Why the pipes make gurgling sound?

Pipes make a gurgling sound primarily due to the presence of trapped air or a blockage in the Plumbing system. When water flows past an obstruction, it can create turbulence, leading to air bubbles forming and collapsing, which results in the gurgling noise. This sound can also indicate issues like inadequate venting or drainage problems, suggesting that the system may not be functioning properly. Regular maintenance can help prevent such sounds and ensure smooth water flow.