I purchased a home with an in ground concrete pool. The pool has set empty for years, and I'm pretty sure it originally had some type of liner or tiles. In it's current state when the pool is filled, it slowly drains until just a couple feet of water are left in the deep end. I noticed there is a tiny hole in the concrete just above where the water level seems to finally drain to. I've added some pictures below, can someone please advise what options are available to fix the leaks and restore this pool to use? Also can you tell by the pictures if the pool should have a liner and possibly what type?







