Aerobic Septic System Parts Explained: Understanding the 5 Key Components That Keep Your System Running

List of Aerobic Septic System Parts

Here are the core components you’ll want to include in your post, in the logical order of wastewater treatment and flow:

Trash Tank (Pre-Treatment Chamber)

The first tank where household wastewater enters.
Solids settle at the bottom, and oils float to the top, preventing clogging downstream.

Aeration Chamber (Aerobic Treatment Unit / ATU)

This chamber uses an air pump or compressor to inject oxygen, helping aerobic bacteria break down organic waste faster and cleaner than in traditional septic systems.

Clarifier (Settling Chamber)

After aeration, water flows into the clarifier where remaining solids settle out.
Clarified, treated water (effluent) moves to the next stage for disinfection.

Disinfection Chamber (Chlorinator or Tablet Feeder)

Before wastewater is released, it passes through chlorine tablets or liquid bleach that kill any remaining bacteria.
This ensures the effluent meets TCEQ safety standards for surface disposal.

Pump Tank and Spray Distribution System

The treated water is stored in a final tank, then pumped to spray heads or drip irrigation lines for surface dispersal.
These spray zones must be kept clear and maintained to prevent runoff or odors.