• Question: My friend told me that if u leave a bottle of water in the car for a couple of days that it can cause cancer i was just wondering if this is true??? :)

    Asked by sciencetube145 to Gioia, Iain, Jo, Leo, Mariam on 21 Jun 2010 in Categories: . This question was also asked by alisonkatie, kannah.
    • Photo: Leo Garcia

      Leo Garcia answered on 17 Jun 2010:

      No, that isn’t true. It might be a bit warm (and drinking warm water is fairly horrible), but in no way could it give you cancer. Tell your friend that they are mistaken!

    • Photo: Joanna Watson

      Joanna Watson answered on 17 Jun 2010:

      Hi sciencetube145.
      If any bacteria got into the bottle while it was open it might give you an upset tummy – but it won’t cause cancer.
      After a couple of days it is very unlikely to make you poorly at all though.

    • Photo: Mariam Orme

      Mariam Orme answered on 21 Jun 2010:

      I think I talked to one of you about this in a live chat.
      Leaving a bottle of water in a car for a couple of days would not make it harmful. If the bottle is left there for a really long time, then perhaps it’s possible that some of the chemicals from the plastic bottle would leech into the water. But after just a couple of days it should definitely be fine.