The demands on the integrity and interoperability of data in maintenance are constantly increasing. For many enterprises,achieving these demands in their operation and maintenance processes is challenging. In order to enable informationexchange between systems and their actors, using effectively andefficiently usable way, there are two essential issues which need to be addressed: i) content structure - which addresses with the description of the content’s inherent elements and also the relationship between these elements; and ii) communication interface – which addresses the interface through which each specific content will be exposed.

There are a lot of eMaintenance ontologies which may help to solve these issues.The aim of this paper is to: i) explore the main ontologies related to eMaintenance solutions and to inspect how Data Quality (DQ) aspect is considered within these ontologies; ii) propose a process called “Maintenance Data Production” and to find the relation between ontologies and their role during data production stages.