Strathpeffer WWTP - Secondary Treatment Plant in Strathpeffer, Scotland

Strathpeffer WWTP is a municipal wastewater treatment facility located in the village of Strathpeffer in the Highland region of Scotland, United Kingdom. The plant serves a population of approximately 1,537 residents and is situated near the A834 road in Blairninich. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater before discharge. The plant operates under the regulatory framework of the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which is transposed into Scottish law via the Urban Waste Water Treatment (Scotland) Regulations. For agglomerations with a population equivalent between 2,000 and 10,000, secondary treatment is the standard requirement. Although the plant's designed capacity is 3,000 m³/day, the actual discharge volume is 342.19 m³/day, indicating a utilization rate well below capacity. The treated effluent is discharged into a local watercourse that eventually drains into the Cromarty Firth, a coastal inlet of the North Sea. The Cromarty Firth is an ecologically important area that supports diverse marine life, including seals and seabirds. The plant's proximity to the coast (within 10 km) means that its discharge must meet stringent standards to protect the sensitive coastal environment.

The treated wastewater from Strathpeffer WWTP is discharged into a local stream that flows into the Cromarty Firth, a sea inlet of the North Sea. The Cromarty Firth is a designated area of ecological importance, supporting diverse aquatic life such as salmon, otters, and migratory birds. The plant's coastal location requires careful management to prevent nutrient enrichment and protect the marine ecosystem.