We had our roof replaced. The falling debris (shingles) broke an outside pipe (at the elbow) that was used to drain our water softener system. If I don't fix it, the pipe points downward against the outside wall. Seems like it would drain fine. But I would guess there was a reason it was plumbed to space away from the wall by a couple feet. And, I can't tell if the "fitting" on the end is special or something has broken off there also. So, do I need to fix this?