Mystery Small Pool Of Water Bathroom

[tali1]

There is a mystery small pool of water at the entrance to my downstairs bathroom.It seems to happen overnight and there seems to be no source and nothing else in bathroom shows sign of leakage or wetness .There is a towel radiator closest to water but that is dry and has no trickle.A friend reckons its an underground pipe that is leaking and also as there is a slope and the water is settling in direction of slope.This has been going on for some time and initially i thought it was my son being messy.
We are heavy water users but my water supply seems fine Is there anything else i should look for ? I believe my Water company would not be responisble for any repair here?

[EDDIE51]

Is this a 'who dunnit' ?
What ever, as it is inside the house it is not the water company who are responsible it is you. Call a plumber.

[jourdain2]

Do you have a cat?

[Baldric]

or a Dog?

[tali1]

Boom boom!

[bunkmoreland]

Could it be condensation dripping off the door? We had that happening in our hall door.

[malagabob]

Have a close look at your toilet cistern esp underneath is there condensation up to the level of the water inside.

[tali1]

It is a plastic cistern and yes there is water at the base of the cistern.It is an enclosed unit.