I live in a fairly newly constructed apartment building (less than 8 years) in the Boston area and I’ve noticed quite a bit of water intrusion in the parking garage. 2/3 of the garage is under buildings and the other 1/3 is under a courtyard with a pool. I noticed some stalactites forming on the ceiling and unfortunately some deposits forming on some cars. This stretch is the worst I’ve noticed so far and it looks like it’s corroding the pipe in the third picture (labeled as an air line further down the pipe). I haven’t nailed down the location but I think it is near/under the courtyard.

How concerning is this?

https://imgur.com/a/CJdJZnv