Why is flushing hydrants necessary in water systems?

Flushing hydrants is a crucial practice in water systems primarily because it helps remove contaminants such as biofilms, iron, and manganese from the pipelines. Over time, these materials can accumulate within the distribution system, potentially affecting water quality and taste. Flushing hydrants introduces a strong flow of water, which helps dislodge and carry away these unwanted deposits, thereby maintaining the integrity of the water supply.

Moreover, this process ensures that the water remains clear, safe, and palatable for consumers. Without regular flushing, contaminants can build up and lead to issues such as discoloration, unpleasant tastes, and even health concerns. Therefore, the practice of flushing hydrants is essential for ensuring a clean and safe drinking water supply, which directly addresses the goal of maintaining public health standards in water systems.