Most people experience a water problem in their homes at some point. Usually it involves an overflowing toilet or a clogged sink, which can be fixed with at-home tools and products to help homeowners solve the problem. However, sometimes bigger issues develop, such as a leak of unknown origin or a growing water stain on the wall. In those cases, it is best to contact an experienced plumber who can efficiently diagnose and fix the problem. Although random symptoms of a plumbing issue can occur spontaneously, more complicated problems may evolve following events like the following.