You can bring water on a cruise, but the rules depend on the cruise line and the type of container
Most major cruise lines allow you to bring your own water aboard, but they restrict how much and what kind of bottle you can use. Royal Caribbean, Carnival, Disney Cruise Line, and Norwegian Cruise Line all permit bottled water in your carry-on luggage when you board — typically one bottle per person, usually up to 1 liter. However, they do not allow you to bring water in glass bottles, and they confiscate any open or partially consumed bottles at security.
The rules tighten once you are onboard. You cannot bring water into your cabin in bulk, and you cannot bring it into the dining room or other public areas in your own containers. The cruise line wants you to buy bottled water from the ship's store or use the free tap water available at beverage stations throughout the ship. Some lines offer a beverage package that includes bottled water delivered to your cabin daily, which is worth comparing to the cost of buying bottles individually.
If you have a medical reason to carry water — for example, you take medications that require it — tell the cruise line when you book. They may make an exception or provide an alternative that fits their safety and revenue rules.
Key Takeaways
- You can bring one sealed bottle of water per person in your carry-on when you board, but it must be plastic, not glass.
- Cruise lines confiscate open bottles and do not allow you to bring water into your cabin in bulk or into dining areas in personal containers.
- Tap water on cruise ships is safe to drink, and free water is available at beverage stations throughout the ship.
- Bottled water purchased onboard costs more than it does on land, so a beverage package may save money if you drink a lot of water.
- If you have a medical need to carry water, contact the cruise line before your sailing to request an exception.
Why cruise lines restrict water you bring aboard
Cruise lines have two main reasons for limiting outside water: safety and revenue. On the safety side, they need to inspect what goes into the ship's water supply and what passengers carry into cabins. A large volume of unknown liquid could pose a security risk, and they cannot verify that a bottle labeled "water" actually contains only water. Glass bottles are banned because they break easily in rough seas and create hazards on deck and in cabins.
On the revenue side, cruise lines make significant money from selling bottled water, soft drinks, and other beverages. Allowing passengers to bring unlimited water would cut into that income. This is why the rules are stricter once you are onboard — they want you to buy from the ship's store or use the free tap water they provide, which costs them almost nothing.
What happens at security when you board
When you walk up the gangway, you will pass through a security checkpoint. Staff there will inspect your carry-on bag and any water bottle you have. If your bottle is sealed and plastic, and you have only one per person, it will usually go through without issue. If your bottle is open, partially full, or glass, they will ask you to throw it away or leave it behind.
Some passengers try to bring water in their checked luggage instead, thinking it will avoid the security line. This does not work — checked bags are screened the same way, and water is heavy, which also increases baggage fees if you are charged by weight. The one-bottle-per-person rule at boarding is the only way to bring outside water onto the ship legally.
Free water sources on the ship
Every cruise ship has free tap water available at beverage stations, usually near the buffet or main dining areas. You can ask for a cup of tap water at any bar, restaurant, or beverage station on the ship, and staff will provide it at no charge. The water comes from the ship's desalination system, which converts seawater to fresh water. This water is safe to drink and meets the same standards as municipal tap water in the United States.
If you are concerned about tap water quality or straightforward prefer bottled water, you can buy it from the ship's store. A single bottle typically costs $2 to $4, depending on the cruise line and bottle size. Over a week-long cruise, this adds up quickly if you drink several bottles a day. A beverage package that includes bottled water may cost $10 to $15 per day, but it also includes sodas, juices, and other drinks, so the value depends on what you actually consume.
Beverage packages and water delivery options
Most cruise lines offer a beverage package that includes bottled water, sodas, coffee, tea, and alcoholic drinks. These packages are sold per person per day and range from about $10 to $20 depending on the line and what is included. Some packages deliver bottled water to your cabin each day, which is convenient if you want water in your room without going to a beverage station.
Before you book a package, calculate whether it makes sense for you. If you drink mostly water and coffee, a water-only package or the free tap water might be cheaper. If you drink sodas and alcoholic beverages regularly, a full beverage package could save money. Cruise lines often offer discounts if you purchase a package when you book your cruise rather than onboard, so check their website for current pricing.
Special situations: medical needs and accessibility
If you have a medical condition that requires you to carry water at all times — for example, you take medications that must be taken with water, or you have diabetes and need to manage your hydration carefully — contact the cruise line's guest services before you sail. Explain your situation and ask what exceptions they can make. Many lines will allow you to bring extra water or a refillable bottle if you have medical documentation.
If you use a CPAP machine or other medical equipment that requires water, the cruise line can usually accommodate this as well. Call their medical or accessibility department directly rather than going through the general booking line — they have more authority to approve exceptions and can note your needs in your reservation.
Refillable water bottles and what the rules actually allow
You cannot bring an empty refillable bottle through security and fill it onboard, because the rules prohibit bringing containers into your cabin or dining areas. However, once you are onboard, you can ask staff at a beverage station to fill a cup or bottle with tap water, and you can carry that to your cabin. Some passengers bring a collapsible water bottle in their luggage, fill it at a beverage station, and keep it in their cabin — this is technically allowed because the water came from the ship's own system.
The distinction matters: you cannot bring water from outside the ship into your cabin, but you can carry water that came from the ship's own tap. If you want to avoid buying bottled water and do not want to walk to a beverage station every time you are thirsty, ask your cabin steward if they can leave a pitcher of tap water in your room. Many will do this if you ask politely.
Frequently Asked Questions
Can I bring a gallon of water in my checked luggage?
No. Cruise line security screens checked bags the same way they screen carry-on bags, and water is prohibited in both. Water is also very heavy, which can trigger baggage fees if your cruise line charges by weight. The one sealed bottle per person at boarding is the only outside water allowed.
What if I need water for my child or infant?
You can bring one sealed bottle of water per person, including children. If you have an infant and need bottled water for formula or drinking, bring one bottle per family member and ask the cruise line if they can provide additional water or deliver it to your cabin. Many lines will help with infant needs if you explain the situation when you board.
Is the tap water on a cruise ship safe to drink?
Yes. Cruise ships use desalination systems to convert seawater to fresh water, and the water is tested regularly to meet U.S. Environmental Protection Agency standards. You can drink tap water directly from any faucet on the ship without concern.
Can I bring water in a reusable bottle if it is empty?
You can bring an empty reusable bottle in your luggage, but you cannot fill it with outside water before boarding. Once onboard, you can fill it at any beverage station with the ship's tap water and carry it to your cabin. This is allowed because the water comes from the ship's own system.
Do all cruise lines have the same water rules?
Most major cruise lines follow similar rules — one sealed plastic bottle per person at boarding, no glass, no bulk water in cabins. However, specific policies vary slightly by line. Check your cruise line's website or call their guest services before you sail to confirm their exact rules.