Reply:
Correct, if the tank itself was leaking it would be a continuous puddle/stream of water near the base of the water heater. I have seen cases when a water heater is depleted completely of hot water and condensation will form a small puddle next to the base of the tank, similar to starting to boil a pot of cold water with a lid on it.
Keep your eye on it.
...If it turns out to be the tank leaking, check the model and serial numbers with a local distributor to see if it's under warranty.
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