This study was performed to look at the types of desalination that are used and find out which would be the best for city and rural use. This could help make sure that new desalination plants would be using the best possible technique. The criteria were the quality of water produced, the quantity of water per day, the energy needed, the supplies, and the environmental impact that it has. The results were that Reverse-Osmosis came first for city, with Electrodialysis second, Vapour-Compression third, Multiple-Stage-Flash fourth, and Multiple-Effect-Evaporators fifth. For rural desalination, the Double-Basin-Solar-Still came first, Small-Scale-Electrodialysis second, and Small-Scale-Reverse-Osmosis third.