Leidarhofdi Hofn Wastewater Treatment Plant, Höfn, Iceland

Leidarhofdi Hofn is a municipal wastewater treatment plant located in Höfn, a town in the Sveitarfélagið Hornafjörður municipality in southern Iceland. The plant serves a population of approximately 1,500 residents and operates with secondary treatment, which is typical for small coastal communities in Iceland. Secondary treatment at this facility involves biological processes to reduce organic matter and suspended solids before discharge. The plant treats an average daily flow of about 402 m³, consistent with the scale of the community. Icelandic wastewater regulations require adequate treatment to protect the sensitive coastal and marine environment. The treated effluent is discharged into the coastal waters near Höfn, which ultimately flow into the North Atlantic Ocean. The area supports diverse marine life, including fish stocks and seabird populations. Proper treatment helps minimize nutrient loading and protects the ecological health of the fjord and downstream marine habitats.

The plant discharges into the coastal waters of Hornafjörður, a fjord system that opens into the North Atlantic Ocean. This region supports important fisheries and marine biodiversity, including cod and haddock stocks. Secondary treatment reduces organic pollutants and nutrients, helping to prevent eutrophication in the fjord and maintaining water quality for downstream ecosystems.