The advantages of the rainwater harvesting system are listed below.

• Decreases the demand for water.
• Promotes both water and energy conservation.
• Improves the quality and quantity of groundwater.
• Does not require a filtration system for landscape irrigation.
• Easy to install and operate.
• It reduces soil erosion, stormwater runoff, flooding, and pollution of surface water with fertilizers, pesticides, metals and other sediments.

 Further Reading:

• Geography Notes
• Environment and Ecology Notes