My buick century custom is leaking antifreeze. The antifreeze is leaking every time I drive it. The radiator was replacedd less than a year and a half ago. Someone told me it could possibly be thge water pump. Any ideas?

I could be leaking from a lot of places. Try to locate a general area were its coming from. If it tends to be from the passenger side of the motor, theres a good chance its a water pump. But it might be a radiator hose or heater hose etc.

Have the system pressure tested. This might sound like a long process, but it involves a handheld cooling system pressure tester. it is installed on the radiator filled neck (cap removed). the handle is pumped until the guage reads the proper system pressure. A good sytem hold pressure for at least 2 minutes. If leaks are visible they are easier to pinpoint, because you can actually see it as it leaks.

place like monroe/midus will test for free