Aerated Water Treatment System

Our waste water treatment systems will efficiently recycle all of your waste water, so that you can use it twice, saving money and helping the environment.

We have been delivering high-quality Aerated Water Treatment System’s (AWTS) to happy customers for many years, from suburban homes to large businesses and factories.

Our most popular system is our single tank solid concrete tank which, with a capacity of 10,000 litres per day, is the ideal household sewage treatment system. Of course, should you need something larger for your property, we can manufacture exactly what you need.

We can also tailor a more adequate sized system for larger premises such as hotels and offices.

Our systems are made of reinforced concrete and don’t contain any plastic components, making them ideal for bush fire prone areas. We  ensure that all our systems are extremely energy efficient. As an example, the blowers only use on average 43 watts of energy.

With an ECO-SEPTIC AWTS, you can enjoy an environmentally friendly solution to your waste water problems, saving energy and reducing your household bills  at the same time.

Aerated Wastewater Treatment Systems (AWTS)

ECO-SEPTIC offers modern Aerated Wastewater Treatment Systems to process your wastewater and convert it to an odourless and clear water that you can use a second time. 

We have been a popular supplier of this treatment system for many years. We have a wide range of customers, including residents and owners of large businesses, complex buildings and structures, industrial and agricultural regions.

Our preferred system is a concrete tank which has a capacity of up to 7,000 litres per day. This size is ideal for a household, but of course we can manufacture tanks of various sizes depending on the number of people utilising the water. 

We also have supplied and installed AWTS to many large premises such as hotels, medical care facilities and to many other industries.

What is AWTS?

In areas that do not have access to direct sewer lines, the proper utilisation and treatment of wastewater is essential. This is for preservation of public health and the surrounding environment.  To is how the AWTS was developed.

Aerated Wastewater Treatment System, or AWTS, is a system of treating water for the purpose of improving the quality of wastewater to make it suitable for second use such as irrigation, garden and lawns, industrial water supply, including being discharged to the environment without harming it.

The liquid waste may originate from a single household or several residences or complex offices and result from use of water from sinks, baths, laundry, showers, toilets, and the like. These sewage and grey water flow directly to the AWTS tank, which we usually install underground, so the only parts visible are the lid and the control panel.

Compared to a septic tank, the Aerated Wastewater Treatment System by ECO-SEPTIC removes more solid matters. Thus, it is not likely that you will experience clogging problems within the disposal system. Also, the additional treatment which is done in the second or aeration chamber results in the effluent with small number of harmful bugs, so it doesn’t do damage to the environment.


At ECO-SEPTIC, we offer modern aerated wastewater treatment systems (AWTS) to perform superior wastewater processing. These are an environmentally-friendly alternative to septic tanks where waste is digested by naturally-occurring bacteria.

Read on to find out how AWTS could work for you

How Does AWTS Work?

AWTS has a series of treatment chambers integrated with an irrigation system. Wastewater from a household or commercial establishment is treated in several steps in various chambers or sections of the tank that process the liquid waste in various ways.

  1. The first section is like that of a regular concrete septic tank. The liquid waste flows into the first chamber where solid substances settle to the bottom leaving the liquid at the top. The solids form a sludge layer there at the bottom of the tank.
  1. Scum or a layer of dirt or froth collects at the top, and the wastewater that has been partially clarified flows into the second chamber. Here, the water is mixed with air to help bacteria in treating it further. This is called the aeration process. The aerobic bacteria (requires oxygen to live) degrades the solids further and lessens the number of harmful bugs within the partially cleared water. This is made possible by pumping air directly into the effluent.
  2. A third chamber is for additional clarification, as the solids are returned to either the septic chamber or the aeration chamber for further treatment before irrigation can happen.

Note:  Bacteria in the first chamber breaks down the solid substances in the scum and sludge layer. If there are solids that cannot be completely broken down, they build up in the chamber and must be subjected to a periodical pump out.

In the second chamber, air is added to the wastewater to promote microbial growth and allow aerobic degradation of the pollutants.  Aeration is a fundamental part of the biological water treatment system in which microorganisms are used to break down the contaminants.  In industrial and commercial wastewater treatments, aeration is what is referred to as the secondary treatment.

ECO-SEPTIC has a well-designed aeration system and it is proven to deliver quality wastewater treatments from our processes. An evenly distributed oxygen supply in our system is the cause of an economically viable and effective treatment plant.

Water Treatment System
Sewage Treatment Plant

Benefits of Aerated Wastewater Treatment System




When you choose an AWTS as a solution to treat your liquid waste, you get several benefits.

First, the ECO-SEPTIC AWTS is economically and environmentally friendly.

Second, with AWTS, you can pay for your water bills once and use the water twice.

How you ask?  By converting all your liquid waste into colourless and odourless water to be used in watering your garden. Your lawns and plantation will become greener and your crop yield will increase.

Finally, and the most significant advantage of AWTS, is that it uses natural processes in purifying the liquid waste so that it can be used again according to purpose.

If you would like to upgrade or replace your existing system with ECO-SEPTIC AWTS, contact us today.

Maintaining the Aerated Wastewater Treatment System

While a AWTS provides significant advantages, some things should be remembered in relation to maintenance. It is important to ascertain that your system works properly and to avoid issues, breakdowns and blockages.

As in other household systems, all septic plants require periodic wastewater treatment maintenance. The service includes regular checks on all the elements of the system and pumping out of the tank every few years. AWTS are more complex than a concrete septic tank. It is a requirement by the Health Department and local councils that all components of the treatment plant be inspected on a quarterly basis to maintain its integrity. This means that the homeowner or business manager will have to schedule an appointment with the service team at ECO-SEPTIC for servicing every three months. 

ECO-SEPTIC will arrange a date and time of the service  when you book your maintenance call. If problems with your AWTS are encountered before the scheduled date, don’t worry, we have available technicians on hand to help fix the problem and provide advice. After the servicing, we will monitor the quality of the treated water to ensure it passes requirements set out by the Health authorities. Our service agents are based right across the country to service all areas on the east coast of Australia.

When maintained properly, your Aerated Wastewater Treatment System by ECO-SEPTIC will serve you for many years to come. Contact us to schedule a maintenance service for your AWTS.

Call one of our specialists for a quick quote

wastewater treatment system

How does it Work

Once your wastewater reaches the system, it goes through a series of tanks which process it in different ways. The first reservoir works like a traditional septic tank where solids settle to the bottom to leave wastewater on the top. This product then flows into a second compartment where the aeration treatment takes place. Using a controlled, natural process, aerobic and anaerobic bacteria digest waste, purifying the water and leaving it odourless, colourless and ready to be recycled.

Recycle Symbol

Reuse and Recycle

The most significant advantage of an aerated wastewater treatment system is that it relies on natural processes to purify the water, so that it can be reused for irrigation. Clean water can be pumped out through garden drippers , sprinklers or directed through sub-surface lawn irrigation systems.

wastewater management

AWTS Maintenace

Aerated Wastewater Treatment Systems are complex so they require regular maintenance to make sure your system is operating to the highest possible standard. The water purity will need to be monitored to make sure it meets Health Authority requirements, but in the long run this water recycling system is a cost-effective waste management solution.