We live in the boonies in the south, and we’ve had a stacked washer/dryer unit for almost 25 yrs., and bigger units before that. I can remember hauling our laundry to the laundry mat as well; but glad I haven’t had to do much of that in a long time. If that fails, we have a river with big rocks to beat the clothes on down below our house.
My wife probably remembers how to do that -- or at least seeing it done where she grew up in India -- but that was WARM water. Here, our river (Columbia) is icy at the edges and, of course, the state Department of Ecology would call a SWAT Team if they saw you making suds in it.