Waal, here we are.
My good friend Stephen located the Golden Age Pass on my dresser at home and it will arrive in Moab, UT, on Thursday, USPS willing. Don't snicker, they're actually pretty good at this.
I checked in to the RV park in Gallup, with water and sewer connections, and have been trouble-shooting the smelly water issue. I've isolated it to the hot water heater ... I get un-smelly water at all locations, using the pump and onboard tank OR external water, if I just turn on the cold water. That's something of a relief, because I'm pretty sure it means I don't have to go through draining and cloroxing the big tank. I'm about to drain the hot water heater and see what I discover ...
Doesn't that look like fun?
Stay tuned ...
Yup, the water coming out of the HW heater is smelly. I have bypassed it so that cold water comes out of both sides of the system, so I can't accidentally unleash the smell. For now, I'll consider that a workaround. I can live with heating water on the stove for this trip if I have to. I'll pose the issue to the gurus on rv.net and see if anything gets suggested. I now know enough to pose a half-way intelligent question. I think.