We have an older house. The cellar drain goes off to a (presumed) drywell somewhere. All that goes down there is a couple of loads of laundry a week. (We have a screen over the drain to catch lint from the wash.) This drain has been gradually slowing down. It still drains, just kind of slowly: if I slow the flow from the washtub, the drain can keep up.
A snake initially got some roots out, but now just occasional mud. The snake gets far enough to be out past the cellar wall. It seems to be running into something solid, as best I can tell. I ran a hose (with a pressure nozzle) down, to no avail. Digging up the drywell would be expensive.
I'd be interested in anyone's experience/ideas WRT this situation.
TIA, George