What is a well pressure tank?

A well pressure tank holds water that has been pumped from a private well and keeps it under pressure. This pressurized water supply allows faucets, showers, and appliances throughout a home to deliver consistent flow without the pump running constantly.

The tank works by storing water in an air-tight chamber. As the well pump fills the tank, water compresses the air inside, building pressure. When you open a tap, water flows out at that stored pressure. Once the pressure drops to a set level (typically around 40 psi), the pump switches back on to refill the tank. This cycle means the pump runs in short bursts rather than continuously, which extends its lifespan and improves efficiency.

In the Aiken area, where many homes rely on private wells rather than municipal water, a functioning pressure tank is essential to normal water service. Tanks typically range from 20 to 120 gallons depending on household size and water demand. Over time, tanks can lose air charge, develop internal corrosion, or leak at seams and fittings, all of which reduce system performance. Regular inspection and maintenance help keep a well system reliable. Homeowners dealing with pressure issues, frequent pump cycling, or signs of tank failure should contact a qualified plumber to diagnose and repair or replace the tank.