They pump air through the system for septic. For a three-chambered septic unit in which air is introduced into the chamber that is the second. The second chamber will be filled as the first chamber fills. The process of decomposing partially broken waste accelerates when it comes close to the air. The process of decomposition can occur naturally, it is much faster when air is added. Chlorine from chlorinated tablets is additionally added to the mix in this stage. Once the waste is transformed into liquids, it moves to the third chamber in which a submersible motor remains. The pump is able to activate the waste before sending it out to be leached. It was then treated using bleach to ensure there was no contamination within the waste when it traveled across the area. A soil test may be needed at a site in order to determine whether an aerobic septic will require it. The clay content of the site and its depth will be the key factors in determining how to make a determination. An aerobic system might be required if the site could be prone to flooding due to excessive rain.