Choose a water butt for your downpipe and can

Check the connection and the overflow route

Identify the downpipe's shape and dimensions and compare them with the diverter kit's stated compatibility. Confirm whether the connection kit is included or sold separately. The RSPB's installation guide describes the need to consider the position beside a downpipe and the connection arrangement. Follow the exact product instructions for heights, overflow and fitting rather than applying a generic measurement. Water must continue to drain through an appropriate route when the butt is full. Do not improvise alterations to shared drainage or guttering without the relevant agreement. Photograph the existing arrangement and ask the supplier specific questions if the kit description does not clearly match it. A larger butt is not useful if the connection cannot be installed properly.

Plan support for the full container

Choose the base and stand specified or permitted by the manufacturer, with suitable preparation for the location. The full container is much heavier than the empty shell, so do not balance it on loose or improvised supports. RSPB guidance highlights a firm, level position; the product instructions determine the detailed setup. Measure the complete footprint including the stand and any stabilising requirements. Keep the butt clear of routes where it would obstruct movement or maintenance. On a balcony or another supported structure, obtain appropriate advice about loads and permissions rather than assuming that a small footprint makes the filled weight acceptable. Decide the permanent position before filling, because moving a loaded container may be unsafe or prohibited.

Make drawing water convenient

Measure your watering can with its handle and compare it with the clearance beneath the tap. Check whether the can can be positioned and removed without tilting it awkwardly or catching the spout. Consider access to the tap when nearby plants grow larger. A slimline butt may fit a narrow wall space but still have an outlet that is inconvenient for your equipment. Check the tap's operation and replacement availability, and ensure any hose attachment is explicitly supported. Do not assume the stored water is suitable for drinking or household use. Keep the system clearly intended for the garden and follow appropriate guidance for the plants and method of watering.

Keep the lid and maintenance accessible

The RHS guidance on collecting and storing water describes precautions for stored water and its use. Keep the lid secure as instructed to prevent access by children and animals, and avoid creating an open container of stagnant water. Plan how you will inspect filters, clear debris and clean the system according to the maker's guidance. If water is delivered through a hose, follow the relevant advice about spray and draining rather than creating fine airborne droplets from unsuitable stored water. Keep installation details and part numbers for future maintenance. A successful water butt provides a usable supply for the garden while remaining securely supported, appropriately connected and straightforward to inspect throughout the year.

Your next steps

• Verify downpipe and diverter compatibility.
• Prepare support for the full load.
• Measure watering-can clearance beneath the outlet.
• Keep lids secure and maintenance accessible.

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