My gas water heater is leaking?

Question

it seems to be leaking from under the tank

Answer 1

If it's old, bet it's rusting out, especially if you have funky water.

Answer 2

replace it , no way to repair it

Answer 3

There is an overflow/surge pressure relief valve high up on the side of the unit, usually with a downpipe that runs to a pan at the bottom of the unit.  This may be what is pooling water at the bottom.  Call a repairman to inspect.

Answer 4

unless it's leaking from the pressure overflow valve, (which can be fixed with a valve replacement)  you're going to need a new water heater.  You should be able to get one installed for about 800 bucks if it's just swapping the tank.  Tank itself depending on size will cost about 300-600 dollars.