fourth year
If the weld is leaking, check the serial number for the date of manufacture. If it is within the warranty period, 5, 6, 8, 9, 10, or 12 years depending on the model, then the manufacturer will supply a new tank. I would guess that it is a State water heater and if so, the first letter is the month a= Jan b= feb, etc, except i is not used so j=Sept.
