A correctly-sized septic tank is an effective method of wastewater treatment where there is sufficient suitable land area available for disposal, where further treatment occurs within the soil in aerobic conditions (inside the tank the processes are anaerobic).
Septic tank
Benefits
- Proven technology with a wide range of suppliers
- Low or no power consumption
- Inexpensive
- Three-yearly pump-outs only
Drawbacks
- Council may be resistant, especially on smaller sections and the system relies upon the soil for completion of treatment
- Require sufficient land area and larger setbacks from ground and surface water
- Dependent on the (sustained) treatment capacity of the soil