What is the main purpose of flushing programs in a water distribution system?

Flushing programs in a water distribution system are primarily designed to remove sediment and biofilm that can accumulate in the pipes over time. Sediment build-up can lead to issues such as water quality degradation, taste and odor problems, and even reduced flow capacities. Biofilms can harbor harmful bacteria and affect public health.

By flushing, the system helps to clear these deposits, ensuring that the water remains clear and safe for consumption, thereby maintaining the overall integrity and functionality of the distribution system. This regular maintenance action is crucial for delivering high-quality water and helps in prolonging the lifespan of the pipelines by minimizing corrosive buildup.

The other options do not capture the primary objective of flushing programs, as increasing pipe pressure, reducing water usage, and repairing leaks serve different purposes within the water distribution system.