In the meter box located on your property is an angle stop. The angle stop has two ears on the left and right sides. The middle of the angle stop is marked with an arrow, indicating which direction the water is flowing. To turn off the water at the angle stop, place channel locks or a special turn off wrench (which can be purchased at your local hardware store) on the center of the angle stop, where the arrow is located. Turn angle stop clockwise until both ears are together, approximately 180 degrees. To turn water back on, turn the angle stop approximately 180 degrees the opposite way, or until the arrow on the angle stop is facing the meter.
Please see below link for a photo example of an angle stop.Angle Stop Example Picture