Olmanas arv Wastewater Treatment Plant, Hallands län, Sweden

Olmanas arv is a wastewater treatment plant located in Hallands län, Sweden, serving a population of approximately 8,289. The facility is situated near the coastal town of Viken in Kungsbacka municipality, within the Halland County region. As a municipal plant, it plays a key role in managing wastewater for this community. The plant operates under Sweden's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For a population of this scale (approximately 8,300 people), the directive requires secondary treatment as a minimum, with additional nutrient removal if discharging into sensitive areas. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating it is sized appropriately for the served population. The treated effluent from Olmanas arv ultimately reaches the Kattegat, a sea area between Sweden and Denmark, via local streams and rivers. This coastal discharge necessitates careful management to protect marine water quality. The plant contributes to safeguarding the ecological health of the region's coastal waters, which support diverse aquatic life and are important for recreation and fisheries.

Olmanas arv discharges into the local watershed that drains into the Kattegat, a sea area of the North Atlantic. The Kattegat is a sensitive marine environment supporting diverse fish populations and migratory bird species. The plant's coastal location means its effluent must meet stringent nutrient removal standards to prevent eutrophication and protect the ecological balance of these waters.