GAERWEN STW - Secondary Wastewater Treatment Plant, Isle of Anglesey, Wales

GAERWEN STW is a wastewater treatment plant located in Pont Bulkeley, Llanfihangel Ysgeifiog, on the Isle of Anglesey (Ynys Môn), Wales. The plant serves a population of approximately 2,692 people, classifying it as a small agglomeration under UK wastewater regulations. The plant provides secondary treatment, which is the standard level required for discharges into coastal waters under the Urban Waste Water Treatment (England and Wales) Regulations. With a designed capacity of 2,885 cubic meters per day and a discharge volume of 599.33 cubic meters per day, the plant operates well within its capacity. The treated effluent is discharged into local watercourses that ultimately flow into the Irish Sea. The Isle of Anglesey is an ecologically sensitive area, supporting diverse marine life and important coastal habitats. The plant's operation helps protect the local environment from untreated sewage pollution.

GAERWEN STW discharges treated wastewater into local streams that drain into the Menai Strait and eventually the Irish Sea. The Isle of Anglesey features diverse coastal ecosystems, including salt marshes and rocky shores, which support seabirds, marine mammals, and fish populations. The plant's secondary treatment reduces organic pollutants and protects these sensitive habitats.