Why is sewage treatment synonymous to water treatment?

Sewage treatment is often synonymous with water treatment because both processes aim to clean and purify water for safe use. Sewage treatment specifically focuses on removing contaminants from wastewater, which is essential for protecting public health and the environment. In broader terms, water treatment encompasses various processes, including the treatment of natural water sources, to ensure that all water is safe for consumption and ecological balance. Thus, sewage treatment is a critical component of overall water treatment practices.