The official EPOS community today is made up of 47 partners plus 6 associate partners from 25 countries from all over Europe and several international organizations (ORFEUS, EMSC, EUREF).
However, the community contributing to the EPOS integration plan is larger than the official partnership of EPOS IP project, because more countries are represented by the international organizations and because within each country there are several research institutions involved (see https://www.epos-ip.org/ride).
Several global initiatives also participate or follow the EPOS implementation as for example the Global Earthquake Model (GEM), the European Space Agency (ESA) and EuroGeoSurveys.
EPOS also participate in Group on Earth Observations (GEO) and collaborate closely with the US National Science Foundation initiatives such as the Incorporated Research Institutions for Seismology, UNAVCO, and EARTHCUBE.
The integration of the European solid Earth science community, both geographically and across Earth science disciplines, will be the backbone of the EPOS enterprise. For this reason, the EPOS community is open and inclusive.