2003 Toyota Echo

I went to mechanic he said the water pump is leaking and needs to be changed. I donot see any leakage so how is it leaking. Second he said break pads rotters need to be changed but there is no noise when i break. I was just wondering do they suggest all this looking at mileage or model.

He gave me 1200 $ estimate for spark plugs, water pump rotter breaks etc. I am just wondering is it all needed or they do it as said in manual.My car does not have any cranking problem no noise etc.

Please advice its lot of money.