Geomatic is assisting the Sewerage Board of Nicosia on the organization of the geographical data of the Board. This organization involves the georeference of vector (CAD) and raster data in one central GIS database. The discretization, grouping and homogenization of the Board’s data (manholes, sewer lines, house connections etc.) generate this central GIS database. One of the applications of this database is the provision of accurate navigation to each manhole for inspection using Garmin GPS devices and the implemented Manholes POI library.