DIY Rain Barrel
Description
Building a DIY rain barrel is one of the most rewarding projects for any water-wise gardener. Instead of buying a new unit, we encourage you to repurpose a common household item, such as a 200-litre (44-gallon) food-grade plastic drum or a sturdy, clean bin. This project not only saves money but also reduces waste, giving a second life to an object that might otherwise end up in a landfill. By capturing rainwater from your roof, you create a free, chemical-free water source perfect for your native plants.
Method
What You Will Need
- A recycled drum: A 200-litre (44-gallon) food-grade plastic drum (often available from local bakeries or chemical suppliers).
- A tap tap (spigot): A brass or plastic tap suitable for outdoor use.
- A mesh screen: To prevent insects and debris from entering.
- A drill and bits: For making holes.
- Silicone sealant: Waterproof and non-toxic.
- A stand: Bricks, wooden pallets, or a custom-built frame to elevate the barrel.
- A downspout diverter: A simple kit or a custom-cut pipe section to direct water from your gutter.
Step-by-Step Instructions
- Prepare the Drum: Ensure your recycled drum is thoroughly cleaned and free of any chemical residues. If it has a lid, clean it well.
- Drill the Tap (Spigot) Hole: Measure approximately 10cm (4 inches) from the bottom of the drum. Drill a hole large enough for your tap. Use P.T.F.E washers (gaskets) to seal the hole when fastening the tap. Alternatively apply a generous amount of silicone sealant around the hole on the inside and outside before inserting the tap. Tighten the nut and let it cure completely.
- Create the Overflow: Drill a second hole about 5cm (2 inches) below the rim. This will be your overflow outlet, directing excess water away from the foundation of your house. A great water-wise solution here is to have an overflow pipe leading the excess water to a garden bed or pehaps a swale.
- Install the Mesh Screen: Cut a piece of fine mesh wire to fit over the top opening of the drum. Secure it with a wire tie or a custom lid to keep out mosquitoes and leaves while allowing rain to pass through.
- Build the Stand: Construct a simple stand using bricks or a wooden pallet. Ensure it is level and sturdy enough to hold the weight of a full barrel (approx. 200kg / 440lbs).
- Connect the Downspout: Cut your downspout to fit the diverter. You can use a simple elbow or a commercial diverter kit to direct water into the barrel. Ensure the overflow pipe directs water away from your home’s foundation.
- Final Check: Once installed, run some water through the system to check for leaks around the tap and overflow.
Conclusion
Building a DIY rain barrel is a fantastic way to embrace sustainable living while saving money on your water bill. By reusing a common item like a food-grade drum, you are actively participating in a water-wise garden that respects the local ecosystem. This project not only provides a reliable water source for your plants but also reduces stormwater runoff, protecting local waterways. It is a simple, cost-effective, and highly satisfying addition to any native habitat garden.
Remember, every drop counts, and this DIY rain barrel is your first step towards a greener, more resilient garden.