So you have the zetec engine then right? You have two schools of thought. #1 if it ain't broke...... But then again if the parts are not that exspensie then bu all means do it and the water pump while you are in there. Preventative matenince rarely is a bad thing. Now if you have the V6 you don't have timing belts but rather chains and it is a common beleif that they don't need to be replaced. At least not every 100000kms.
