Best water butts for the garden (2026)

The garden-scale ceiling: a thousand litres in a UK-manufactured slimline tank that fits a side return or the strip behind a garage. If you irrigate a serious vegetable plot, this is the difference between a water butt that's empty by mid-June and a reserve that carries you through a dry spell — which is exactly when it matters. A tonne of water demands respect: a flat, load-rated base (a proper slab, not gravel), and it's garden water, not drinking water, without treatment.

Best for A full tonne of rainwater, UK-made, in a side-return-sized footprint.

• Genuine drought-resilience volume for a growing garden
• UK-made, slimline footprint
• Pairs naturally with an irrigation setup

• A tonne full — the base is a small project in itself
• Non-potable; overkill for a patio garden

A tall, slim wall tank holding 650 litres, the capacity of several ordinary water butts, on a footprint of about 52 x 79 cm. At 2.1 metres high it needs a downpipe and a wall to match, and full it holds about 650 kg of water, so it needs a firm, level base. The diverter is bought separately. Like all stored rainwater, it's for the garden, not for drinking without treatment.

Best for Storing the rain from a roof in a narrow strip beside a house or garage wall.

• 650 litres on a footprint of about 52 x 79 cm
• UV-resistant recycled plastic, with an outlet tap and two 3/4-inch threaded connections
• Banks winter rain for hosepipe-ban summers

• About 650 kg of water when full: it needs a firm, level base
• No diverter in the box, and the water is for the garden unless treated

Who shouldn't buy it: Your downpipe or wall is too short for a 2.1-metre tank, or you only have room for something small: a standard 200 to 250-litre butt, or two linked, suits a smaller space.

Stored rainwater is only as useful as your willingness to carry cans of it, which is why a butt pump changes behaviour: drop it in and the butt runs a hose or sprinkler. Gardena's rain barrel pump moves up to 4,000 litres an hour at 1.3 bar, with a removable pre-filter base to keep debris out. In a hosepipe ban, note the fine print: bans restrict mains-fed hoses, and most companies permit hoses fed from stored rainwater, but check your supplier's wording before assuming.

Best for Running a hose or sprinkler from a water butt instead of carrying cans.

• Turns stored water into hose-convenient water
• Up to 4,000 litres an hour at 1.3 bar, with a valve to adjust the flow
• Removable pre-filter base protects the pump and is easy to clean

• Needs an outdoor power supply protected by an RCD
• Check your water company's ban wording on butt-fed hoses

Who shouldn't buy it: You only ever fill a watering can from the butt's own tap: a pump earns its place when you want to run a hose or sprinkler.

A sturdy, long-proven 227-litre butt made in Britain from recycled HDPE, with a child-safe lid and a universal rain trap that fits most downpipes. It is a low-fuss, durable way to bank rainfall for dry spells, and the 5-year guarantee reflects that.

Best for Households wanting a robust, British-made rainwater store to keep the garden going through a hosepipe ban.

• British-made from recycled HDPE with a 5-year guarantee, built to sit outdoors for years
• Sold as a complete kit: three-part stand, tap, child-safe lockable lid and a universal rain trap that fits 68/80/100mm round and 65mm square downpipes
• 227 litres (50 gallons) is a genuinely useful store for watering beds and pots when mains use is restricted

• Complete kits cost more than budget own-brand butts of similar size
• The round barrel has a wide footprint and does not sit flush to a wall, so it needs open space beside the downpipe

Who shouldn't buy it: Don't buy if space is tight against a wall or fence, where a slimline flat-backed butt fits better, or if you only need occasional top-ups and a cheaper 100-litre model would do.

The economical route to more rainwater: link a second or third butt to the first and they fill as one store. It's a simple hose-and-connector job with the fixings included. The honest caveat is plumbing reality: linked butts want level bases at matched heights, and every joint is somewhere to check for drips.

Best for Adding storage by linking the water butts you already own, rather than buying a bigger tank.

• Cheapest way to add serious capacity
• Reuses the butts you already own
• Two kits in the pack, so you can link three butts in a row

• Wants level, height-matched bases
• More joints, more potential drips

Who shouldn't buy it: You only have room for one butt, or you'd rather have a single large tank with nothing to join.

For the gardens where a green plastic butt was never going to be allowed: a 300-litre tank moulded as a terracotta-effect amphora that reads as garden ornament rather than plumbing. Capacity-per-pound it can't touch the plain tanks above — you're paying roughly double per litre for the looks — but it solves the real reason many households never fit a butt at all: someone vetoed the ugly one. Same rules as every rain tank: solid base, and non-potable without treatment.

Best for Proof a rain tank can be an ornament — 300 litres disguised as a terracotta amphora.

• Genuinely attractive — ends the aesthetic veto
• 300L is proper capacity, not token
• Frost-resistant moulding

• Double the price-per-litre of a plain tank
• Non-potable, as with all rainwater

A cheap, sensible way to fill a water butt from your guttering, and most universal kits fit the 68mm round and 65mm square downpipes on typical UK homes. It does one job well, and the built-in overflow means it stops diverting once the butt is full.

Best for Feeding a garden water butt from a standard house downpipe, cheaply and without tools beyond a saw.

• Inexpensive and widely stocked, so easy to source and replace
• Universal fitting covers the round and square plastic downpipes on most UK houses
• Automatic overflow bypass returns excess water to the drain once the butt is full

• Basic kits offer little or no leaf filtering, so a mesh guard or butt lid filter is worth adding
• Thin plastic connectors and short hoses can leak or perish if not seated squarely

Who shouldn't buy it: Your water butt already came with its own diverter, or your downpipes are cast iron or a non-standard size, in which case a matched or bespoke fitting will seal far better.

A neatly designed, UK-made modular butt that stacks in 67L tiers and doubles as a set of self-watering planters, so it earns its place where a plain barrel would look out of place. Useful garden water resilience during hosepipe bans, but treat it as non-potable supply, not drinking-water storage.

Best for Small gardens, patios and balconies where storing rainwater and growing a few plants have to share the same footprint.

• UK-made and genuinely modular — add tiers or link units (67L up to 268L) to fit an awkward space
• Doubles as decorative self-watering planters, so it suits front gardens and patios where an ordinary butt looks utilitarian
• A calm, practical way to bank rainwater for the garden through dry spells and hosepipe bans

• Costs far more per litre than a standard water butt of similar capacity
• Collected rainwater is non-potable — fine for plants, flushing or washing, but not for drinking without proper treatment

Who shouldn't buy it: You simply want the cheapest bulk rainwater storage, or you're looking for emergency drinking-water capacity — a plain 200L+ butt costs a fraction of this, and neither stores water you can safely drink untreated.