Larsen successfully tendered for the rehabilitation of eight, existing underground service reservoirs across the Southern Region (Tyrone, Armagh, Down) which involved the provision of watertight, potable water structures. The objective of the refurbishment works were to extend the life of the structures by fifteen years to first maintenance through concrete repair and the application of protective coatings. Repair and coating works were carried out with DWI approved materials for all internal works.