Why rain water harvesting is future to survive

Rainwater harvesting is the process of collecting, storing, and using rainwater for various purposes such as irrigation, household use, and groundwater recharge. It is a sustainable practice that helps in conserving water, reducing water bills, and managing stormwater.

Installation of Rainwater Harvesting Systems

  • 1. Assessing the Site:

    • Roof Area: Calculate the potential catchment area by measuring the roof. The larger the roof, the more rainwater can be harvested.
    • Rainfall Data: Understand the local rainfall patterns to estimate the volume of water that can be harvested.
    • Storage Capacity: Determine the size of the storage tank based on the roof area and rainfall data.

2. Components of a Rainwater Harvesting System:

    • Catchment Area: Usually a rooftop where rainwater is collected.
    • Gutters and Downspouts: Channels to direct the rainwater from the roof to the storage tank.
    • First Flush Diverter: A device to divert the initial flow of dirty water away from the storage tank.
    • Storage Tank: A container to store the harvested rainwater. It can be above ground or underground.
    • Filtration System: Filters to remove debris and contaminants before the water enters the storage tank.
    • Distribution System: Pipes and pumps to convey the stored water to where it is needed.

3. Installation Steps:

    • Prepare the Catchment Area: Ensure the roof is clean and free of contaminants.
    • Install Gutters and Downspouts: Attach gutters along the roof edges and connect downspouts to guide water to the tank.
    • Set Up First Flush Diverter: Install the diverter to separate the initial runoff from the cleaner water.
    • Position the Storage Tank: Place the tank in a suitable location, considering space and accessibility.
    • Install Filtration: Set up filters at appropriate points to ensure clean water storage.
    • Connect Distribution System: Lay out pipes and pumps for distributing water to the desired usage points.

Benefits of Rainwater Harvesting

  • 1. Environmental Benefits:

    • Reduces Demand on Groundwater: Helps in replenishing groundwater levels.
    • Decreases Surface Runoff: Mitigates flooding and soil erosion.
    • Conserves Water: Provides an alternative water source, reducing reliance on municipal water supplies.

    2. Economic Benefits:

    • Lower Water Bills: Reduces dependence on commercial water sources.
    • Cost-Effective: Once installed, it requires minimal maintenance and operational costs.

    3. Social Benefits:

    • Water Availability: Ensures water availability in areas with irregular water supply.
    • Community Empowerment: Encourages self-sufficiency and community participation in water management.

    4. Agricultural Benefits:

    • Irrigation: Provides a reliable water source for irrigation, especially in dry seasons.
    • Improved Crop Yields: Consistent water supply can lead to better crop productivity.


Rainwater harvesting is a practical and sustainable solution for addressing water scarcity and managing water resources efficiently. With proper installation and maintenance, it offers numerous environmental, economic, social, and agricultural benefits. By adopting this practice, individuals and communities can contribute to water conservation and sustainable development.

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