Domestic wastewater treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes wastewater from kitchen, bathroom etc. Sewage can be dangerous for humans and environment, attribute to it containing large mount of bacteria, viruses and parasites ( including worms and protozoans). Thus it should be treated before discharged the resident domestic wastewater into the natural water bodies.
As people aware of environment protection and saving water resource, some community developed to reuse domestic wastewater as green plants water by residential wasterwater treatment system.