06/03/2026
An ATU (Aerobic Treatment Unit) is essentially a mini wastewater treatment plant in your own backyard.
Unlike a conventional septic system, an ATU uses oxygen and beneficial bacteria to clean wastewater to a much higher level before it’s dispersed.
Because the water is treated more thoroughly, it can often be used for irrigation or discharged into approved waterways, depending on local regulations and system design.
They’re a great option for properties where a conventional septic system isn’t the best fit.