Alternative Septic Management: Leading the Way in Aerobic Treatment Units

Written by

Upgrading Your Septic System: When and Why To Consider an ATU

Monroe, United States – July 17, 2025 / Alternative Septic Management /

Alternative Septic Management works with Georgia homeowners every day to improve the performance and longevity of their on-site wastewater systems. Traditional septic systems may be sufficient in many cases, but for properties with unique environmental conditions or increased wastewater demands, upgrading to an Aerobic Treatment Unit (ATU) can offer major advantages. Keep reading to learn about when and why an ATU may be the best solution, how it works, and how it can benefit both your property and the environment.

Understanding Aerobic Treatment Units

An Aerobic Treatment Unit, or ATU, is a type of advanced septic system that uses oxygen to enhance the breakdown of organic waste. While traditional septic systems rely on anaerobic bacteria to digest waste in low-oxygen conditions, ATUs create a high-oxygen environment that supports aerobic bacteria, which are more efficient at breaking down waste materials.

This process results in cleaner effluent, reduced odors, and greater protection of surrounding soil and groundwater. The treatment stages typically include a pretreatment tank to separate solids, followed by an aeration chamber where air is introduced to support aerobic bacteria. After that, the water flows into a clarification chamber, allowing any remaining solids to settle. Some systems may also include optional disinfection before the effluent is released into the soil.

ATUs are especially beneficial in areas with poor soil percolation, shallow groundwater, or limited space for traditional drain fields.

Signs It’s Time To Upgrade

Several indicators can help determine whether an upgrade to an ATU is the right move for your property.

Persistent Septic System Issues

If you notice ongoing problems such as slow drains, backups, or surface pooling near the drain field, your existing system may not be functioning effectively. These symptoms often point to a failing drain field or an overburdened tank, both of which could be resolved with a more advanced treatment system.

Changes in Property Use

If you’re adding more bedrooms, installing a second kitchen, or expanding your home in any way that increases wastewater output, your current septic system may not be able to keep up. An ATU can handle greater capacity and reduce the strain on your system, making it a practical choice during property upgrades.

Environmental Considerations

Living near lakes, streams, or wetlands may place your property in a high-sensitivity zone. In these cases, Georgia regulations may require enhanced treatment systems to protect water quality. An ATU can meet those requirements while also reducing environmental impact.

Local Soil or Site Conditions

Clay-heavy soils or areas with high water tables reduce the soil’s natural ability to treat wastewater. An ATU can treat the water more thoroughly before it’s released, helping to avoid soil saturation and groundwater contamination.

Benefits of Installing an ATU

Upgrading to an ATU offers more than just regulatory compliance. It can significantly enhance the performance, lifespan, and reliability of your system.

Improved Wastewater Treatment

Aerobic bacteria are more efficient than anaerobic bacteria, meaning an ATU produces clearer, cleaner effluent. This reduces the likelihood of soil clogging and lowers the need for costly repairs to drain fields. The higher-quality effluent also minimizes the spread of pathogens and nutrient pollution.

Greater System Longevity

Because ATUs process waste more completely, they reduce the buildup of solids and strain on the drain field. This enhanced efficiency helps extend the life of the entire septic system, offering long-term value.

Smaller Drain Field Requirements

ATUs are often used where land is limited, as the more effective treatment process means a smaller absorption area is needed. This makes them an ideal choice for urban lots, sloped properties, or locations where landscaping space is a concern.

Environmental Protection

High-quality effluent produced by ATUs helps prevent nutrient pollution, reduces the spread of pathogens, and is less likely to impact groundwater or surface water. This is a key benefit in protecting ecosystems and meeting public health standards.

Potential Property Value Increase

An upgraded septic system can improve property value by demonstrating environmental responsibility and offering a long-term solution for wastewater treatment. For prospective buyers, a well-maintained ATU system can be a strong selling point.

Maintenance Considerations

It’s important to understand that while ATUs offer better performance, they do come with maintenance responsibilities. Unlike traditional systems that can go years between service visits, ATUs require regular inspections—typically every six months—to ensure all components are functioning properly.

Filters and other system parts need occasional cleaning to maintain efficiency, and the tank may still need periodic pumping. Since ATUs rely on powered aeration systems, they also require a reliable source of electricity. Without it, the aerobic treatment process will not function correctly.

At Alternative Septic Management, they offer comprehensive maintenance plans to keep your ATU operating efficiently and to prevent small issues from turning into expensive repairs.

Choosing the Right Time To Upgrade

Deciding when to upgrade to a septic tank alternative depends on your current system’s condition, your future property plans, and your local environmental factors. Homeowners often choose to upgrade when replacing a failed or aging septic system that no longer meets their household’s needs.

A renovation or home addition that increases water usage is also a common trigger for system evaluation. In some cases, health departments or zoning changes may require the installation of an advanced system like an ATU. Property transfers or preparing a home for sale can also be a good opportunity to improve wastewater infrastructure.

They can help you assess your property, perform a site evaluation, and determine whether an ATU is the best solution for your needs.

How Alternative Septic Management Can Help

At Alternative Septic Management, they specialize in the design, installation, and long-term care of aerobic treatment systems throughout Georgia. Their team is trained in the latest ATU technologies and stays up to date with all state and local regulations.

They begin by evaluating your site and soil conditions to ensure suitability for an ATU. From there, they design a system that meets both your household needs and environmental guidelines. They coordinate permitting, manage the installation, and commission the system so it’s ready for long-term use. After installation, they remain your maintenance partner, offering inspections, service calls, and expert troubleshooting.

Trust Alternative Septic Management for Your ATU Upgrade

Whether your current septic system is underperforming or you’re planning ahead for the future, an aerobic treatment unit can offer a smart, reliable, and environmentally conscious solution. At Alternative Septic Management, they’re proud to help Georgia homeowners upgrade their systems with confidence and ease.

Contact them today at (404) 788-3474 or visit their website to schedule a consultation and learn more about whether an ATU is the right choice for your property.