The Head Office, the regional and local offices, certification and testing bodies, research and training institutes and specialist committees of the DVGW all work together closely.
DVGW has shareholdings in the following subsidiaries and institutes.
85 % shareholding
100% shareholding by DBI GUT GmbH
A 100% subsidiary of wvgw GmbH
A quality management system according to DIN EN ISO 9001 applies as an ideal proof of competence and efficiency, nationally and internationally. As early as 2001, a quality management according to DIN EN ISO 9001 was established at DVGW and the organisation was successfully certified. The last recertification was in December, 2016.