On Saturday, November 10, 2018 at 10:33:19 AM UTC-5, Steven Watkins wrote:
Why do houses have a switch to turn the shower off, either a cord on the ceiling or a switch in the hall?

Can you please describe the situation more fully. Does this switch turn off
the water, or does it turn off electricity (such as for a light in the
shower compartment)?

Cindy Hamilton