If you are experiencing water around the furnace area while it is operating this could be coming from your furnace or your humidifier if you have one installed. It is important to note that ONLY high-efficiency furnaces produce water while they are running. Standard efficiency furnaces exhaust their fumes into the chimney whereas high efficiency furnaces exhaust their fumes through a plastic PVC pipe that runs independently of the chimney. Both a high-efficiency furnace and a humidifier have a drain line that over time can become clogged leading to there being water on the floor. The water also be coming from a clogged humidifier or old humidifier water panel that needs to be replaced. The high-efficiency furnace must also be checked internally to make sure that there is no water leaking from the furnace itself.