Freak leak

[DebH]

I hope someone can help me figure out where the water could be coming from.
Twice in the past two months I have found a puddle of water standing on the floor but nowhere near a source.
First time was by the front door and small drop down table. My flooring is manufactured laminate.
Yesterday, I noticed a puddle in front of the couch.
No obvious reason for the water. No rain in AZ, no spilled anything. No leak in the sink. I managed to wriggle my head and shoulders into the sink cabinet and all was dry behind the wall.
Obviously, I am very concerned. I had the water heater and toilet replaced at Jackson Center in September.
How can water travel under the floor like this, and where could it originate?
Both times, I was connected to city water, and have also used my flush hose, although the water was not evident the day I flushed.
Help!

[CRH]

Were you running AC?

[DebH]

I was not using the air conditioning. There are no obvious clues on the source. It seems that it is coming from someplace else and traveling between the flooring and the subfloor, but from where? Doesn't make sense.

[A W Warn]

Could it be there is not a leak, but maybe a cold surface that is creating condensation that drips/runs to create the puddles.

[DebH]

Originally Posted by A W Warn

Could it be there is not a leak, but maybe a cold surface that is creating condensation that drips/runs to create the puddles.

I'm in AZ with almost no humidity. Not the problem. It's not next to a wall. There is no water trail. Once I dry the floor, it doesn't reappear.