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Harvesting of water acts like a Recurring-Deposit scheme. Foto la & lb show schematic lay-out diagrams of rain water harvesting for multi-storey building. When roof water is diverted to underground water, it dilutes favorably the salinity of water. It also prevents water-logging in big towns. Such schemes are essential to maintain the water-table. The off-take potential of the borings/deep borings would improve, i.e. The borings can thus become permanent and sustainable source of water-supply (Ref1).
Such programs should be implemented 100% with all seriousness within a time-period of say 2 years in each and every town. Many people are still not aware about this system or its technical details. Every builder, engineer and construction worker should be trained in the proper construction methods. NGOs can provide free training & consultation in this area to give momentum to this activity. Governments and NGOs give subsidy for constructing water harvesting structures. Research should be undertaken to improve its efficiency and to reduce its
cost.
b) Optimum Utilization of water
b1) In Households:
i)
Following tips will help the householder to reduce his consumption. Do not resort to washing in flowing-water, wherever possible e.g., washing of utensils, taking bath, brushing teeth or shaving. All these operations can be done either with water stored in a bucket or mug or with intermittent water flow or with a reduced size of water tap.
ii)
If one cannot change the normal 1⁄2 or 4" tap-size to 3/8" tapsize, train the house-members to do the above operations, not with taps fully opened, but with taps just opened half or so. A slow moving water jet or/and low pressure jet may require a few seconds more time for doing any of the above noted activities, but will eliminate a lot of wastage in water consumption. Each and every school should inculcate this habit in the children, by practicing it in schools, and by arranging competitions and imparting proper training.
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