What is the main reason for flushing water mains?

Flushing water mains is primarily conducted to remove sediment and improve water quality. Over time, minerals, organic material, and other particulate matter can accumulate in the water distribution system, which can lead to discoloration, unpleasant tastes or odors, and potentially harmful bacteria or contaminants. Flushing helps to dislodge and wash away these sediments, ensuring that the water remains clean and safe for consumption. This practice also helps to maintain the system's effectiveness by improving water flow and reducing the risks of stagnation-related issues.

While increasing water pressure, testing for leaks, and replacing old pipes are important activities in water distribution management, they are not the main purpose of flushing. Flushing is explicitly aimed at enhancing water quality by maintaining the cleanliness of the water being delivered to consumers.