Water pump replace?
The old adage "If it ain't broke dont fix it" applies here Just like last post keep the coolant changed every two years. It should last up until the timing belt replacement at about a 100,000 miles. You could have it changed then because the cost to remove it is only a hour more on labor cost at the dealer rates of $60/Hr.
A couple ways to check pump is to visually look for leaks and check coolant flow through the engine at the radiator cap. It is hard to see leaks on some cars but a good mechanic with a lift to raise the car could find traces of of water trail at the bottom of the timing belt cover.
The pump in this picture is upper left above crankshaft at bottom center.