I've been on planes where the only sink available is in the toilet. What would be the best thing to do in regards to negel vasser/netilas yodayim?

Edit: The toilet is a mokom tumah. Furthermore, the Lubavitcher Rebbe once told someone (I don't recall who) not to take water from there to use for negel vasser.

  • similar judaism.stackexchange.com/q/3396/759
    – Double AA
    May 13, 2016 at 1:40
  • "The toilet is a mokom tumah" perhaps edit this to clarify. I doubt you refer to tum'at met, or to some other formal tum'ah. Perhaps clarify that your mean general "badness" (if that is what you mean).
    – mevaqesh
    May 13, 2016 at 2:08
  • @mevaqesh I can find the source in Shu"a. You can't say daven, say brochos etc
    – user613
    May 13, 2016 at 3:22
  • I think you can take water from there and even wash your hands there. Also todays conveniences are clean, similar to what are called persian ones, although not exactly the same, and dont necessarily have the din of mokom tomai.
    – newcomer
    May 13, 2016 at 5:15
  • 1
    Yes but unlike the "persian" ones they dont do it "straight" away. @Yehoshua.
    – newcomer
    May 13, 2016 at 11:55

2 Answers 2


הרב רצון ערוסי paskens that

א. מותר ליטול בבית הכסא רק את הברכה יברך מחוץ לבית הכסא. יהיה בית הכסא אשר יהיה. ב. בית הכסא (מודרני) של ימינו (אסלה ומי ניקוז וכיסוי לאסלה), מותר לברך מחוצה לו, ואפילו כנגדו, אך לא בתוכו.

1) You can wash your hands in a modern toilet but must say the berocho outside

2) One may make a berocho outside a modern toilet (with toilet drain and toilet cover) even opposite it but not inside.

The Rav's bio reads in part: He is the Rav of Kiryat Ono and a member of Israel's Chief Rabbinate Council.


I once saw somebody on a plane do netilat yadayim at his seat. He had carried a bottle of water onto the plane and used small amounts of it over a plastic cup. (I don't know if he brought the cup on or if he got it from an attendant.) I didn't ask him about it, so I don't know his sources or tradition.

While in some locations, including the US, you can't carry a bottle of water through airport security, you can either carry an empty bottle and fill it from a drinking fountain on the other side or purchase a bottle after going through security.

  • Sounds good, although a cup is a bit small to pour into. Maybe if you pour into a bag with no holes, like a vomit bag which is easy to close. Also, bottles are often supplied on the plane. I once heard that bottles with narrow openings are problematic, though I have no idea why nor a source.
    – user613
    May 13, 2016 at 3:25
  • Usually you can carry up to 100ml but on any plane I've been on, especially if it's a long enough journey, they have water available to drink (and you could wash with it).
    – CashCow
    May 13, 2016 at 8:41
  • 1
    @user613 it was one of those short, wide cups, like the ones the airlines use when they serve drinks. The bigger challenge might be disposing of the now-full cup; I didn't notice what he did with it. May 13, 2016 at 14:39

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