First post so I hope I've got the right forum for this. I moved into an Alberta home built in 2003 earlier this year. The basement was framed and wired by the previous owner with one room completely finished.
Now I am starting to plan how to finish the rest of the basement and there are a few of these holes in the basement floor. There are two in the furnace room (plus a separate drain) and two near there where the rough in for the bathroom is.
I dug down about 6-8 inches in the hole pictured and hit some water. There is no odour and no pipes either that I could see. Does anyone know what these holes are for?