How to Make a Water Butt from an Old Barrel: A Simple DIY Guide

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Step 1: Clean and inspect the barrel

Wash the barrel thoroughly and check for cracks, splits or bad smells. Make sure it is suitable for holding rainwater and will not leak once filled.

Step 2: Mark the tap and overflow points

Mark a low point for the tap and a higher point for the overflow. Keep both positions clear of any curved edges or weak spots in the barrel.

Step 3: Drill the holes

Drill the tap opening and the overflow hole carefully. Smooth any rough edges so the seals can sit properly and reduce the chance of leaks.

Step 4: Fit the tap and lid

Install the tap with washers on both sides as needed, then tighten it enough to seal without cracking the barrel. Add a lid or mesh cover to keep out debris and insects.

Step 5: Position and connect it up

Place the barrel on a firm, level base and connect it to a downpipe diverter or rainfall outlet. Fill it partly first to check the tap and overflow for leaks.

💡 Pro Tips

• Raise the barrel on blocks so a watering can fits under the tap.
• Use a lid or mesh to stop leaves and insects getting in.
• Test the overflow before a heavy rainstorm arrives.
• Choose a shaded spot to help reduce algae growth.

⚠️ Safety First

Make sure the barrel is stable when full, as rainwater is heavy. If the container held chemicals or fuel before, do not use it for water storage.