North Coast WwTW

Northern Ireland

Design and construction (by Biwater GRAHAM JV) of a new treatment works at Craigtown More, construction and refurbishment of twelve pumping stations, installation of pipelines between the pumping stations and the new treatment works, and construction and refurbishment of outfalls.

The scheme will rationalise the existing sewerage systems and reconfigure the network so that waste water from the urban areas of Castlerock, Articlave, Coleraine, Portrush and Portstewart will be collected and transferred to a new two-stage treatment works at Craigtown More - a greenfield site between Portrush and Portstewart.

The waste water will be treated to a much higher standard before being discharged offshore through a new long sea outfall pipe, where the depth and natural currents will provide effective dispersion.

In addition, the North Coast scheme involves the laying of some 24 kilometres of pumping mains and gravity sewers along with the construction of eight new pumping stations. Five existing pumping -stations will be refurbished with other ancillary upgrades made.

The scheme is a design and build contract and has been divided into four packages of work.