water puddling around well

Maybe Poo when you have it hooked up to the pool its level doesn't drop as fast and so it leaks from an upper leak

Pure guesswork

Or maybe there's just simply a leak in the hose to the pool

it goes through our main line to the faucet outside...we don't hook up the hose to the well......

Poo I'm not sure what you mean by "it," but I presume the well water is somehow drawn to that faucet. In this case I still maintain that there might be a leak between the well and the faucet

Sheer guesswork of coufrse

if you have an adapter on your pump, its probably sprung a leak . Or, if you keep the pool filling hose in and under the water lwvl of the pool, every time you shut the pump off, you set up a siphon that sucks the water from the pool and brings it back to the ell. There is probably a "foot valve" at the top of the pump that prevents water already in the line from seeping back into the well and theres a leak in the line between the pool and the well. Does this "pooling" happen when the well pump is on or just after its off??