Problem
Water stains or dampness appear on the wall, suggesting a pipe leak behind it.
Possible Causes
Damaged plumbing pipe
Loose pipe fittings
Corroded pipes
High water pressure
How To Fix It
Turn off the main water supply
Inspect nearby plumbing fixtures
Look for visible moisture or mold
Avoid using affected plumbing fixtures
When To Call A Professional
A hidden pipe leak usually requires a plumber to locate and repair the damaged pipe.