What is the purpose of swabbing in a water distribution system?

Swabbing in a water distribution system primarily serves the purpose of removing debris and sediments from the interior of pipes. This process is essential for maintaining the integrity and quality of the water being distributed. Over time, pipes can accumulate sediment, biofilm, and other contaminants that can affect water quality and flow. By using swabbing techniques, water utilities can effectively clean the interior surfaces of pipes and improve both water clarity and taste.

Additionally, regular swabbing can help reduce the risk of contamination, ensure optimal flow rates, and maintain compliance with health and safety standards. It is a proactive maintenance strategy that supports the overall efficiency and reliability of the water distribution system. The other choices do not accurately represent the main function of swabbing, as swabbing specifically pertains to the cleaning of pipes rather than testing pressure or monitoring chemical levels.