Hidden water leaks can become very costly if left untreated. They will not only damage the room where the leak started, but the water can move throughout the house, causing damage to other rooms as well.

Here are some things that will help you to recognize the sometimes not-as-obvious signs that you have a hidden leak, and get a plumber on the job as soon as possible.

Water Bill Increase

If your household’s water usage hasn’t changed but you notice that your water bill has been going up each month, this could mean that you have a leak.

Look back at your last six months’ worth of water bills and see if you can find when the amount jumped most drastically. This will give you an idea of how long you have had the leak and what potential damage you may find.

Mildew and Mold

Mold and mildew build up in different places within a room as a result of a pipe that is hidden in the wall or under the floor, leaking.

Floors, ceilings, and walls can be harbors for mold and mildew. If you notice this occurring all of a sudden, contact a plumber so the leak can be found and fixed.

Floor Damage

If a floor that is stained has loose tiles or feels like it bounces or moves when you walk on it, more than likely there is water damage.

This happens most often in bathrooms and should be taken care of as soon as possible. If not, the floor could buckle and rot sooner or later, causing even more issues.


If you have an intense musty or earthy smell, you can almost guarantee you have a hidden leak. The water has nowhere to go and is hidden in the walls, floors, or ceilings, never having a chance to dry, therefor causing the horrible smell.

Stained Ceiling

Stained ceilings are a sign that water is leaking from bathroom pipes and traveling through the house. This happens most times in homes that have a second-story bathroom.

Water can travel long distances though a home’s plumbing system, so the leak could possibly cause issues throughout the home.

Wall Damage

A dead giveaway of a hidden leak is warped and stained walls in bathrooms or other rooms. Drywall will become soft and weak and break into pieces if there is a leak in the wall.

Some signs are more apparent than others, but knowing what to look for will help a plumber attack an issue while it is still minor, instead of waiting until it becomes a plumbing emergency.