Depending on the size and makeup of your building, it might be difficult to track the overall condition of every part of it. This makes it hard to catch problems before they get serious. Few things have such damaging potential as water. Even a small leak from a pipe or a tiny hole in your roof could end up costing a lot of money if undetected for a long time. Water damage can cause mold, structural damage and a number of other problems. The problem gets more difficult to deal with because water can travel quite some distance along pipes, so the area where you see the damage isn’t necessarily where the problem originates.
If you do notice water accumulating inside your building, you should immediately take the time to find where it is coming from and then remedy the problem. The time and effort it will take is nothing compared to what it will cost if you leave it alone for a long period of time.