Understanding The Use Of Septic Systems With A High Water Table

When your home is outside the city’s sewer system reach, you’ll have to install a septic system. Septic tanks give you an independent waste management structure, though they aren’t without their challenges. For example, if your property has a high water table, it can make septic tank use a bit more difficult. Here’s a look at what you should know to help ensure the success of your septic system despite the high water table.

Why is a High Water Table a Big Deal?

To understand why the water table matters to your septic system, you have to understand how both work. An underground septic system is a combination of a large septic tank and a corresponding drain field. Waste water seeps from the tank into the drain field for filtration.

There are two distinct layers of water beneath ground level. The top layer is a combination of surface water, rock, air and soil. Below that is the ground water, which makes up the second layer. There are no air pockets in that second layer – it’s heavily saturated with water. The top of the ground water layer is referred to as the water table. The depth at which this layer starts can vary, and it can be altered with the season, particularly during the rainy season.

If the layer of ground water is too high, otherwise known as a high water table, it can hinder the top layer’s ability to absorb waste water. And, that excess ground water may actually lead to oversaturation of the drain field, which may force the waste water back into your home or above ground.

What Do I Do If My Home Has a High Water Table?

There are a few things that you can do to limit the effects of the high water table on your septic system, starting with the installation. Talk with the septic system technicians about the size of the tank installed in your system. Make sure that you have a tank large enough to account for your heaviest estimated system use. If you have a lot of people over regularly, that added traffic (and potential excess waste water generation) should be taken into consideration.

Once you’ve chosen a large enough tank, you should set up a pumping cycle that’s more frequent than you might otherwise expect. Pumping the tank more often will help keep the liquid from accumulating in the tank. When you keep the liquid levels from accumulating, you reduce the chances of any liquid flowing into the drain field.

Finally, you’ll want to consider a water treatment system that the water can flow through before it reaches the drain field. This can help reduce the hazards associated with oversaturation, because many contaminants have been filtered out. Systems like recirculating sand fill units can treat pathogens in the water before that water reaches the drain field. These systems filter the water through sand several times in a purification effort.

For professional septic tank service, contact a company such as River City Septic & Excavating.