Hey there!

I had my DD in the bath at the birth centre, so I don't know about getting the carpet wet lol, but the water does get pretty murky/bloody. Not hideously so, but you wouldn't want to drop your keys in there lol.

At the BC they just pulled the plug & bye bye water, although at home I think you'd be right to tip it on the garden if you wanted to.

Hope this is some sort of help... although reading back... maybe not so much...