The water is driven by a pump up near the engine, so it sounds like your wiper motor is getting no power or just plain knackered.
Mine is getting old and it sounds like a replacement is about 80 pounds !!(including VAT)
I would hope it hasn't leaked and either burnt out or shorted itself: I'd like to think the motor would last longer on a 2001 car (mine is a 1999)
One other thing if you try anything yourself: the boot trim is an absolute p1sser to remove - you really have to heave on it to get it off, so be careful, and try to get an image of where the boot clips are so you know where they are and how many you're dealing with.