A talk about data quality, how it is understood and if visualization can improve the understanding of data quality. A lot of focus has been put on data quality and methods of accuracy assessment. Most of these methods are however statistical. The focus here is on how users and producers view uncertainty and a view into what is the current reality especially relating to the statistics that are presented. A research based section deals with uncertainty perceptions specifically in South Africa but also related to international literature. A tool (QGIS plugin) for uncertainty visualization in continuous raster datasets is also shown. Finally there is a brief demonstration of how visualization can aid in showing the results of uncertainty in data that is put through a model. Thus giving a visual example of the power of visualization.