The practice of allowing a small, continuous flow of water from a tap is a preventative measure typically implemented during periods of cold weather. This action, often referred to as letting the faucet run slightly, aims to mitigate the risk of frozen pipes. A slow, steady stream maintains water movement within the plumbing system, reducing the likelihood of ice formation and subsequent pipe damage. For instance, during a sustained period of sub-freezing temperatures, homeowners may choose to slightly open faucets, particularly those connected to pipes located in uninsulated areas of the home.
The value of this practice lies in its potential to prevent costly repairs associated with burst pipes. Water expands when it freezes, creating significant pressure within the confines of a pipe. This pressure can lead to cracks, splits, or complete ruptures in the plumbing. By ensuring a continuous flow, however minimal, the pressure buildup is lessened, and the freezing point of the water within the pipes is effectively lowered. Historically, this was a common and readily available method before the advent of advanced insulation techniques and pipe heating systems.
