Waters is a poet and he speaks of hell metaphorically. There isn't an actual hell. A loving God would never create such a place. Anybody who says he did is a vile and vicious person trying to pervert his loving message.
BTW, Waters didn't say he could tell heaven from hell, he said "So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?"
Completely different from your post.