Pros and Cons of Aerobic Septic Systems

Septic systems are needed in areas without access to standard drainage systems. Your house may become a health danger if you don't have the right equipment to eliminate waste. Anaerobic septic systems, the most popular type, typically between $2,000 and $5,000. Pumping out these systems is necessary for maintenance. Your septic tank needs to be cleaned every five years.

We'll explain to you what aerobic systems are, how much they cost, how they operate, and their benefits and drawbacks.

What are Aerobic Septic Systems?

A sewage treatment system known as an aerobic septic system, also known as an aerobic treatment system (ATS), differs from conventional septic systems in that it uses an aerobic process to break down waste.

In a typical septic system, sediments, fats, and grease are broken down and separated in the septic tank. In an anaerobic system, oxygen is added to the tank to aid in the same digestion.

Like septic systems handle waste, an ATU(Aerobic Treatment Unit) uses natural processes and a bacterially rich environment to break down effluents.

How does the Procedure Operate?

There are several steps to the wastewater treatment process. Let's examine each of these phases individually.

Earlier Stages of Treatment

The wastes are discharged into the ATU's(Aerobic Treatment Unit) settling tank or garbage tank. The liquid wastes rise to the top of this tank while the solid wastes settle at the bottom.

The Aeration Phase

The wastewater exits the waste tank at this point and enters an aeration tank. This tank's function is to house the equipment needed to add oxygen to the wastewater.

A blower or air compressor introduces air into the chamber containing the effluent. This oxygenation encourages the development of microorganisms that aid in the breakdown of solid wastes and transform waste into sludge.

The Cleaning Phase

During this phase, chlorine or UV light must disinfect the liquid effluents leaving the ATU.

The Phase of Disposal

The effluents are discharged into a drain field, sand filter, absorption field, or at this stage of the sewage treatment process.

Pros of Aerobic Septic System

Aerobic septic systems offer advantages and disadvantages, as with every device or system. The advantages of aerobic septic systems are as follows.

1. Long-lasting

Compared to traditional septic systems, aerobic septic systems have a long lifespan. An aerobic septic system can typically survive up to 40 years with proper care.

Professional installation of your septic system is one of the main elements that affect how long it lasts. Regular upkeep, which includes yearly inspections and cleaning, is also very important for keeping the system working.

2. A Space-Friendly Design

The majority of conventional septic systems can take up a lot of room. Your tank size will increase as your family, and home grow.With ATUs(Aerobic Treatment Units), though, that isn't the case. These systems are made to occupy the least amount of room possible. They are, therefore, the best option for households that might not have a lot of extra room.

3. Better Care

Because of how these systems operate, the effluents discharged by aerobic septic systems are significantly cleaner than those released by anaerobic septic systems. It significantly lowers the possibility of groundwater contamination. Therefore, ATUs(Aerobic Treatment Units) are a fantastic option if you reside in a location with a high groundwater table, such as the shores of a lake.

4. More Ecologically Friendly

If you care about ecology, you should choose this sewage treatment system first. ATUs(Aerobic Treatment Units) are far more environmentally beneficial than other systems because water from your laundry, showers and other areas can be recycled by these systems and used for gardening.

Additionally, since this system cleans the wastewater effluents considerably more thoroughly, maintaining the drain field will cost you much less.

5. Functions More Quickly and Effectively

Residential solid wastes are broken down far more quickly by an aerobic septic system than an anaerobic one. As a result, there will be far less waste buildup than in a normal septic tank, so you won't need to pump your septic tank as frequently.

6. More Adaptable

On any land, aerobic septic systems can be used. A lot of acreages is necessary for anaerobic systems. These can function on small plots of land.

High water tables make it impossible for anaerobic processes to operate on the soil. On such land, aerobic septic systems perform well. An aerobic system may be essentially installed everywhere, although this cannot be stated for conventional septic systems.

Cons of Aerobic Septic System

There are restrictions to an aerobic system, and it might not be ideal for you. The following are some disadvantages of aerobic septic systems.

1. More Costly

ATUs(Aerobic Treatment Units) cost significantly more than standard systems, although the exact cost of an aerobic septic system varies based on the system design and installation location. The price may, in some situations, be greater than three times that of a typical sewage system.

2. Increased Maintenance Expenses

Additionally, maintaining aerobic septic systems is more expensive. Regular inspections and maintenance are required for both electrical and air injection systems. Additionally, you must maintain records of your upkeep. Repairs and replacements may be excessive if you don't follow these maintenance procedures.

3. Odor Possibility

Aerobic systems tend to release an unpleasant smell if they are not properly vented.


What purpose does an aerobic septic system serve if both systems are effective? Your location has a big impact. The risk of clogging your drain field increases if you reside in a region with a high water table because of the regular release of traditionally treated water. Water can also contaminate itself by mixing.

You run less of a danger of clogging the drainage area with aerobic septic systems since they cleanse water more effectively before discharging it from the tank.

It would help if you considered your demands as a homeowner, your location, and your budget. You may always speak with an expert if you're unsure of the septic system most suitable for your needs.

Pros and Cons of Aerobic Septic Systems

Frequently Asked Questions

What are an aerobic septic system's drawbacks?

A septic system is less expensive to operate. Electricity is needed. Consisting of susceptible mechanical components, a septic tank system requires more maintenance.

What kind of septic system is ideal?

The optimum septic system is a pressure-type system if your tank will be put in a gravelly or sandy location. A gravity system performs better in places with rich soil or dirt. These permit sewage streams that have not been cleaned to seep into the soil and fertilize the soil nearby.

How long does a septic system last?

20-30 years. A brand-new septic system will typically last 20 to 30 years. However, this sum is not set in stone. Some variables impact a septic system's lifespan. To begin with, well-built and maintained septic systems are durable.

What contributes most frequently to septic system failure?

Most septic system problems are caused by improper design or careless upkeep. Some soil-based systems (those with a drain field) are put in at locations with poor or inappropriate soils, too many slopes, or high groundwater tables.

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