The location of a septic tank determines the safety and efficiency of the septic system. Here are some of the factors that make a location suitable for septic tank placement.
Absence of Underground Utilities
One of the most dangerous things you can do is to place a septic tank on the same place occupied by underground utilities. The installers can hurt themselves (think electrical shock) or cause infrastructure damage (broken water pipes come to mind). These risks are there not only during the installation period but also during service or even daily use of the septic system.
Fortunately, you just need to confirm where the underground utilities are and avoid the area. You just need to call 811, and someone will map the location of the buried utilities for you. Do this a few days before the digging commences.
The septic tank should be on even ground for optimal performance. Flat ground is suitable for two main reasons. First, the tank will be able to sit upright in the ground, allowing you to make use of the tank's full capacity. Secondly, a flat ground will help treated liquid waste percolate into the ground efficiently. If you place the drain field on a slope, some of the liquid wastes may flow down the slope instead of seeping into the ground.
Placing the septic tank and drain field in a valley can easily lead to flooding due to the septic drain field. The ideal location should be relatively high compared to the surrounding lands.
Too much water in the septic drain field is bad for your septic drain field's efficiency. The treated water from the tank should be able to percolate into the ground as soon as it gets into the drain field. If the drain field is flooded, the waste might stay above ground for a long time, denying further waste their disposal chance.
You also need to test the soil before settling on a septic tank location. For the tank, the soil should be relatively firm so that the tank doesn't float out of the ground when it rains. For the drain field, the soils should be relatively permeable so that any liquid wastes that empty into the drain field sinks into the ground as soon as possible.
As you can see, septic tank placement is not a simple affair. The good news is that you don't have to confirm the above factors on your own. Professional septic installers can help you choose a suitable location for the installation.
Visit a website like http://www.southernsanitarysystems.com to learn more.