Because stackable long-term water containers featured in American prepper videos are hard to find in the U.K., one prepper began looking at blue plastic drums as an alternative.
That search prompted a wider exchange about garage storage, contamination concerns, cost, and the downside of putting too much of a water supply into a small number of containers.
Here's what to know
A post in r/UKPreppers asked whether large blue drums were a sensible way to store household water for long periods in the U.K.
The original poster said the container would sit in a garage under "a black tarp" and that they would "rinse with iso 75 before storage and gently chlorinate for storage."
The scale under discussion was much bigger than a basic backup cache.
"I've got 50x5L bottles too, 3x lifestraws and a 3gal filter reservoir," they said. "I could buy 5 of these, and my stored water goes from a 20-day supply to a 150-day supply."
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That shifted the thread from the merits of one barrel to the broader question of keeping months of water at home.
"I have one of these purchased from ebay over five yrs ago," one user said, adding that it had been "stored outside and only opened this year to water the roses due to the drought…it was crystal clear water which amazed us."
Even so, that same user drew a line between having water stored and treating it as ready-to-drink.
"It was sold as water storage. I haven't used it as drinking water, but if needs must I would using the tablets and/or boiling," they said.
More background
Not everyone liked the idea of concentrating so much water in large drums.
One user pointed instead to "25litre plastic food safe water storage tubs" with taps that "stack on top of each other."
Others said ordinary bottled water may be the simpler answer.
"Easier (to manage, rotate, etc) and cheaper to buy if you just stack a load of 5l spring water bottles," one user said.
In that view, emergency storage is as much about handling and rotation as it is about sheer volume.
Another reply said the issue is around failure points rather than storage size alone.
"This goes to redundancy really," they said. "If you're storing a lot of multiples of 100l of water then this could be helpful, but realistically if you're storing 200l that's two barrels and only one needs to have an issue for you to have lost half of your storage. Contrast that with 40 individual 5l bottles, what are the odds of 20 of them getting compromised?"
One user added, "If you're looking at being ready for 6 months of issues, then that has other considerations like security etc. Personally, if I were considering 6 months of water, I would be thinking along different lines to storage in that quantity."
What can be done?
The replies leaned toward mixing storage methods instead of relying on one format. The user with the outdoor barrel said they had also purchased "6 of the 25l water storage stacking tubs with taps specifically for drinking" and kept "bottled mineral and spring water" as well.
In summary, while large drums could expand a reserve from roughly 20 days to 150 days, 1.3-gallon (5-liter) bottles were seen as cheaper and easier to rotate, and stackable 6.6-gallon (25-liter) food-safe tubs sat somewhere between those two options in both capacity and manageability.
Where can I learn more?
If emergency water storage is on your mind, safety, purpose, and size should all be considered when making a decision.
• In Los Angeles, a fire evacuee's potable water discussion centered on saving bottled supplies.
• A homeowner building cheap and easy emergency food stores weighed allergies and vegetarian diets.
• Preppers found creative ways to repurpose used pill bottles for compact emergency kits.
• Gardeners pushed back on the myth that rainwater collection is illegal in many places.
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