UK STATUS10 hosepipe bans in force·Reservoirs 56.1%·10 areas in drought·NRR: power outage rated catastrophicChecked 20 Sep 2026
HomeKit reviewsWater buttsEnduramaxx 1000L Slimline Rainwater Tank
Review · Water butts

Enduramaxx 1000L Slimline Rainwater Tank review

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

By Tom Calder

Our verdict
4.4 / 5

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.

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What we like
  • Genuine drought-resilience volume for a growing garden
  • UK-made, slimline footprint
  • Pairs naturally with an irrigation setup
Worth knowing
  • A tonne full — the base is a small project in itself
  • Non-potable; overkill for a patio garden

Key specs

Capacity
TypeSlimline rainwater tank
How this review works

Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →

Alternatives to consider

Harcostar 227L Water Butt
as of 20 Sep 2026, 12:29 BST · DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
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