Leak help

[chip85]

Update

Well, I finally managed to get the cover off and the liner is actually not as bad as I thought. There is about 4 feet of water left ....at close there was approx. 7 ft. So, it's lost 3 feet in 6 months. I marked the water line on the liner so I can tell if it's still leaking. There are no signs of major holes/tears in the liner.

So here are my questions at this point. There appears to be air or water under the liner on the slope in the deep end below the current water line. I would think that the pressure of the water would push this air/water out. If it were water wouldn't it settle to the lowest point which would be on the flat bottom, not the slope? If it were air wouldn't the pressure of the 4 feet of water push it out?

....thanks for any help

[waste]

What you are seeing is 'ground water' either the water table in your yard has raised with rain/ snow melt or that water is not able to pass quickly enough through the ground and is temporarily 'puddled' under your pool. If the pool was full, the water under the liner probably wouldn't be able to push the liner around.

Re the missing water, were you pumping the cover off over the winter? A hole in the cover could mean that you were draining the pool while pumping the cover (but that's an awful lot of water and you probably would have noticed). A broken line at the current height of the pool water could be the culprit, hence my earlier suggestion to pressure test the lines. Has the water stopped at ~ the same height as the multiport? - this could indicate that the water was siphoning.

Thanks for the update, please keep us posted with the progress.

[chip85]

Ok, that makes sense. We had unusually heavy rain this winter and we had water in our basement for the first time since we built the house 13 years ago. I would still think this ground water would be on the bottom of the pool and not the slope, but I'll accept that.

I drain the water off the cover with a hose and actually thought that may have happened, but when I took the cover off the pool water was clean and the cover didn't have a hole. The water is well below the height of the multiport at this point. The only line that low is the drain line.

I'm going to uncover again in a few days to check the water level against the mark I made on the liner to see if it's stopped leaking. Can I pressure test the lines at this point in time? Is this something I can do?

thanks