Hello...
I have a leak.
I have searched everywhere, and the last place I have to look is a buried pipe. It partially passes under a small section patio and a wall, so it is going to be a pain to fix, if... as I presume... it is the source of the leak (if it's not I'm just going to give up I think).
I think I haven't tackled testing the pipe because I really don't know how I'm going to deal with it if it is the problem. But I've done everything else I can think of and/or have read about on here to find the source. Now it is time.
So, my question: If it is the pipe, can a pipe be "stented" (covered from the inside) to fix it without having to dig it up and repair/replace it? Granted, without digging it up, I won't be 100% sure where the leak is, but based on my assumptions on the trajectory of the pipe and some dampness, I can make a good guesstimate where the leak might be. I know it wouldn't be a forever fix (okay, I'm hoping it might be), but I'm willing to try if I can put off demo-ing my patio for a year or 2 to keep my pond going this season.
I'm thinking about threading a collapsible discharge hose up the pipe and securing it on the inflow side. It would likely/hopefully pass OVER the crack and reduce if not eliminate the leak. Basically like how a covered stent graft is used in a person... except it wouldn't be rigid, it would only be held open by the forward water pressure. Some backflow/leak would be presumed, but at least it would be less than what I am experiencing how (about 100 gallons a day).
Or, are there other ways to deal with a leak in a really inaccessible pipe?
Thoughts and opinions much appreciated.