what drives the water pump?

[wobbler1]

My auxilary belt on my 2.2 petrol Direct signum has snapped, and I would like to know if it also drives the water pump before I take it to be replaced. I can do the short distance without the alternator charging, but don't want to risk overheating. Thanks

[clive3373]

I'm sure the balance chain runs this.

[benny]

as stated the balance chain runs it ....