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The diagram illustrates the number of stages that required to produce water treatment. Overall, the process of water treatment is a totally man-made , including 10 different phases, which starts with water intake from natural sources and finishes with faucet to households. The process begins when raw water is gathered naturally, which it passes pumps through intake screens. The next stage, water arrives flash mix to mixed polyaluminium chloride and oxidants it and subsequently send settling basin before flocculated into special tanks. During the subsequent phases, chlorine is introduced into water that passes through membrane filter to remove the remaining impurities. Next, water is disinfected with adding chlorine, lime or (sodium hydroxide), fluoride. Finally, clean water pass out through pump and delivered to households.