Rainwater harvesting

• The process of collecting and storing rainwater from roofs or a surface catchment is called rainwater harvesting.
• Storing rainwater that collects on roofs instead of letting it go down the drain.
• This technique is known as rooftop rainwater harvesting.

Rooftop rainwater harvesting

• This involves collecting rainwater from rooftops in dugout ponds, vessels, or underground tanks to store water for long periods.
• The water is collected and transported via ducts, pipes, or gutters.
• It is then filtered through a mosquito screen into a large barrel.
• This is because seeped rainwater may contain bird faeces, chemicals, and other pollutants, which need to be removed and treated before use.
• Normally, this treated water is used to water a garden or for cleaning purposes.