Domestic Roof Water Harvesting: Applications

‘Rainwater harvesting’ is a term which covers all those techniques in which the rain water is collected and stored for general use. Roof water harvesting is a subset of this. This term is used for those arrangements that cause rainfall to soak into the ground rather than run off the ground’s surface. Read on to know more about the applications of roof water harvesting.

Also, small reservoirs are constructed to collect run-off water so that it can be used for micro-irrigation and cattle. Even this run-off water is collected from impermeable surfaces and from roofs. Hence,

domestic roof water harvesting (DRWH)

is a part of rainwater harvesting which has its own importance.

Applications of Roof Water Harvesting

Increasing water use and improving user convenience

One of the most obvious role of RWH is to minimize the dread of carrying water. Hence, RWH system should be installed in homes

more than 500 meters

from a clean point source. Otherwise, it should be located somewhere uphill from the point source. This system not only minimizes the fetching time but also increases the water quality and water consumption, especially in rural areas.

Compensating for low water quality at existing point sources

In some geographical locations, there is no inexpensive way of providing safe water. This is due to factors like unsuitable water conditions or polluted surface waters. Sometimes surface waters are completely absent. In these kind of adverse situations, RHW is an best alternative for potable water. It is much safer to than using raw ground water.

Improving the water supply to specific homes

One drawback of RWH system is that is only applied to richer rural homes as these systems are applied to one household at a time. These system face a fierce competition with other services like water carriers. Now, there is a need for the application of RWH in those targeted households where the residents face a problem in water fetching.

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