Comment on Charlotte County, Virginia Amish by Robin Miller.
From what I’ve heard most Amish now have indoor plumbing in their homes, including running water in their kitchens and yes, bathrooms. You’d probably find some old timers still using backhouses. I’m guessing it would all depend on what their individual communities allow. Most also allow propane stoves and refrigerators. Cell phones can be allowed as long as the user needs it for their business or for health emergency issues.