Many homes across Florida use Aerobic Treatment Units (ATUs) instead of traditional septic systems. These advanced wastewater systems treat sewage more thoroughly before it enters the drainfield, making them especially useful in areas with high water tables or limited soil absorption.
At Rob’s Septic Tanks, Inc., we install, service, and maintain aerobic septic systems throughout Central Florida. Understanding how these systems work helps homeowners keep them operating safely and efficiently.
What Is an Aerobic Treatment Unit (ATU)?
An aerobic septic system works similarly to a small wastewater treatment plant. Instead of relying only on natural bacteria in the tank, an ATU introduces oxygen to speed up the breakdown of waste.
This oxygen allows aerobic bacteria to process wastewater more effectively.
Key benefits include:
✅ Cleaner treated wastewater
✅ Reduced environmental impact
✅ Better performance in difficult soil conditions
✅ Improved drainfield protection
Because the wastewater is treated more thoroughly, aerobic systems are often required in areas where traditional septic systems struggle.
How an Aerobic Septic System Works
An ATU typically processes wastewater in several stages.
Primary Treatment
Wastewater first enters a pretreatment chamber where solids settle and begin breaking down.
Aeration Stage
Air is pumped into the system using an aerator or blower. Oxygen allows aerobic bacteria to rapidly digest organic waste.
Clarification
Remaining solids settle out before the treated water moves forward.
Disinfection
Many ATU systems use chlorine or another disinfectant to eliminate harmful bacteria.
Final Dispersal
The treated water is released into the drainfield or spray field where it safely enters the soil.
Why Aerobic Systems Are Common in Florida
Florida soil and groundwater conditions often require advanced treatment systems.
These systems are commonly used because:
✅ High water tables reduce natural soil filtration
✅ Sandy soils drain quickly
✅ Many properties have limited space for traditional drainfields
✅ Environmental protection regulations are strict in certain areas
Aerobic systems help ensure wastewater is treated properly before reaching groundwater.
The Importance of ATU Maintenance
Unlike traditional septic tanks, aerobic systems contain mechanical components that must be maintained regularly.
Proper maintenance includes:
✅ Inspecting the aerator and air pump
✅ Cleaning filters and components
✅ Checking alarms and control panels
✅ Monitoring disinfection systems
✅ Pumping the tank when needed
Ignoring maintenance can lead to system failure or regulatory issues.
Common Signs of ATU Problems
Homeowners should watch for early warning signs.
These include:
✅ Alarm lights or warning signals
✅ Sewage odors near the system
✅ Slow drains inside the home
✅ Wet areas around the drainfield
✅ Unusual mechanical noises
Any of these symptoms should be inspected quickly.
ATU Systems Serviced in Central Florida
Rob’s Septic Tanks, Inc. services and maintains several major aerobic treatment systems, including:
✅ Fuji Clean
✅ AquaKlear
✅ BioMicrobics FAST systems
✅ Jet aerobic systems
Our technicians are experienced with the maintenance requirements for these advanced wastewater systems.
Professional ATU Service Since 1981
Aerobic septic systems are highly effective when maintained properly. Regular inspections and servicing help protect both your home and the environment.
With over 40 years of experience, Rob’s Septic Tanks, Inc. provides aerobic system service, septic pumping, inspections, repairs, and drainfield work across Clermont, Minneola, Groveland, Winter Garden, Ocoee, Tavares, Apopka, Leesburg, Mount Dora, and surrounding Central Florida communities.
📞 Call (352) 394-3114 to schedule professional ATU maintenance or septic system service.
Frequently Asked Questions
What is the difference between an aerobic and traditional septic system?
Traditional septic systems rely on anaerobic bacteria to break down waste, while aerobic systems introduce oxygen to accelerate treatment and produce cleaner wastewater.
How often should an aerobic septic system be serviced?
Most aerobic systems require inspections every 3–6 months and regular maintenance to ensure mechanical components are functioning properly.
Are aerobic septic systems more expensive to maintain?
They can require more frequent maintenance because of mechanical components, but they also provide improved wastewater treatment and environmental protection.
What happens if an aerobic septic system stops working?
If the aerator or other components fail, wastewater treatment may stop, which can lead to odors, backups, or system alarms that require immediate service.