Why does my hot water heater overflow keep discharging water?

Your hot water heater overflow may be discharging water because of a malfunction in the pressure relief valve. This valve is designed to release excess pressure to prevent the tank from bursting. If it is continuously discharging water, it could indicate that the valve is faulty or that the pressure in the tank is too high. It is important to have a professional inspect and repair the issue to prevent any potential damage or safety hazards.