At the time, the HOA was looking into it, but a few weeks ago they ended up dropping it into my lap. Late last week I got the section of line that was damaged, and today I started making phone calls. I'm supposed to be getting a call back tomorrow about the whole issue.
It kind of feels good to have started fires under a few asses, especially since it seems like I've gotten more done in one morning than the HOA and property manager could get done in a month. Of course, being able to seek legal advice from one's own boss does help :-)