Rainwater harvesting involves the accumulation of surface rain water for use later. The water that gathers and stands in hollows of unpaved areas and roof tops during the rainy season is sourced with the help of pipes or furrows and channelized into a storage tank or barrel that filters the water on its way in and out, when it is being sourced to the desired faucet. The accumulating and storing of rainwater is widely referred to as rain water harvesting and there are a number of designs available in the market to apply the technique. The rain water harvesting techniques address domestic, agricultural and industrial requirements.
The systems for each are the same in functionality, but differ on the basis of tank capacity, installation – underground or above, and extent of use. The rain water harvesting techniques require only a limited amount of knowledge to set up, but the engineering requirements have to be thoroughly understood by the home or industrial unit owner. The storage and piping and the special pressuring equipment that need to be installed are part of all rain water harvesting systems. The tanks, barrels, cisterns and butts are fitted with water purifying equipment. Even if the water sourced form a rain water harvesting system is not very suitable for consumption, the water sufficiently meets the needs of laundry, washing and cleaning, both in domestic and industrial units.
Some techniques, depending on local conditions, have UV lights fitted within to purify the collected water prior to it being routed to the faucet. Another rain water harvesting technique uses a pressured water collection system, where the surface rain water is sourced from roof tops and other elevated surfaces. Today, societies all over the world are addressing rain water harvesting techniques available in local markets and the concept is especially important to communities and agricultural requirements in dry, arid areas. The volume of storage possible in any rain water harvesting system largely depends on the amount of average annual rainfall received in the region and the extent and purpose of use that the stored water is expected to be put to.
The rain water harvesting techniques and designs can be customized according to home brewed plans, design preference and the materials used to manufacture the rain water collection container. The rain water collection systems are being marketed by manufacturers and retailers who offer 24×7 access to the various designs available and customizable and service support. The surface rain water can be harvested within any terrain and put to use at a later stage.
The systems are a one time investment and offer real value for money every time the stored water from within the tank is sourced in summer. The systems also give you a chance to be a part of this global endeavor that can enhance the lifestyles of remote communities across the world. The rain water harvesting systems are inspected for compliance to and approved according to the rules and regulations laid down by local authorities and the state government.
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