What is a Septic Tank?

Aug 11, 2021

What is a Septic Tank?

While some people may be very familiar with septic tanks, there are just as many people who have no idea what a septic tank is and what it does in your home. A septic tank is an underground sedimentation tank that’s main job is to bring waste away from your home and treat it through the process of decomposition and draining. When it comes to septic tank knowledge, there is only one team to learn from, and that’s Septic Blue of Charlotte!

Mitch Kranes

Tim Grant of Septic Blue performed our septic system service. He was fantastic. Tank had not been serviced in a…

Tim P.

Bret Brooks arrived on time, was completely professional and courteous.  I needed my septic tank pumped and a riser installed.…

Ashley Maylott

We are renovating a home that has a septic tank. We contacted Septic Blue and scheduled an appointment. They came…

Eric Lehtinen

Bret was professional and courteous.  Bret walked me through his process and explained everything to me.  When it came to…


The design of septic tanks is very simple. It uses different natural processes to treat wastewater from your household appliances such as your toilet, your sinks, showers, etc. Your septic tank is underground and contains watertight pipes that your wastewater flows into.

Septic tanks are necessary for every single home since they help to make sure the water coming into your home is clean and healthy, while also breaking down any solids that leave your household. If you are interested in learning more from the team at Septic Blue of Charlotte, either give us a call today or keep reading!

How Does a Septic Tank Work?

As we said before, septic tanks take dirty water and waste away from your home, clean and filter it, and then allows clean water to enter back into the system. Your septic tank digests organic matter and separates it from things that float such as oil and grease, as well as solids that enter into your septic tank.

Your septic tank has piping all throughout your home that then connects to the main drainage line which is underground around your home. Your tank is connected to the main drain with two pipes (one that allows the waste in, one that allows the clean water out). Here is the step by step process of how your septic tank works:

  1. Water from your drains (kitchen, sinks, showers, toilets, etc. will run through your main drain and lead to your underground septic tank and pipes
  2. The underground septic tank holds the wastewater, while the solid materials in there can settle to the bottom, and the oils and greases float to the top of the tank
  3. After everything is settled, the wastewater will leave the tank through the outlet pipe and enter the main drain field
  4. Your wastewater that left your tank then goes into the soil around your home and gets filtered
  5. The soil soaks up this wastewater, treats it, and disperses it into the surrounding ground
  6. Lastly, the wastewater penetrates into the soil where the soil naturally removes any harmful bacteria, viruses, nutrients, etc.

If you’re interested in learning more about your septic tank, or you need your septic tank inspected, there is no one to call but Septic Blue of Charlotte! We are a team of septic plumbers who can handle any problem you throw at us. Whether you need regular maintenance, a touch-up, or a septic tank installation, we can do it all! Give us a call today for a quote or appointment.