Hello the water will stop in the middle of a shower then the water will start again at the same temp in less then 30 seconds or so.

Municipal water system or well?

Well.

You have a well, tank or switch problem.

First thing to do would be to watch operation and see what pressure switch closes and starts pump. If no changes have been made to the system, most likely problem is defective switch or blocked piping to the switch. Watch cut OFF pressure. Cut ON pressure should be 20 pounds less than cut off pressure.
Turn off breakers and drain tank. Remove switch and check the piping to the switch and the switch port for blockage. While you have system shut down and the tank empty, check precharge air pressure at the valve stem. Should be 2 pounds less than the cut ON pressure of the switch.