Roof Water Harvesting

Doesn t that sound like a lot of water that you could harvest and use for free.

Roof water harvesting.

Well we thought so too. Roof based rainwater harvesting refers to collecting rainwater runoff from roof surfaces which usually provides a much cleaner source of water that can be also used for drinking. There s just a short list of rooftop surfaces that rainwater harvesters should avoid. Be aware that some planned residential communities counties or cities may have ordinances prohibting rain water harvesting.

Traditionally this involves harvesting the rain from a roof. Harvested rain water can be stored in subsurface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks. Tin tin is one of the best rainwater harvesting roof materials to have on a project. Greenhouse roof has the highest collection efficiency most surfaces are a ok.

Asphalt shingles many shingles work with rainwater harvesting. Specifically this is set up for my rainwater garden area but c. The good news is most roofing materials are suitable for rainwater harvesting. Rather than let this precious water run away we have plumbed the tank overflow pipe and brazilian ball pre filter to empty into a rain garden down the slope.

While metal roofing or plastic sheeting e g. There is very little water loss with tin around 5 and no worries of contaminants leaching out from the tin with an approved nsf 61 coating. Harvesting roof water is legal in all us states according to state governments except colorado where only some people are allowed to collect rain water that runs off of their roof. Rooftop rain water harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs.

Building a rain roof as another option to harvest rainwater for home garden or livestock use. The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel. Roof water harvesting systems need to be designed to handle overflow when the tank gets full. A rain garden in this case is an excavated depression with a downhill berm.

Rainwater collection systems can be as simple as collecting rain in a rain barrel or as elaborate as harvesting rainwater into large cisterns to supply your entire household demand.