Rainwater harvesting is a technique used for collecting, storing and using rainwater for landscape irrigation and other uses. The rainwater is collected from various hard surfaces such as rooftops and/or other manmade aboveground hard surfaces.
This component refers to your roof. This is an obvious component as you can't harvest rain water without a roof. This is the first point of contact for the rain fall. The volume of water you harvest will depend on the surface area of your roof.
A Conveyance system is a fancy word for downspouts and gutters. Without gutters you can't catch the water that falls on your roof. Including the right piping and gutters means the water will run off the roof and into your tank without collecting unneeded debris. The most common materials for gutters and downspouts are half-round PVC, vinyl, pipe, seamless aluminum, and galvanized steel. There are other necessary components you need to add to your downspout and gutters. This includes mount hardware, brackets, and straps to fasten the gutters and downspout to the fascia and the wall.
When the first lot of rain hits your roof and runs into your gutters, the water often contains a lot of pollutants from the air and debris on the roof. The first flush diverter is a popular system that includes a valve that ensures the runoff from the first spell of rain is flushed out and does not enter the system.
Having the right filtration system in place is critical. Especially if you are Harvesting potable water that you will be drinking or using for your laundry. A sophisticated filtering system is needed to ensure harmful contaminates are removed. Leaf screens are installed along the gutter, in the downspouts and at the entrance of the water storage tank.
This is a key component of your complete system. Your storage system may be above ground or below ground and include more than one tank. Some of the common materials used for rain harvesting tanks are poly, galvanized steel and concrete.
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