How does a Septic System Work?

While many people have heard of a septic system, most don’t have much of an idea of how it works. With that in mind, we here at S.O.S. Plumbing know septic systems and thought it might be a good idea to walk you through the process.

Septic Systems

A septic system is an underground wastewater treatment structure. Usually you’ll find them in areas that don’t have a central sewer system. There are usually two main parts, a septic tank and a soil absorption field.

The septic system will digest organic matter and separates out solids and floating matter, think oil and grease. It will discharge the fluid into leach fields, chambers or some other unit that will slowly release it into the soil.

How does a Septic System Work? | S.O.S. Plumbing

How it works

A septic system works in the following way. All your water will run out of the house into the septic tank. This tank is a buried, water-tight container. It will hold the wastewater long enough to let solids settle down and oil and grease float to the top. It is designed to prevent the scum on the bottom from leaving the tank.

The liquid waste water then exits the tank into the drainfield. Usually this field is shallow and covered. The wastewater leaves through the perforated pipes that allow it to filter into the water. The soil will accept, treat, and disperse the water. Finally, the wastewater percolates into the soil, which will get rid of any harmful bacteria, viruses, and nutrients.

About S.O.S. Plumbing

S.O.S. Plumbing works on septic systems. We are an Angie’s List “A” rated business with a reputation for dependable, affordable plumbing. Based out of Palm Springs, California, we service many of the desert communities by providing quality residential service and repair, drain cleaning, water and gas re-pipes, and more. When you need our services just visit