How Do Well Systems Work
A pressure tank, which stores water inside the house, acts as a reservoir. Inside the tank is an air bladder that becomes compressed as the water is pumped in. The resulting pressure in the tank is what moves the water through the plumbing system. When the pressure reaches a preset level, a switch stops the pump. Water is drawn out of the tank, which allows the well pump to rest. When the reservoir level falls to a certain point, the pump comes on automatically, refilling the tank and providing the home with a continuous supply of water.