Rainwater harvesting is defined as a process for collecting and storing rainwater from rooftops, the land surface or rock catchments using simple techniques such as jars and pots as well as more complex techniques such as an above ground potable water tank. Techniques usually found in Asia and Africa arise from practices employed by ancient civilizations within these regions, and they still serve as a major source of drinking water supply in rural areas.
Rainwater harvesting processes can be broadly characterized into two categories called roof-based harvesting and land-based harvesting. Collection devices for a land-based harvesting process refers to ponds, reservoirs, and underground tanks, or even perhaps, a basin with a pump station to collect with and then pump to an above ground tank. Whereas, roof-based harvesting process refer to roof surfaces conveyed directly to a container.
Some of the most popular types of holding containers range from bolted steel tanks, usually with a potable liner inside; a water bladder or to a much smaller rain barrel. You can even use a natural solution such as a pond or lake to hold the rainwater collected.The global rainwater harvesting market is not highly diversified because of the presence of a limited number of accredited designers and suppliers.
Collected and stored rainwater is used for a vast array of agricultural, commercial and domestic purposes. Water harvested by this process can be used to enhance the natural groundwater supply using artificial conveyances like infiltration ponds, trenches and dams.
The market is characterized by the presence of well-diversified international, regional, and local vendors that operate in developed and developing countries. These vendors typically sell many products that are manufactured by a few highly experienced companies, and are knowledgeable in their relative fields of filtration products, tank components, pump stations, and disinfection products like UV systems.
In the coming years, rainwater harvesting will play a key role in the growth of the world as urbanization and sprawl of heavily densified communal areas continue, especially in the areas where even modern infrastructure has not been amended.