Yes, you can drink tap water on most cruise ships, but the source and cost depend on where you are in the ship and what you order
Tap water in your cabin and at public fountains on cruise ships operated by major lines (Carnival, Royal Caribbean, Disney, Norwegian) is treated and safe to drink. The water comes from the ship's desalination system, which converts seawater into fresh water, or from municipal supplies when the ship is docked. You will not get sick from it, and you will not be charged for it.
The catch is that restaurants, bars, and room service charge for bottled water and other drinks. If you order a glass of water at dinner or from your cabin phone, you may be charged $3 to $8 per bottle or glass, depending on the cruise line and whether you have a beverage package. Many cruisers bring their own reusable water bottle and fill it from cabin taps or public water stations to avoid these charges.
Key Takeaways
- Tap water from your cabin faucet and public water fountains on the ship is safe to drink and costs nothing.
- Bottled water and water served at restaurants or bars will be charged to your account unless you have a beverage package that includes it.
- Bringing a reusable water bottle and refilling it from your cabin tap is the most common way cruisers avoid paying for water throughout the day.
- Water quality on cruise ships is regulated by the ship's flag state (the country where the ship is registered) and tested regularly, though standards vary by line.
How cruise ship water systems work
Most modern cruise ships use reverse osmosis desalination to turn seawater into drinking water. The system forces seawater through a membrane that removes salt, minerals, and most contaminants. The resulting fresh water is stored in tanks and distributed throughout the ship to cabins, galleys, and public areas. Some ships also take on fresh water at ports and use it to supplement the desalinated supply.
The water is then treated with chlorine or other disinfectants to prevent bacterial growth as it travels through pipes to your cabin. This is the same treatment method used by many municipal water systems on land. Cruise lines are required to test the water regularly for bacteria, chemical contaminants, and other hazards, though the testing standards depend on which country the ship is registered in.
The taste of desalinated water is often flatter or slightly different from tap water at home because the desalination process removes minerals along with salt. Some cruisers find it less palatable, which is one reason many bring bottled water or drink other beverages instead.
Where you can get free water on a ship
Your cabin tap is the easiest source. The water is safe, and refilling a bottle there costs you nothing. Most cabins have a bathroom sink and a small sink in the cabin itself (if you have a suite or higher category room).
Public water fountains are located throughout the ship in hallways, near the pool deck, and in some dining areas. These are marked clearly and are free to use. Some ships also have water dispensers in the buffet area or near the main dining room.
If you ask a crew member for a glass of water at a public area (not a restaurant or bar), they will usually bring it to you at no charge. The charge applies when you order through a restaurant, room service, or a bar.
When you will be charged for water
Room service charges for bottled water and glasses of water ordered to your cabin. The cost is typically $3 to $8 per bottle or glass and is added to your onboard account. If you call your cabin phone and order water, expect to be charged.
Restaurants and dining venues charge for bottled water on the table and for water ordered as a beverage. At dinner, if the server places a bottle of water at your table, you will be charged for it unless you specifically ask for tap water. Some restaurants will bring tap water free if you request it, but this varies by ship and dining venue.
Bars charge for water ordered at the counter. Specialty coffee shops and juice bars also charge for bottled water and other beverages. If you have a beverage package (which some cruisers purchase as an add-on), water may be included depending on the package tier.
Beverage packages and what they cover
Most cruise lines offer optional beverage packages that cover drinks throughout the day, including bottled water, sodas, coffee, and alcoholic drinks. The cost ranges from $15 to $75 per person per day depending on the line and package level. A basic package might cover non-alcoholic drinks and water; a premium package covers alcohol and specialty drinks.
If you do not purchase a package, you pay per drink. For a week-long cruise, the cost of buying water and other beverages daily can add up quickly, which is why many cruisers either bring their own water bottle or purchase a package upfront.
Check your cruise line's website or your booking confirmation to see what packages are available for your sailing. You can usually add a package when you book or up to a few days before you sail.
Water safety and testing standards
Cruise ships are required to test their water supplies, but the standards depend on the ship's flag state—the country where the ship is registered. Most major cruise lines are registered in countries like Panama, Malta, or the Bahamas, which have their own maritime water quality rules. The International Maritime Organization (IMO) sets baseline standards that member countries follow.
In practice, major cruise lines test water more frequently than the minimum requirement because contamination incidents damage their reputation and business. Tests check for bacteria like E. coli, chemical contaminants, and physical particles. Results are documented and available to health inspectors.
Outbreaks of waterborne illness on cruise ships are rare, and when they occur they are usually traced to food handling or sanitation rather than the tap water itself. If you have concerns about water quality on a specific ship, you can contact the cruise line directly or check the CDC's Vessel Sanitation Program website, which publishes inspection reports for ships that visit U.S. ports.
Tips for staying hydrated on a cruise without extra charges
Bring a reusable water bottle and fill it from your cabin tap each morning. This is the most cost-effective approach and ensures you always have water available. Most cruisers do this and refill multiple times throughout the day.
Request tap water at meals instead of bottled water. Servers will bring it to you at no charge in most dining venues, though some upscale restaurants may push bottled options.
Use public water fountains when you are on deck or in common areas. They are clearly marked and available throughout the ship.
If you drink a lot of water or other beverages, calculate whether a beverage package makes financial sense for your trip. If you plan to order drinks daily, a package may cost less than paying per drink.
Frequently Asked Questions
Is cruise ship tap water the same quality as tap water at home?
The quality is comparable and safe, but the taste may be different because desalination removes minerals. If you are sensitive to taste, you may prefer bottled water or a reusable bottle with a filter. The water is tested regularly and meets maritime safety standards.
Can I bring my own bottled water on a cruise?
Most cruise lines allow you to bring a limited amount of bottled water in your carry-on luggage when you board (usually one or two bottles per person). Check your cruise line's policy before you pack. You cannot bring glass bottles, and some lines restrict the total amount of beverages you can bring.
What if the water tastes bad or looks cloudy?
Report it to your cabin steward or guest services when ready. They can test it and provide bottled water while the issue is investigated. Discolored or foul-smelling water is rare but should always be reported so the crew can check the system.
Do I need to drink bottled water to stay safe on a cruise?
No. Tap water on major cruise ships is safe to drink. Bottled water is a matter of preference and cost, not safety. Thousands of cruisers drink tap water throughout their voyage without problems.
Will I be charged if I ask for water at a bar or restaurant?
It depends on the venue. At a sit-down restaurant, ask for tap water and it is usually free. At a bar or specialty venue, water may be charged unless you have a beverage package. Always ask the server or bartender before they bring it to your table.