With instructions, a homeowner can perform minor repairs on a leaking water heater. If the problem is hazardous, such as escaping gas or a flooded floor if the water heater is electric, a local plumber must repair it.
Water can leak if the water heater's temperature is set too high. Setting the temperature to medium or 120 degrees Fahrenheit can troubleshoot the issue. If the leak persists, the owner can remove and examine the temperature and pressure-relief valve for corrosion and mineral build-up, replacing any damaged parts as necessary.
A water heater can also leak after being flushed to remove sediment. Owners can troubleshoot this issue by either replacing the washer of the drain valve or replacing the drain valve itself.