What is the role of filtration in water treatment?

Filtration plays a crucial role in water treatment, particularly in controlling the growth of algae and protozoa. These organisms can proliferate in water supplies, leading to potential health risks and concerns about water quality. Through the filtration process, water is passed through various media that can physically remove particles, including algae and protozoa, thus ensuring the water is safer for consumption and use.

While filtration can aid in enhancing the taste of water by removing certain impurities and can also help in reducing the concentration of some chemical contaminants, its primary role includes the removal of microorganisms, including algae and protozoa. This makes it essential in preventing outbreaks of waterborne diseases and maintaining the overall integrity of the water supply. The assertion that filtration is only for bacteria overlooks its broader effectiveness against various types of microorganisms present in raw water.