I want to add a water softener and don't want to make assumptions. Is this a drain that I can use for the softener's backwash? Thanks in advance for the help.
The inlet and outlet at the bottom of the picture go to my whole house water filter.
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looks like a drain for a W/M standpipe.
You have a catastrophe in the making with that PVC piping inside the house.
LOL... so true. I assume it is a combustion air supply.You don't want to make assumptions ... so you get on the internet and ask folks who can't possibly know even as
much as you about that pipe, and ask THEM to make assumptions ... ?