The power of water can be extremely damaging. We use the term “a floating liner” when the ground water pressure is greater than the pressure in the pool. Water will come in behind the liner through the pool floor, cracks, holes, walls or even stairs. The damage this can cause can be very costly. Watertown has the experience and knowledge to deal with these problems. We are one of the only companies that have the expertise to deal with concrete pools and ground water. We have seen other companies not have the knowledge and the entire concrete pool lifted 2′ out of the ground. The damage was extent and the expenses to repair were mindboggling.