Overview
Holmestrand avlopsanlegg serves approximately 14,000 people in Holmestrand, Norway. The plant discharges into the local watershed, ultimately draining into the Oslofjord.
Holmestrand avlopsanlegg is a municipal wastewater treatment plant located in Holmestrand, Vestfold, Norway. It serves a population of about 14,000, placing it in the medium agglomeration category under Norwegian regulations. The plant is situated near the coast, within 50 km of the Oslofjord. As a Norwegian facility, the plant operates under national regulations that implement the EU Urban Waste Water Treatment Directive (91/271/EEC) through the EEA Agreement. For agglomerations of this size, secondary treatment is typically required, with more advanced treatment if discharging into sensitive areas. The treated effluent is discharged into the local water system, which flows into the Oslofjord, a significant fjord and marine environment. The Oslofjord supports diverse aquatic life and is an important recreational and ecological area. The plant's location near the coast means that its discharge can impact coastal water quality, making proper treatment essential for protecting the fjord's ecosystem.
Environmental context
The plant discharges into the local watershed that drains into the Oslofjord, a large fjord on Norway's southeast coast. The Oslofjord is a critical marine environment supporting fish populations, seabirds, and benthic habitats. As a coastal discharge, the plant's effluent can influence nutrient levels and water quality in the fjord, particularly in the inner reaches where water exchange is limited. The area is also used for recreation and fishing, underscoring the importance of effective wastewater treatment.
Frequently asked questions
Holmestrand avlopsanlegg is located at Næskilds gate 12 in Holmestrand, Vestfold, Norway. It serves the municipality of Holmestrand.
The plant serves approximately 13,988 people, classifying it as a medium-sized agglomeration under Norwegian and EU regulations.
The treated wastewater is discharged into the local watershed, which ultimately drains into the Oslofjord, a major fjord on Norway's coast.
Norway implements the EU Urban Waste Water Treatment Directive (91/271/EEC) through the EEA Agreement. For agglomerations of about 14,000 people, secondary treatment is typically required, with possible additional nutrient removal if discharging into sensitive areas like the Oslofjord.
Plants of this scale in Norway generally provide secondary biological treatment, and may include phosphorus removal to protect sensitive water bodies. It meets national standards under the directive.
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