In many jurisdictions (e.g., UK under the 2011 Water Industry Act), the homeowner is responsible for the drain from their house up to the property boundary or the connection to the shared sewer. Beyond that, it's the water company's responsibility. Blockages in shared drains (serving multiple properties) are often the water company's problem. Always check your local regulations.
Outdoor drainage systems are the unsung heroes of property maintenance. Designed to handle vast amounts of water from rainfall, roofs, and household appliances, they protect the structural integrity of a building. When an outside drain becomes blocked, it can quickly escalate from a minor nuisance to a major emergency, causing structural damage and health hazards. blocked outside drains