Questions on sump pump for ground water

[cleancloths]

I had a very good builder who was familiar with this type of problem when he built our pool about 8 years ago. What he did for $500 was to place a drywell under the deep end of the pool which is filled with gravel. There is a two inch pipe which goes from that area and connects up to the inlet manifold where our skimmers and main drain feed the circulation pump. When we have had rain or if I notice any looseness in the liner I just valve out the skimmers and main drain, valve in the drywell and set the multiport valve to waste. The main pump then pulls all the water out from under the pool and prevents any problems. It was $500 very wisely spent.

[Dr. Spike]

My water table here is quite high. I have a sump pit next to the pool that keeps the water from getting behind the liner. I can't tell you how it was installed, the pool came with the house.

It is located on the deep end about 5 feet from the pool. It is 2 feet in diameter. I don't know how deep it is, but looks to be 12 feet or more (My pool is 9 feet deep). With my luck if I tried to measure it I would just end up dropping the thing I was using to measure it with down in the pit. LOL!

The sump pump evacuates the water through a backwash hose to the street which is about 140' away. My filter also dumps the waste/backwash into the sump pit.

Edit: I never turn the power off to this, even in the winter. The water level is far below the frost line. It runs whenever it needs to much like a sump pump in the basement that many houses have around here.