H looked at it, and it was what I suspected. Our garbage disposal is leaking and needs to be replaced, which he cannot do until the weekend especially as things easily go wrong working on plumbing under old sinks. So for now, we will have to put a bucket under the sink. It leaks whenever we run water in either side of the sink and the dishwasher too. Not sure what will happen with the washing machine, it connects to that water line too. But it is clearly leaking from right under the garbage disposal. I guess at least it’s not a sewage backup from the washing machine. Lost a lot of cleaning stuff under the sink, so bucket we go. It is less gross than sewage leakage but only just, all that old food rotting. Gross...