Lived here over 12 years with no water problems in basement, 5 years ago carpeted the basement. No problems. Two days ago, in the middle of one of the large rooms there was a lot of water in the carpet, emptied two containers from carpet cleaner. Water is still seeping in in the center of the room through the carpet, What could be causing this water seeping in?

You could also have a under slab pressure leak. To check to see if you have a hidden leak first shut down everything in the house, no flush, no drinks of water, and if you are on a meter go out and check the little pointer in the gage. It should not move or creep. If it does you have a leak. If you're on a pump then check the pressure gage after the pump builds up to pressure and shuts off. The gage should not fall and the pump come back on. If so then you have a leak. Hope this helps and thank you for rating my reply, Tom