There are several reasons for water to come through a ceiling and not all of them are connected with your plumbing system.
Water coming through a ceiling after a shower can be the result of a plumbing leak, usually it's an upstairs bathroom and needs either the drain repaired or the shower valve needs to be replaced. It's recommended to have a leak detection to locate the source.
When this occurs don't hesitate to call a professional. Mr. Speedy is always available for your convenience.
