Rainwater collection systems were widely used before well drilling equipment and treated municipal water supplies became available. In many parts of the world, rainwater still provides the majority of the water needed to meet agricultural requirements and, in some cases, potable water as well.

Most rainwater collection systems are designed to capture rainwater from the roofs of buildings. The water is then transported through gutters and other pipes into cisterns or tanks, where it is stored until needed. The water collected can be used for irrigation, laundry, hygiene, or even potable water, depending upon the materials used and the treatment undertaken by the homeowner.Rain Water Collection

A typical rainwater collection system consists of the following:

  • A collection area (usually the roof)
  • A method of conveying the water (gutters, downspouts, and piping)
  • A filtering device
  • A storage tank or cistern
  • A system to distribute the water as needed