Can't get water to shut off

[vanee001]

Hello, and thanks for any help you can give. We moved into this house about 6 months ago and need to replace some o-rings on the kitchen faucet. I have a fair amount of plumbing experience, but this new house has thrown me for a loop. So I went to turn off the faucet and there are no shutoffs under the sink. No problem I'll trace it in the basement to a shutoff. Only to find that there isn't any shutoff until you get to the city supply where it comes in below the meter. I shut that off, it does work and isn't frozen. When I go to drain any residual water out of the faucet, it keeps up at a slow steady trickle. I think maybe it's the second floor draining down, but it keeps coming. The water is ice cold, so I know it's not coming from the hot water heater, and I closed those valves anyway. I can't figure out where the water is coming from. It's not a bad main valve because we have a new softener on the whole house and I closed those valves too. It's steady and I've probably drained off 15 gallons, and it still fills the bucket at the same speed. There's no way we have enough piping to hold that much water from the upstairs. Anyone else ever have a problem like this?

 

[frodo]

inless you have a another water line into the house, your main valve is leaking.thru

disconnect the meter, while you do your think upstairs

then, install a new shut off on the house side of the meter

is your house run in pex ? with a manifold somewhere ? it may have valves on the manifold