When packing for a cruise, some guests like to bring their own creature comforts from home – but one such item has recently caused a major disruption aboard a Carnival cruise ship, affecting not just one, but ten cabins in the process.

According to Carnival Cruise Line’s Brand Ambassador John Heald, a guest flushed wet wipes down the toilet – an action that not only blocked their own loo, but also disabled nine others due to the ship’s interconnected plumbing system.
Heald, who shares cruise advice and behind-the-scenes stories with over 600,000 followers on Facebook, used the incident as a cautionary tale.
“We had a situation on a ship yesterday,” he explained, “where somebody had flushed something down the toilet – wet wipes. Now, not only did it block their toilet, and not only did it have this person very upset, but it also blocked and stopped the flushing of nine other toilets. Nine.”
The toilets on cruise ships – whether in guest cabins or public restrooms – are vacuum-assisted systems that rely on narrow piping and suction technology.
That means flushing anything other than bodily waste and the cruise-provided toilet paper can cause major blockages.
While Heald made light of the situation by referencing a fictional crew member – “Luigi the plumber gets very upset about this” – the consequences are no laughing matter.
Cruise ship toilets are delicate – even on new ships
Cruise ships, whether brand new or decades old, all tend to use a very similar plumbing setup. And while Carnival’s toilet paper may not win any luxury awards, it’s specifically designed for the vacuum system.
Heald acknowledged this in his post:
“I’m not going to sit here and proclaim that our lavatory paper is the best toilet paper in the world – it’s not. But it is designed to accommodate the suction toilet system. Please don’t flush anything else.”
That includes not only wet wipes – even so-called “flushable” ones – but also feminine hygiene products, contraceptives, nappies, cotton wool, paper towels, and tissues.
Importantly, guests are not prohibited from bringing wet wipes or other personal hygiene products onboard. However, they must be disposed of correctly – in a bin, not the toilet.
Most cruise ship bathrooms include a small rubbish bin or a sanitary bag dispenser for safe and discreet disposal of non-flushable waste.
If you require additional bags, a note to your cabin steward will usually solve the issue quickly and quietly.
While it may seem a little unpleasant to dispose of wipes this way, it’s a lot less unpleasant than dealing with an overflowing toilet in your stateroom.
Even small products like wipes can cause major chain reactions across multiple cabins. Cruise ships are designed with a shared plumbing network – often servicing cabins in vertical “stacks” – which means one blocked toilet can take out an entire section of the ship’s sanitation system.
In this case, it affected ten cabins, inconveniencing multiple guests and crew members and requiring maintenance intervention. Not exactly the relaxing cruise experience anyone was hoping for.
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Jenni Fielding is the founder of Cruise Mummy. She has worked in the cruise industry since 2015 and has taken over 30 cruises. Now, she helps over 1 million people per month to plan their perfect cruise holidays.
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