DRONGAN STW - Secondary Wastewater Treatment in Coylton, Scotland

DRONGAN STW is a wastewater treatment plant located in Hillhead, Coylton, South Ayrshire, Scotland. It serves a population of approximately 4,400 and is situated within 10 km of the coast, reflecting its role in managing wastewater from a small community in a coastal setting. The plant provides secondary treatment, a standard level for UK facilities of this scale. With a designed capacity of 5,000 cubic meters per day and a discharge volume of around 980 cubic meters per day, it operates well within its capacity. As a UK plant, it is subject to the Urban Waste Water Treatment (Scotland) Regulations, which transpose the EU Urban Waste Water Treatment Directive, requiring secondary treatment for discharges to coastal waters. The treated effluent is discharged into the local water environment, ultimately reaching the Firth of Clyde, a major sea inlet on Scotland's west coast. This coastal discharge supports the ecological health of the area, which includes diverse marine habitats and important fisheries.

The plant's discharge enters local watercourses that drain into the Firth of Clyde, a large sea inlet connected to the North Atlantic. The Firth supports diverse marine life, including commercial fish stocks and seabird colonies. As a coastal plant, DRONGAN STW must ensure its secondary treatment meets standards to protect these sensitive marine ecosystems from nutrient enrichment and pollution.