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The system can also include a first flush in order to clean the roof of unwanted accumulated debris, leaves, and bird excrement, without having to store it in you tank. This first flush allows the first ten to fifteen minutes of rain to pass your system without going into your storage tank. The remaining water goes to the tank, which in this case is made of ferro-cement. If the end use is drinking water, then some type of extra filter should be added.<ref name="Alabama" />At Pedregal they created a carbon filter, with alternating layers of sand and charcoal for the drinking water. The rest of the water is used for drip irrigation and aquaculture ponds. | The system can also include a first flush in order to clean the roof of unwanted accumulated debris, leaves, and bird excrement, without having to store it in you tank. This first flush allows the first ten to fifteen minutes of rain to pass your system without going into your storage tank. The remaining water goes to the tank, which in this case is made of ferro-cement. If the end use is drinking water, then some type of extra filter should be added.<ref name="Alabama" />At Pedregal they created a carbon filter, with alternating layers of sand and charcoal for the drinking water. The rest of the water is used for drip irrigation and aquaculture ponds. | ||
File:RainCatchment at Pedregal.jpg | |||
File:Raincatchmentfrom Behind.jpg | |||
''' Roof ''' | ''' Roof ''' |