is a perc test performed?

Perc tests are completed when a septic drain field or infiltration basin is going to be installed. Before this structure is built, project managers must determine the ground’s capacity for percolation.

How is a perc test performed?

To complete a perc test, surveying companies in Mobile, AL dig one or more holes in the soil of the proposed project site. Typically, testers drill at least three test holes per septic line. These holes vary in depth from three to six feet underground. Testers presoak the holes, then record the time required for the water level to drop as it percolates into the surrounding soil. The results of this test help determine the size of the drain field needed for the septic system.

What are the required conditions for a septic project?

The exact conditions required for depth of a septic pit and percolation of the soil varies by jurisdiction. However, the testing procedures are standard for most areas. The value obtained from a perc test is shown in a measurement of minutes per inch. This value is compared to local health codes to determine the construction parameters for the septic system.

Who can perform a perc test?

Since perc tests require specific knowledge of land formations and water levels, this testing should be performed by qualified surveying companies in Mobile, AL. These experts will complete the perc test and provide the property owner with the information they need for their proposed project.

What else do I need to know about perc tests?

If you are planning a project that requires a perc test, it’s helpful to know what to expect from the results. Typically, sandy soil absorbs more water than clay soil. Additionally, if the water table is close to the surface, the soil will generally absorb less water.

Who Can I Contact for a Perc Test?

If you need a perc test or any type of topographical surveying in Mobile, AL, contact the professionals at Polysurveying. Since 1972, our team has been providing quality surveying for commercial and residential projects throughout the region. We are dedicated to delivering fast and reliable service while maintaining the high standards that our clients have come to expect from our team. Reach out to us today to find out more about perc testing or to schedule your next survey.

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