As pressures on freshwater resources grow around the world and as new sources of supply become increasingly scarce, expensive, or politically controversial, efforts are underway to identify new ways of meeting water needs. Of special note are efforts to reduce water demand by increasing the efficiency of water use and to expand the usefulness of alternative sources of water previously considered unusable. Among these potential sources of supply are greywater reuse, desalination and rainwater harvesting. Of the three mentioned above, greywater reuse is less favoured and acceptable because of aesthetics and health considerations. Due to the low level of treatment (sedimentation, filtration and adsorption) to be applied to the greywater which invariably reduces the cost of treatment, the possible reuse options for the treated water are urinal and toilet flushing, irrigation of lawns (college campuses, athletic fields, cemeteries, parks and golf courses, domestic gardens), washing of vehicles and windows, fire protection, boiler feed water, concrete production, develop and preserve wetlands, infiltrate into the ground (for recharge of aquifers), agriculture and viticulture reuse.