I just bought an old Victorian house in Plymouth. There was standing water in the basement, which I thought just needed pumping out because it had accumulated after heavy rain. When I moved in and started pumping, I discovered a finger-width-sized hole in the floor (looks drilled, very deliberate?) that bubbles up new water with every pump with a fair amount of force. It ALWAYS returns to the same level after pumping it out then stops, like a foot deep. No matter how many times I pump it comes back to the same level, it's hard to tell but heavy rain seems to make it rise slightly. High water table was suggested, but I've pumped it a bunch of times with zero effect, and it's a terraced house halfway up a steep slope, all the houses have basements and only mine has this issue. I've had someone check my drainage pipes, all found to be okay. A natural spring has been suggested, but would it return to the same water level every time? The water company has tested the water, and found trace amounts of chlorine, but not enough for them to think it's their water apparently... I'm at a loss for what to do. If I just put a sump pump in with the constant flow it's at it's gonna be running 24/7 and electric prices aren't cheap to begin with...