What is the purpose of passing fresh water through filter beds?

Passing fresh water through filter beds is primarily aimed at removing insoluble particles, which is essential for ensuring that the water is clean and safe for consumption. Filter beds typically consist of layers of materials such as sand and gravel that physically trap and retain solid impurities and sediments. This process is crucial in water treatment facilities because removing these particles helps prevent health risks and also improves the aesthetic quality of the water.

In contrast, adding flavor is not a function of the filtration process, nor is the aim to increase water temperature or enhance mineral content. The filtration process is focused on purification rather than alteration of sensory characteristics or nutrient levels. This makes the removal of insoluble particles the correct and relevant purpose of using filter beds in water treatment.