Roof catchment

• The roof of the house is used as the catchment for collecting rain water.
• The style construction and material of the roof effect its suitability as a catchment.
• Roofs made of corrugated iron sheet , asbestos sheet, Tiles or Concrete can be utilized for harvesting the rain water.

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Gutters

• Gutters are channels fixed to the edges of roof all around to collect & transport the rainwater from the roof. 
• Gutters can be made in semi-circular and rectangular shape with cement pipe, plain galvanized iron sheet, PVC pipes, bamboos etc.
• Use of locally available material reduce the overall cost of the system. 

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Down Pipe

• It is the pipe which carries the rainwater from the gutters to the filter & storage tank. 
• Down pipe is joined with the gutters at one end & the other end is connected to the filter unit of the storage tank. 
• PVC or GI pipe of 50mm to 75mm (2 to”) are commonly used for down pipe.
• Bamboo can be also used wherever available and possible.