Green Roof Water Collection

Green roofs can be effective in both urban and rural areas as a solution to managing rainwater drainage.

Green roof water collection.

Green roofs vegetated roofing roof gardens rain gardens bioretention rainwater collection rain water harvesting. By using green roofs as rainwater capture areas the amount of collected water for reuse will be reduced already due to the absorbed amount of water in the system itself. Vegetation and soil act as a sponge absorbing and filtering water that would normally plunge down gutters wash through polluted streets and over tax sewer systems. Green roofs mitigate water runoff and sewer overflows.

Excess water drips from the roof gradually so drains are not overwhelmed by a sudden deluge. Rainwater can carry bacteria parasites viruses and chemicals that could make you sick and it has been linked to disease outbreaks 3 4. Rain can wash different types of contaminants into the water you collect for example bird poop on your roof could end up in your water barrel or tank. Many studies in europe and north america have shown that green roofs can improve the water quality of the stormwater that leaves a roof with vegetation and substrates on it.

Up to 75 of rainfall is absorbed by an extensive living roof and up to 90 is absorbed by an intensive green roof system. Pollutants within the atmosphere and from roofs can cause run off from roofs to have poor water quality. A green roof s plants remove air particulates produce oxygen and provide shade.