hulevesiviemäriä

Hulevesiviemäri is a Finnish term referring to a stormwater sewer system, also known as a surface water drainage system or storm drain. Its primary function is to collect and transport rainwater and other surface runoff away from urban and developed areas. This system prevents flooding by directing water from streets, rooftops, paved surfaces, and other impervious areas into a network of pipes, ditches, and channels.

The collected stormwater is typically discharged into nearby rivers, lakes, or the sea. Unlike wastewater sewer systems that carry sewage from buildings, hulevesiviemäri systems are designed to handle large volumes of water that can occur during rainfall events. The design and capacity of these systems are crucial for effective flood management, especially in areas prone to heavy precipitation.

Maintenance of hulevesiviemäri systems is important to ensure they remain functional. Blockages caused by debris, sediment, or litter can impede water flow and lead to localized flooding. Therefore, regular cleaning and inspection are often part of municipal infrastructure management. In some cases, stormwater may undergo treatment before discharge to remove pollutants picked up from surfaces, though this is less common than in wastewater systems. The concept is vital for urban planning and maintaining the usability and safety of developed landscapes.