A:If the leak is coming from the tank the only fix is tank replacement.. Most probable.. If the leak is coming from the pipe fittings, on top of the tank, or the drain spigot on the bottom of the tank then it repairable. If it is a tank leak don't delay to replace the unit .... Small leaks tend to become major leaks rather quickly !!! (along with major water damage in the residence)
Regards,
Dectech