air in your water pipes. air in water pipes create noises that last for a while and are there when you haven't used your water recently. follow these steps to release that annoying air from the water lines.
shut off the main water valve by turning it as far clockwise as it will go. in cooler climates this will normally be in the basement if you have one, or possibly in a closet. in warmer climates the water shut off valve may be on the outside of the house near the water meter.
open all faucets in your home. this will include the outdoor spigot, sink, washing machine, shower and every water 