Water scarcity is becoming a serious concern across the globe, and rainwater harvesting is an effective, eco-friendly, and sustainable way to conserve water. One of the best ways to store harvested rainwater is by using FRP (Fibre-Reinforced Plastic) Tanks. These tanks are durable, lightweight, corrosion-resistant, and ideal for both domestic and industrial rainwater collection systems.
In this blog, we'll guide you step-by-step on how to make a rainwater collection system using FRP tanks.
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Why Choose FRP Tanks for Rainwater Harvesting?
Before diving into the process, let’s understand why FRP tanks are preferred over traditional tanks:
✅ Corrosion-Resistant: FRP tanks do not rust, unlike metal tanks.
✅ Lightweight & Easy to Install: Easy to transport and install without heavy machinery.
✅ Highly Durable: Long lifespan with minimal maintenance.
✅ Customizable Sizes: Can be manufactured in various capacities based on your needs.
✅ Non-Toxic & Safe for Water Storage.
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Materials Required
To set up a rainwater harvesting system with an FRP tank, you will need:
• FRP Storage Tank (Size as per your requirement)
• Gutter & Downspout System (from rooftop)
• First Flush Diverter
• Leaf & Debris Filter Mesh
• PVC Pipes & Fittings
• Ball Valves & Overflow Outlet
• Pump (optional for distribution)
• Concrete/Metal Tank Stand or Base
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Step-by-Step Process to Set Up the System
Step 1: Roof Inspection & Gutter Installation
Your roof is the main catchment area. Clean the roof and install a proper gutter system along the edges to capture rainwater effectively. Ensure that the gutter leads to a downspout directed towards the tank.
Step 2: Install a Leaf Guard & First Flush Diverter
Before rainwater enters the tank:
• Leaf Guard/Filter Mesh: Prevents leaves and large debris.
• First Flush Diverter: The first rain contains dust, bird droppings, and impurities. This device discards the initial flow, allowing cleaner water to enter the tank.
Step 3: Set Up Your FRP Tank
Place your FRP tank on a solid, leveled concrete or steel base. Make sure the tank is elevated enough for gravity-based water flow (if you’re not using a pump).
Step 4: Connect the Downspout to the Tank
Use PVC pipes to connect the downspout (after first flush diverter) to the inlet of the FRP tank. Ensure there is an overflow outlet at the top to divert excess water away safely.
Step 5: Install Ball Valve and Outlet Pipe
At the bottom of the tank, install a ball valve and outlet pipe to access stored water easily. You can also connect the outlet to a water pump if you wish to distribute water to your garden, wash area, or flush system.
Step 6: Test the System
Once installed, conduct a trial during rainfall:
✅ Ensure water flows smoothly through the gutters and pipes.
✅ Check for leaks, blockages, or overflow.
✅ Make sure the tank’s lid is tightly closed to avoid mosquito breeding and contamination.
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Maintenance Tips
• Clean roof and gutters every few months.
• Check and clean the first flush system regularly.
• Inspect the tank for algae growth or debris accumulation.
• Keep the tank covered at all times.
• Clean the inside of the FRP tank once a year.
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Applications of Rainwater Collected in FRP Tanks
🌿 Gardening & Irrigation
🚿 Washing & Cleaning Purposes
🚽 Toilet Flushing
🏭 Industrial Non-Portable Water Usage
🚒 Emergency Water Storage
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Conclusion
Rainwater harvesting using FRP tanks is an excellent initiative toward water conservation and sustainability. It is easy to install, cost-effective, and low-maintenance. Whether for residential, commercial, or industrial use, an FRP rainwater collection system can help reduce your water bills and dependence on groundwater.
Start saving every drop today!