I have a floor drain that is making running water noises. I looked in and saw that there was a stream of water pouring into it from about 6-12 inches down into the drain, from an outlet on the side. There are no toilets flushing, dishwashers running, or any other water source that could cause this.
I do have a sump pump but from what I have read those do not empty into floor drains, they empty outside. It has been raining a little bit, but as of right now it is not and probably hasn't been for a couple hours.
It's not backing up into the basement but I am a new homeowner and do not have any point of reference for what this is and whether I need to be concerned or call a plumber. I have done some googling but haven't found anything there. I also have a general home repair book I looked through but nothing seemed to apply here.
I believe this water has been running for at least a day now, but I haven't been going into the basement lately and don't know exactly how long. As far as I know it's constant.
Where is this water coming from?