Drains are systems designed to remove excess water and waste from various environments, such as homes, streets, and industrial areas. They help prevent flooding and maintain hygiene by directing water away from buildings and public spaces. Common types of drains include storm drains, which handle rainwater, and sewage drains, which carry wastewater from toilets and sinks. Drains typically consist of pipes, grates, and channels that guide water to treatment facilities or natural bodies of water. Proper maintenance is essential to ensure they function effectively, as blockages can lead to overflows and environmental issues. Regular cleaning and inspections help keep drains in good condition.