Installing a vinyl over steel panel inground sport-bottom kit from Pool Warehouse. Excavated the other day, and at one end it's pretty muddy and there's a bit of water. There's a "T" where two supply lines for my irrigation system run off in opposite directions from the main feed neat this end of the dig, and at first I thought I'd damaged it when installing the paver patio over it. But I turned the main irrigation shutoff off and the water still seems to be seeping a bit, so I think it's just groundwater. Is this volume anything to be concerned about? The other corner is the same (though the middle is fairly dry). 
Any precautions I need to take during wall install? I have a small 13/HP zero-clearance portable utility pump, but there's nowhere near enough water for that to do anything.

Any precautions I need to take during wall install? I have a small 13/HP zero-clearance portable utility pump, but there's nowhere near enough water for that to do anything.