Backup Options During a Power Outage After shutting off the main water valve, water stops running on the top floor but continues to run on the 1st floor and basement. This happened suddenly and did it for both handles. If you find that your water meter is still turning even when your water is off, it’s time to call a plumber. Replacing a spout isn't difficult, and you don't even have to turn off the main water supply. The principle behind a faucet is simple: turn it on -- water flows; turn it off -- water stops flowing. Even when the valve is turned into the off positions, there is still some residual water in the faucet, and aereator. There may be a hidden plumbing leak in the walls of your home, or maybe your toilet is running when it’s not in use. If the kitchen is the lowest one, then your water meter is the next and final choice. Shut off your hot water tank. It slows to a trickle and then to a severe and the eventually stops. I understand that back pressure from the water heater can cause water flow after shutting off the main valve. If you’ve ever turned your shower on but noticed that there was still water running from the tub’s faucet, you may have wondered what was wrong with your shower. Answer 1 of 6: It depends on the faucet and whether the faucet has an aereator. You’d probably be especially frustrated by the lack of pressure coming from your showerhead because it makes it difficult to shower properly. If you think your pipe has burst, turn off the water the home's main shut-off valve but leave the faucets turned on before calling in your plumber. How to thaw frozen pipes What do you want to do? I turned off the main water shut off, but water still comes thru to the sink? The water in your bath tub shouldn't continue to run after the water has been shut off. ... or maybe out side turn it on and the water will run out there instead in the kitchen. I am guessing you want to replace the faucet, or possibly replace the washer if you still have that type. Once your power is back on, reverse the actions in steps 1, 2, 5 and 6. You say you know how to fix the pipes, but the pro will have more knowledge and experience in dealing with water still flowing after shut off valve has been turned off. If you feel unsure about any of the above tips, feel free to consult a plumbing professional. The first step is to figure out how the spout is attached. If you happen to have an electric water heater, turn it off. Now, one other thing to consider is that you should hire a pro to do this. 4 year old Delta two-handle kitchen faucet model #21902-LF, Original problem: Water kept running for severalseconds after we turned it off. And I do hear a "hissing" sound around the water heater when water continues to flow with the main valve shut. These “hidden” leaks can cause your home to be using water even when your main water valve is turned off. 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