What role do bacteria play in a septic system?

Bacteria play a crucial role in a septic system by breaking down waste materials. When wastewater enters the septic tank, bacteria begin the digestion process. These microorganisms break down organic matter present in the waste, transforming it into simpler substances. This biological decomposition reduces the volume of solid waste and helps in the proper functioning of the system.

Without the activity of bacteria, the septic system would not be able to efficiently manage and treat the waste, leading to potential system failure and overflow. The breakdown of harmful pathogens and other pollutants is also facilitated by bacterial action, making them essential for maintaining the overall health of the septic system.

Other options do not accurately represent the vital function of bacteria in wastewater treatment. While bacteria do contribute to odors in some cases, their primary role is to aid in waste breakdown, emphasizing the importance of their presence in the system.