Definition
A sewer is an underground pipe or channel designed to carry wastewater and refuse away from buildings and homes. Think of it as the city's plumbing system, but on a massive scale. Sewers are essential for public health, preventing the spread of disease and keeping our environment clean. Unlike a drain that handles individual sinks or showers, a sewer connects many buildings. It's like the circulatory system of a city, removing waste. π€’ Without sewers, cities would be pretty gross. π§