Do you have a multimeter or 12 volt test light? If so, you can check for 12 volts at the waterpumps electrical connection points. If 12 volts are there, then I'd say the pump is bad (could try a rap on it with the butt end of a screwdriver to see if it works again).
If 12 volts are not detected (or if test lamp does not light), check for a blown fuse at your panel.
2015 Jayco Jay Featherlight SLX16XRB (TT)
2007 Ford F150 Tow Vehicle (TV)