In summary, the use of chemicals in municipal water treatment is indispensable in providing safe, clean drinking water to the public. From coagulants and disinfectants to pH adjusters and specialized treatments, a variety of chemicals work in tandem to meet stringent health standards and protect communities from waterborne diseases. Understanding these chemicals and their roles highlights the complexity of water treatment and the importance of maintaining a robust water supply infrastructure. As communities continue to grow, ongoing advancements in treatment technology and chemical application will be crucial to ensuring sustainable, high-quality water for all.