The "curb stop" is the valve that is on the service from the main into your house. i.e. The 8" main in the street has a saddle tap with your 3/4" service line on it. Within 8 ft of the connection between your service and the main is your curb stop. The curb stop is a valve buried underground. In order to open/close the valve a curb box is placed over the valve. It is essentially a metal tube that lets you open and close the curb stop.

Right near the curb

A curb stop is the valve which the city or municipality has installed to turn the water service off and on to a building . Some private systems also have curb stops installed if there are multiple buildings on a common well or water service a curb stop box refers to the enclosure which houses the actual valve most curb stop boxes are not boxes at all but cast iron housings with a pipe that extends to the ground level with a removable cover the valve is accessed with a special wrench which is slid down the pipe and turns the valve off and on.

On average it can cost a wopping $1-10 dollars

A curb stop is the valve which the city or municipality has installed to turn the water service off and on to a building . Some private systems also have curb stops installed if there are multiple buildings on a common well or water service a curb stop box refers to the enclosure which houses the actual valve most curb stop boxes are not boxes at all but cast iron housings with a pipe that extends to the ground level with a removable cover the valve is accessed with a special wrench which is slid down the pipe and turns the valve off and on.