A water butt requires very little maintenance, but a few simple tasks each year will keep it working perfectly for a decade or more.
Spring Clean
After winter, give your water butt a thorough clean before the main growing season.
Empty the butt completely and scrub the inside with a stiff brush and mild soap. Rinse thoroughly — you don’t want soap residue in your watering can. While it’s empty, check for cracks or damage.
Clean the diverter mesh or leaf filter. Debris builds up here and can block the flow of water into the butt.
Summer Checks
During heavy use, check the tap for drips and tighten if needed. Keep the lid secure to prevent mosquitoes breeding and stop leaves from getting in.
If you notice sediment building up in your watering can, consider adding a filtration system.
Autumn Preparation
Clear fallen leaves from around the butt and diverter. Fit a leaf filter over the diverter inlet if you don’t already have one.
This is also a good time to check the stand is stable and the ground hasn’t shifted.
Winter Care
In freezing weather, water expands and can crack a plastic butt. The best approach is to empty the butt, disconnect it from the diverter, and store it upside down for winter.
If you want to keep collecting through winter, insulate the butt with bubble wrap or a purpose-made jacket. Leave the tap slightly open to prevent ice damage. For a low-effort option, simply don’t fill it completely — part-filled butts are less likely to crack.
When to Replace
A good-quality polyethylene water butt should last 10-15 years. Replace it if you notice:
- Cracks that can’t be repaired
- UV damage making the plastic brittle
- Persistent leaks around fittings
With basic care, your water butt will serve you well for many seasons of free, healthy water for your garden.