Looking for advice on an issue.

Last week, an only 1 year ago serpentine belt was shredded. Thinking on it, I'm sure it was caused by the year-long leak from the oil filter housing deteriorating the rubber of the belt. But that's another story..and issue. The bigger issue at hand is that after the belt blew out, coolant started leaking from the area of the water pump. I since replaced both the belt and water pump (which seemed visually fine). All seemed good for a day until I got a check coolant level and then found coolant leaking again from the water pump as well as a possible coolant reservoir blowout.

Does anyone have any idea how a broken belt could cause the water pump to start leaking (or at least the area around the water pump), and what could have caused a replacement water pump and coolant reservoir to leak after replacing the belt? Thank you!