A water butt is one of the simplest and most cost-effective ways to start collecting rainwater. Whether you’ve just bought your first or you’re upgrading your setup, the installation process is straightforward.
What You’ll Need
- Water butt with stand
- Diverter kit
- Downpipe brush (optional but helpful)
- Hacksaw (if you need to cut the downpipe)
- Spirit level
- Tape measure
Step 1: Choose the Location
Position your water butt on a firm, level surface next to a downpipe. The ground should be stable enough to support the weight — a full 200-litre water butt weighs over 200 kg. A concrete base or paving slab is ideal.
Make sure the location is convenient for filling watering cans and close to the area you’ll be watering most.
Step 2: Set Up the Stand
Place the stand on your chosen spot and check it’s level using a spirit level. Most water butt stands raise the tank by 30-40 cm, giving you enough clearance to fit a watering can under the tap.
Step 3: Fit the Diverter
The diverter connects to your downpipe and channels rainwater into the butt. Most modern diverters are snap-fit — no sealant or pipe cutting required.
Measure and mark the downpipe at the correct height (aligned with the water butt’s inlet). Cut a section out with a hacksaw if needed, then clip the diverter into place.
Step 4: Connect the Flexible Hose
Attach the flexible hose from the diverter to the water butt inlet. Most kits include a simple push-fit connector. Make sure the hose slopes gently downward so water flows freely into the butt.
Step 5: Secure the Lid and Fit the Tap
Fit the tap into the pre-drilled hole near the bottom of the water butt — hand-tighten only to avoid cracking the plastic. Secure the lid to keep out leaves, debris, and children.
Step 6: Test for Leaks
Wait for the next rainfall or pour a bucket of water down the downpipe. Check all connections for leaks. Tighten if necessary.
And that’s it — you’re now collecting free rainwater for your garden.