Mumbai receives its annual drinking supply of water from its lakes Vihar,Vaitarna and Tansa lakes which are replenished with water between June and September by the annual monsoon rains which could measure upto 2,200 millimetres (86.6 in)Various densely populated parts receive water supply by pumping from these lakes. However many are located at the very end of the pipeline and get inadequate water.
With ever increasing population I foresee the water supply to be insufficient in the coming years.With erratic rainfall measuring upto 37.7 inches in one day on 26 July 2005 to late monsoons lasting upto October due to the effects of global warming I propose an innovative Water Regulator and Harvesting Design which has to make use of the abundant monsoon rain.
The basic idea would be to collect the rain water falling on roof tops and the sides of building. A portion of this can be saved in innovative Tanks for immediate consumption. If rain water is not collected, almost 60-80% runs off through storm drains and sewage and the remaining would evaporate.
The amount of average water a household consumes can be regulated by a SMART WATER GRID Designed to measure and regulate the amount of water entering every household. Every household would be connected to an intranet –internet system. If the water supply would exceed the household average notifications via sms, emails and control beeps, users would be asked to regulate their water supply. This together with a rain water harvesting system should be a backup for shortfall of any rain.
My idea would be deepen the tank by double its capacity. Get the regular flow of water from the city and then harvest the rain-water during the monsoons as a backup for the summer months when there is acute water shortage also as an investment for the future.
So my basic Innovative Rainwater Prototype/Pilot Design would be as follows:
1. There have to be drain pipes bringing the water from the roof of either wings of the building and letting it run off. Then close these pipes at the ground level and connected them to a huge catchment/collection point. 2. From this huge catchment/ common collection point, install a 6-8" dia pipe underground to the large water tank. 3. Deepen the tank and increase its capacity by double,the rain water harvested would replenish the ground water and the well which is deep dug in a suitable area by the water-table mark. 4.Have a state of the art purifying system/filter installed that would remove the impurities from the collected rainwater and make it available for daily consumption.
Innovation here is of the design concept and the benefit it would provide to all residents. Plus the conduits and cables would be made of cost effective polyvinyl chloride (PVC) or galvanized iron (GI).
The Smart Water Grid would regulate water supply, constantly show status on the Internet and also measure Impurities/Irregularities if any in the water supply.Such a network could regulate the entire city water supply.
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