Overview
Stornoway Holm WWTP serves 12,426 people in Tolm, Scotland, discharging treated wastewater into the local coastal environment under the EU Urban Waste Water Treatment Directive.
Stornoway Holm WWTP is a municipal wastewater treatment facility located in Tolm, on the Isle of Lewis in the Outer Hebrides, Scotland. It serves a population of approximately 12,426, making it a medium-sized agglomeration in a remote island setting. The plant is situated near the coast, reflecting the maritime character of the region. As a Scottish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges into coastal waters for agglomerations of this size. This suggests the plant is appropriately scaled for its population. The regulatory framework ensures compliance with environmental standards. The plant discharges into the surrounding marine environment of the Minch, a sea channel between the Outer Hebrides and mainland Scotland. This area supports diverse marine life, including seabird colonies and fish populations. The treated effluent contributes to the overall water quality of the coastal waters, which are important for local fisheries and tourism.
Environmental context
Stornoway Holm WWTP discharges into the Minch, a sea channel that connects the Atlantic Ocean to the North Sea via the Pentland Firth. The Minch is an ecologically sensitive area supporting rich marine biodiversity, including seabird colonies, seals, and commercially important fish species. The plant's coastal location means its discharge must meet strict standards to protect the fragile island ecosystem.
Frequently asked questions
Stornoway Holm WWTP is located in Tolm, on the Isle of Lewis in the Outer Hebrides, Scotland, United Kingdom.
The plant serves a population of approximately 12,426 people, classifying it as a medium-sized agglomeration under EU regulations.
The plant discharges treated wastewater into the Minch, a sea channel between the Outer Hebrides and mainland Scotland, which ultimately connects to the Atlantic Ocean.
As a Scottish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for coastal discharges from agglomerations of this size.
Under the EU UWWTD, plants serving between 10,000 and 150,000 population equivalent in coastal areas typically require secondary treatment to protect marine environments.
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