Fastest time to drink 500 ml water
Who
Tim Cocker
What
1.75 seconds second(s)
Where
United Kingdom Manchester
When

The fastest time to drink 500ml water is 1.75 seconds, and was achieved by Tim Cocker (UK), during the XFM Breakfast Show in London, UK, on 9 December 2014.

This record was broken on the Guinness World Record Challengers site (Challengers' tag: xfmbreakfast): http://challengers.guinnessworldrecords.com/challenges/1-fastest-time-to-drink-500ml-water/attempts/6121