• Greywater – shower, bath, basins, washing machines, laundry troughs and the kitchen
  • Blackwater – toilet waste (water-flush, incineration or dry composting systems)
  • Sewage – combined greywater and blackwater

Any residential development on a site not serviced by a sewer system must rely on some form of onsite waste disposal. 

Performance and management requirements will vary depending on the source of the wastewater, the method of treatment and the effluent quality required for the end uses of the treated water.