I asked my dog Coco, who is an expert on all things stinky. She said that the porcelain water bowl in the bathroom not only is a safe source of water, it is the best source of water in the house.
The porcelain water bowl holds the water up at the perfect height for drinking, etc.
The only problem is that the humans keep shutting the toilet lid; so it is not a reliable source of water.
!WINE
Lol... Dogs are very funny animals, and they can eat feces because food travels through their gut very fast unlike we humans. Coco might enjoy the water but @irivers would not want to have a feel of typhoid, food poisoning, or even sepsis :)