Which of the following methods is commonly used to remove suspended impurities from water?

Filtration is the process of passing water through materials that trap solid particles. Sand, cloth, or special filter papers catch suspended dirt and impurities as water flows through.

Distillation removes dissolved substances by boiling water, while chlorination and fluoridation add chemicals to water. These methods serve different purposes than removing suspended particles.

Water treatment plants use filtration as a primary step to remove visible dirt, sand, and other floating materials. This makes the water clearer before further treatment with chemicals.