Basically, septic systems are self-contained and efficient wastewater treatment systems. When compared to the centralized sewer system usually spaced apart, these systems have been found to be more economical as wastewater is treated and disposed onsite. However, Septic systems Queensland, are usually cheaper to establish and maintain since they are simple in design. Again, they do not disrupt the environment because they are located within the homestead and do not require installing the pipes to connect to a public sewer.