Me either - although it would be nice to have.
Instead I fill a 9L bucket and use that to fill my sink that I wash my RC prints in.

When I process film, I just take the developed film to my laundry sink indoors to rinse - easy as long as I'm not trying to do the laundry right at the same time!

As others have said - running water is nice, but not necessary - you can always work around it. . . . . . .