I have a house that is built on a cement slab. The problem is that everytime the water is turned on to the house the house floods. The house is on a lake a for about 10 years the seawall was not up. Therefore, my dad guesses that the house has moved and pulled some of the plumbing loose. I need to know if this is a reasonable guess or not. I pulled the fuses for the water heater and tried to turn off the water to it and the house still flooded when I turned the water back on. My next question would be, does anyone have a guesstimate on what it is going to cost to repair it if it is in the lines? Thanks for any help/info that you can give.