What Is an Aerobic Septic System? How It Works, Pros and Cons
Updated October 2026. Checked against U.S. EPA, Texas A&M AgriLife Extension and Texas Commission on Environmental Quality guidance. An aerobic septic system, also called an aerobic treatment unit (ATU), pumps air into the tank so oxygen-using bacteria can treat wastewater more completely than a conventional septic tank. The EPA describes ATUs as using many of … Read more