Energy n water powering the cities

can cities of the future be self sustainable.water cut for four days in selangor state causes severe disruption ti lives.water is used in factoriez to cool machineries,in public areas like toilets n hospitals n food preparation.in china shortage of energy cause widespread blackouts ,loss of productivity and in europe soaring gas prices may affect the heating n soaring transport cost. so aelf sustainable cities are the way to go in future