A blocked pipe occurs when the flow of water or other substances through a pipe is obstructed. This blockage can be caused by various factors, such as the accumulation of debris, grease, or foreign objects. When a pipe is blocked, it can lead to slow drainage, backups, or even flooding in severe cases. Blocked pipes are common in residential and commercial plumbing systems. Regular maintenance, such as cleaning and inspections, can help prevent blockages. If a blockage occurs, professional services may be required to clear the pipe using tools like drain snakes or hydro-jetting.