Municipal sewer systems are networks designed to transport wastewater from homes, businesses, and industries to treatment facilities. These systems consist of pipes, pumps, and treatment plants that work together to manage and process sewage, ensuring that it is safely removed from urban areas. The primary goal of municipal sewer systems is to protect public health and the environment by preventing contamination of water sources. Properly functioning systems help reduce the risk of flooding and pollution, making cities like New York and Los Angeles cleaner and safer for residents.