water conservation

Its much hyped topic.i dont know why we dont try simple tricks to save water.we in mumbai use air conditioners for at least 5-6 hours a day/night.how much water is released,nobody bothers to collect the water which is released can it not be channelised?pipe leakages are not fixed timely.there are no insulated pipes which would tend to prevent both evepouration and wear and tear of pipes.its time we get our act together.is a option but then it also causes the level of water to rise.why cant we have a resorviors at common places such as gardens which can store rain water which can be utilisd later.we have many options but too little time to think about them
surel shah