In arid and semi-arid regions where water is in short supply, greywater treatment offers the possibility of supplemental water resources for reuse in irrigation at household and farm levels. The greatest environmental challenge that Jordan faces today is water scarcity. Jordan has one of the lowest per capita levels of water resources in the world. In this work, an overview of the types and characteristics of household greywater was made. An experimental pilot plant for greywater treatment was constructed at a residential house in Al-Faysaliya village five kilometers east of Madaba city in Jordan. Household greywater (from showers, sinks, washing machines, and dishwashing machines) Was separated from black water (from the toilet) and collected in a separate pipe system. The collected greywater was subjected to processes of filtration, sedimentation, aeration, and pumping into an irrigation system to irrigate many olive trees in the house garden. Samples of untreated and treated grey water have been taken and analyzed for chemical and biochemical parameters. The quantity of freshwater consumption and greywater generation has been recorded. Analysis of available experimental data has been done. Results of analysis and calculations showed that the treatment and reuse of household greywater lead to reducing the use of fresh water, saving drinking water, less strain on septic tanks, enhancing plant growth, and reclamation of nutrients.