Arklow is a town in County Wicklow on the southeast coast of Ireland. There were no wastewater treatment facilities in Arklow town and as a result, untreated wastewater was being discharged directly into the Avoca River. Irish Water, therefore proposed a development to provide an effective wastewater collection network, treatment capacity and treated effluent outfall that would improve water quality in the Avoca River. The outfall system comprises of a 630mm Outer Diameter pipeline 1km long to be constructed in close proximity to the existing port and other infrastructure.