I did this in my old house in the basement with concrete floors. No big deal. Then I moved into an apartment and did this. Needless to say. The guy below called the landlord and said his ceiling was wet. That was bad. It ruined all the tiles in my hallway, carpet and the down stairs guys ceiling.. I blamed it on my toilet so I didn't have to pay damages. It was such a mess. I felt bad, but I couldn't risk getting in trouble and have to pay. I learned my lesson and bought a auto shut off. If anyone buys a 200 dollar RO and not a 25 dollar auto Shut off, well your asking for it and will cost you big time.