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After liquid leaves your septic tank, it flows to the drain field for removal of contaminants and impurities. If the system isn’t designed correctly, foul sewage might seep through the ground to the surface and wastewater could flow into nearby streams. Fortunately, the professionals at Valley Excavating know how to prevent these problems. Based in Kalispell, MT, the company provides Flathead Valley residents with effective septic installation, land clearing, and excavation solutions and offers advice for an optimal drain field layout.

3 Drain Field Design Tips for Septic Installation

1. Test the Soil

Septic installation Kalispell MTBefore you finalize a location for your drain field, you need to determine the water absorption level of the soil with a percolation test. Drill holes 3 inches in diameter and 3 feet deep throughout the potential site. Pour water into the holes to see how long it takes to dissipate. The results will help you specify the proper size and location of the drain field.

2. Develop a Plan for Piping 

The drain field is an intricate network of pipes buried in a series of trenches. To prevent cracks and other damage to the piping, ensure the area is free of tree roots and other obstructions. Ideally, the drain field should be 30 inches deep with trenches dug at a slight angle. This will leave room to cover the piping with gravel. 

3. Make a Detailed List of Materials You Need 

A common problem during septic installation is not having enough perforated piping to extend from the tank to the drain field. Installers also might lack enough gravel to cover the area. You can prevent delays by making a list of how much of each material is required before you begin your project. 

If you need septic installation, site preparation, or land-clearing service in Montana’s Flathead County, Valley Excavating can help. Call (406) 857-2086 for a free estimate and visit them online for information about how they can improve the efficiency of your septic system. Like them on Facebook for updates from their excavation contractors.  

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