Water Pump runs regardless of panel switch position.

I would first disconnect the switch(s) circuit at the water pump to determine if the problem is in the pump, or is there is a short in the wiring or a bad switch.

After disconnecting, if the pump continues to run, use an ohmmeter to determine if the switch circuit is closed. If it is then determine if there is a short in the wiring or if it is one of the individual switches.