What Happens After You Flush on a Cruise Ship

  • Published on Nov 18, 2019
  • These days, any cruise ship is like a huge city, where every detail is thought out so that passengers feel just as comfortable as on land, only better. You can take a shower, do the laundry, or swim in a pool. But where does all the dirty water go?
    The average ship spends about 40-50 gallons of water per passenger every day. It makes tons of wastewater that needs to be utilized. Say, the world's biggest cruise ship, Harmony of the Seas, can carry about 5,500 passengers together with 2,300 crew members. They produce about 312,000 gallons of wastewater daily!
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    Greywater and blackwater 1:16
    How wastewater gets cleaned 1:28
    Why you shouldn't take water from one ocean and throw it into another 2:42
    What about other kinds of waste? 3:55
    Where does all the water on the ship come from? 6:14
    #ships #howitworks #brightside
    - Even though the passengers don’t notice, the water supply system onboard the ship is designed to use the water sparingly.
    - And still, the average ship spends about 40-50 gallons of water per passenger every day.
    - Greywater comes from laundry, showers, baths, and kitchens. Blackwater comes from bathrooms.
    - The highest volume of wastewater comes from greywater. It gets mixed with some of the blackwater and is sent to the bio-reactor.
    - Chlorine and other chemicals aren’t used since they’re bad for the sea’s eco system.
    - The solid waste that was filtered at the first stage is kept in special tanks until the ship arrives at the harbor where it’ll be utilized.
    - Scientists have noticed that ballast water taken from one ocean and thrown into another is bad for the ecosystem.
    - The species of plankton and other sea inhabitants vary in different oceans, and the “strangers” can start destroying the “natives”.
    - Sensitive detectors measure the level of oil in the water, and if it’s even a bit higher than what’s allowed, the water is sent for cleaning again.
    - There’s special staff on board every ship who sort out the garbage into 4 categories - food waste, paper, metal and glass, and plastic.
    - Most of the food waste is considered natural: it doesn’t do any harm to the sea’s ecosystem.
    - Household waste, cooking grease, and solid waste are kept on board until the ship arrives at the harbor and is utilized there.
    - Metal and glass are just thrown overboard. Surprised? These two just drop to the bottom and do no harm to the sea.
    - Strict rules also apply to the passengers themselves. On every deck of a cruise ship, there are usually special instructions that forbid them from throwing anything overboard themselves.
    - Turns out, all cruise ships have desalinating plants. When the ship goes farther than 25 miles from the land, they take seawater, which goes through a many-layered filter, a powerful ultra-violet lamp, and a desalinator.
    - The desalinating plant is the size of a room and gives enough fresh water for all the passengers and crew.
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Comments • 757

    BRIGHT SIDE  24 days ago +144

    Hey guys! Do you separate your household waste?

  • Likedbymany
    Likedbymany 56 minutes ago

    Wow never knew about the desalinating plant

  • Kyle Malin
    Kyle Malin 2 hours ago

    Did any one see the broken light bulb

  • Rehn99
    Rehn99 3 hours ago

    Harmony of the seas isnt the largest cruise ship in the world its actually the symphony of the seas

  • Ray Lam
    Ray Lam 13 hours ago +1

    Like= do not flush the cruise ship 🛳 you the best

  • VHub
    VHub 20 hours ago


  • dan kerber
    dan kerber Day ago

    On Carnival. They’ve been fined numerous times for doing

  • Nathaniel Munoz
    Nathaniel Munoz Day ago

    I thought Symphony Of The Seas was the biggest cruise ship right now

  • Julius llaguno
    Julius llaguno Day ago

    I was working before in cruise ship. And 1 of our ship dumping in the ocean in Europe. They got pinalty huge million of dollars.

  • XxJohnxX
    XxJohnxX Day ago

    Quick Answer
    *It will go away, IT WILL!*

  • Ajay Sharma
    Ajay Sharma Day ago +1

    He said worlds biggest cruise is Harmony of the seas... Isn’t it a actually symphony of the seas ?

  • just another youtuber

    Not to long ago carnival got a huge fine for dumping in the ocean.

  • H Orrett
    H Orrett Day ago +1

    I am on a cruise ship called symphony of the seas

  • DAB Police
    DAB Police 2 days ago

    I poo

  • Hydraulic Mobile Service

    Sounds sad tossing metals and glass overboard

  • Martin Hristov
    Martin Hristov 3 days ago

    What happens a gold shower for the fishes

  • reii minamisaki
    reii minamisaki 3 days ago

    Now i want harmony of the seas or etc often to my country :')

  • Justin Perrine
    Justin Perrine 3 days ago +2

    So we are still polluting the oceans metal and glass is still garbage

  • Computer Shutoff
    Computer Shutoff 4 days ago

    I was pooping while watching this

  • Barrett Born
    Barrett Born 4 days ago +1

    Took you guys 7 minutes to explain one question.

  • Ryan Lamb
    Ryan Lamb 4 days ago

    5:00 that is essentially what an abortion is

  • reuven dove
    reuven dove 4 days ago

    they are slow

  • E1 Clan Fortnite
    E1 Clan Fortnite 4 days ago

    I thought symphony of the seas was the biggest ship

  • Jordan Filippin
    Jordan Filippin 5 days ago +1

    The biggest ship is the symphony of the seas

  • Jordan Filippin
    Jordan Filippin 5 days ago

    The worlds biggest ship is the symphony of the seas

  • Bro Beans
    Bro Beans 5 days ago

    Anybody else recognize the DDE Intro near the end?

  • Justin Bersamina Vlog

    Small TVclipr here.

  • Syed Salman Majid
    Syed Salman Majid 6 days ago

    dde vibes

  • Census
    Census 6 days ago +7

    me: at 3%
    youtube: wanna know what happens to human sewage and disposals on a cruise ship?
    me: say less omw

  • Zachariah Alwan
    Zachariah Alwan 8 days ago

    I love you Bright Side! I have been a subscriber since 2017.

  • Alice Alva
    Alice Alva 8 days ago

    LIES. they do go into the ocean

  • bani and aaron contic

    Brite side your are saying ico system the real saying is eco system plzzzz

  • Puppet Mashup
    Puppet Mashup 10 days ago +2

    I refuse to drink water from a cruise ship now. Thanks, BRIGHT SIDE! NOT SO BRIGHT!🤬🤬🤬
    Still love you though

  • tj Rioux
    tj Rioux 11 days ago

    Thanks for the information! Nicely presented and easy to understand!

  • Paul Gemperlein
    Paul Gemperlein 11 days ago

    I know no one owns the facts and all but this and other videos on this channel are suspiciously similar to Casual Navigator except made clickbait-y. Maybe it's original but still drawn out and clickbait-y

  • Alex Eoff
    Alex Eoff 11 days ago

    its not biggest ship the oasis is the biggest ship ever nub

  • Altaaf Moses
    Altaaf Moses 14 days ago

    Who else thinks that people are complaining about not enough fresh water when they can just clean seawater

    • say10
      say10 12 days ago

      It is a very expensive process plus it is not hard water

  • Amanda Rossiter
    Amanda Rossiter 14 days ago

    How to how does the one how do they get the water to the 10th of the cruise ship

  • caspian farman-farmaian


  • John Smith
    John Smith 15 days ago

    Those Ships are Nothing but Water Pollution Planet Destroyers ! They Disgusts Me !

  • purberri
    purberri 15 days ago

    Not a fan of cruise ships, bad idea in my opinion. Stuck on a ship with thousands of other people no matter why there are so many health issues. And bad for the eco system. You can’t convince me that the shipping lines are compliant.

  • •Wendsi
    •Wendsi 17 days ago

    out of all the names they choose “Special Machine”

  • AdedapoAdedokun SIJUWADE


  • Mike Mischak
    Mike Mischak 18 days ago

    According to this video, there are two separate waste piping systems in each ship's bathroom. One for sinks and showers and another only for the toilet? It would seem to be quite expensive.

  • cam Collins
    cam Collins 18 days ago

    I just went on a cruise

  • pablo job
    pablo job 18 days ago +1


    Not a single soul:

    Bright side: wAtEr WaTeR

  • Raven
    Raven 18 days ago

    Next time I’ll throw away my bottles in the harbour... don’t be SURPRISED

  • Alex Hamilton
    Alex Hamilton 18 days ago

    Half of these are fake.

  • V B M P Tutorials
    V B M P Tutorials 18 days ago

    What Happens After You Flush on a Cruise Ship?

  • Jinwook Do
    Jinwook Do 18 days ago


  • Jake Chen
    Jake Chen 18 days ago

    Wait it’s not the Harmony Of The Seas that’s the biggest it’s the Navigator Of The Seas

  • Mahir Ahmed
    Mahir Ahmed 19 days ago

    the ships can move

  • YingYangSquad!
    YingYangSquad! 19 days ago

    The more u. Know O_o

  • TehPøtãtø Luver
    TehPøtãtø Luver 19 days ago


  • Trenzy Entertainment
    Trenzy Entertainment 19 days ago


    REGIE IRIS 19 days ago

    Nice the good

  • saud alsubeai
    saud alsubeai 19 days ago

    Harmony of the seas is not the biggest cruise ship........symphony of the seas is the biggest.

  • Nick Brown
    Nick Brown 19 days ago

    1 Gallon is NOT 5 Liters!

  • ItzzAngieYT
    ItzzAngieYT 19 days ago

    For literally every reason they do this and that: it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system, it's bad for the eco system.

  • Sahil Manocha
    Sahil Manocha 19 days ago

    I know one more fact about cruise ships

    They are f****** expensive
    Even tho I can't afford it I will still watch this vid!