RA4 Ase Wastewater Treatment Plant, Ålesund, Norway

RA4 Ase is a municipal wastewater treatment plant located in Ålesund, Møre og Romsdal, Norway. Serving a population equivalent of 18,438, the plant is part of the region's wastewater infrastructure, handling domestic sewage from the urban area. The plant is situated near the Borgundfjord, a fjord that connects to the Norwegian Sea. As a Norwegian facility, RA4 Ase operates under the national regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations with a population equivalent between 10,000 and 150,000, the directive requires secondary treatment as a minimum. Norway, as an EEA member, adheres to these standards, ensuring that the plant provides appropriate treatment before discharge. The treated effluent from RA4 Ase is discharged into the local water environment, likely the Borgundfjord, which is part of the larger fjord system leading to the Norwegian Sea. This coastal discharge requires careful management to protect marine ecosystems, including fish stocks and benthic habitats. The plant's location within 50 km of the coast underscores its role in safeguarding the sensitive coastal waters of western Norway.

RA4 Ase discharges treated wastewater into the Borgundfjord, a fjord that flows into the Norwegian Sea. This coastal environment supports diverse marine life, including fish populations and seabird colonies. The fjord's waters are influenced by tidal exchanges and freshwater inputs, making them ecologically sensitive to nutrient loading and pollutants. Proper treatment is essential to maintain water quality and protect the downstream marine ecosystem.