A rainwater harvesting system comprises components of various stages- transporting rainwater through pipes or drains, filtration, and storage in tanks for reuse or recharge. The common components of a rainwater harvesting system involved in these stages are illustrated here.

Water is essential to life. We need water for quenching our thirst and keeping our body hydrated. We need water for our other daily activities. Plants and animals also need water to survive. In turn, we can have a supply of food. As we can see, water is indeed very important to us.

Rainwater Harvesting is also a technique that is the process of saving and collecting rainwater using various means of various resources (such as agriculture etc.) for future use. Rainwater can be collected in natural reservoirs or artificial tanks. Storage of roof water is also a way of collecting rainwater.