This is a simple water flow diagram...

This won't be a trip killer until you get it fixed. You can just fill up the fresh water tank when you arrive at your camp site and use the on-board water pump for your fresh water needs. A quick way to fill your fresh water tank at the camp site is to bring along a hand held water spigot and squirt water from the pedestal water connection directly into you fresh water tank. We use our fresh water tank and pump alot at camp sites that have low water pressure...
I don't know if you could glue the broken threaded port back together enough to use or not. I see the one-way valve is still in place so it should not leak when you pump starts working... If you start squirting water out of the city water connection with the pump running then you will need to stop this port up somehow...
Always something huh !!!
Roy Ken