You do realize that YOU are paying for the water AND sewer in your HOA fees. If everyone felt that way, your costs would skyrocket and you'd have nobody to blame but yourself.
What exactly is leaking on the toilet? It might be as simple as a $2 part and take all of 2-minutes to fix.
The only reason a leaking toilet might flood something is if the thing broke and water was coming out on the floor rather than down the drain. Course, if the drain for some reason got clogged, continuing to run water would flow over the top.
Most toilets can be stopped from leaking for less than $20 in parts no matter what is wrong, and the parts are easy to replace. There are exceptions, and in some cases, it's just better to replace them with a new one.
Depending on where you live, legally, you may not be able to do this yourself, and would require a licensed plumber to do it. If it's just a flapper valve, I doubt anyone would object if you replaced it yourself. That should take all of about 30-seconds and less than $10.