Sundre avlopsanlegg det gamle anlegget - Closed Advanced Treatment Plant in Ål, Buskerud, Norway

Sundre avlopsanlegg det gamle anlegget is a former wastewater treatment plant located in Ål, Buskerud, Norway. The plant is now closed and no longer operational. It was situated in a rural inland area of southern Norway, serving the local community. The plant provided advanced treatment, which is typical for Norwegian facilities in sensitive areas. Norway's implementation of the EU Urban Waste Water Treatment Directive requires advanced treatment for discharges into sensitive water bodies. Although the plant is closed, its treatment level reflects the high environmental standards applied in the region. The plant's receiving waters are part of the local watershed, which drains into the Hallingdalselva river system and eventually into the Drammensfjord, an arm of the Oslofjord. This area supports diverse aquatic life and is important for recreation and fisheries.

The plant's treated effluent would have entered the local watershed, flowing into the Hallingdalselva river, which drains into the Drammensfjord and ultimately the Oslofjord. The Oslofjord is a ecologically sensitive marine environment that supports diverse aquatic life, including fish and bird populations. The advanced treatment level would have helped protect downstream water quality.