Water filtration is a critical part of water treatment, ensuring the water we use daily is safe and clean. It involves several stages, where water passes through various types of filters like sand, gravel, and activated carbon. Each filter plays a specific role: sand and gravel remove larger particles, while activated carbon tackles chemical contaminants and absorbs impurities. Additionally, some systems use advanced technologies like UV light or reverse osmosis to eliminate harmful microorganisms and smaller particles. This multi-step process is vital in providing us with water that meets health and safety standards, making it suitable for drinking, cooking, and hygiene.