Clicking on gas or water, respectively, will show all rules on gas or water. Instructions for the ordering process can be found here. The DVGW counts about 14,000 members and is the technical and scientific association of the gas and water industry. For more than 150 years, the DVGW has been setting the technical standards for the safe and reliable supply of gas and water.
Being free from any economic lobbyism as well as being a non-profit-making, neutral association, the DVGW ensures transparent rule-making processes.