Disposal of wastewater in rural and urban residential buildings is carried out continuously and automatically. With time, the seeds of fruits and/or vegetables that are washed and drained down sinks might cling on to surfaces and produce fruits such as tomatoes and grapes. This draws our attention to the possibility of regulating and optimizing the use of wastewater. In fact, such an approach has the potential to address a number of economical challenges at the household-level. This can be done by purifying wastewater using a treatment unit directly connected to residential buildings. The treated water can then be utilized in cultivating rooftops and walls of buildings with revenue-generating plants. The surplus can also be used in construction and industrial purposes. As such, this research represents a study aiming at applying the idea of recycling wastewater released from residential units in an effective manner that reduces fresh water consumption and relieves governmental authorities of part of their burden, particularly in view of the global water crisis.