The TZW co-operates with water works by doing joint research projects. The TZW supports the DVGW in development and transfer of the Technical Guidelines of the DVGW. Moreover, the TZW is contact point for authorities, ministries and associations in all questions concerning surface and ground water, drinking water and water technology. The TZW provides a link between the DVGW, the basic research at the universities and the water treatment companies. In his work the TZW has to fulfill the statute of the DVGW, requiring a strict independence and objectiveness.
The TZW was established from the DVGW-Research Institute at the Engler-Bunte Institute of the University of Karlsruhe in 1994. The TZW is located in Karlsruhe in the southern part of Germany. The Heinrich-Sontheimer-Laboratory and the department of material testing are situated in a waterworks of the Stadtwerke Karlsruhe, a local supplier of drinking water. Moreover the TZW has branch offices in the towns Dresden and Hamburg. The TZW has about 150 employees.
The TZW is involved in all questions concerning water chemistry, water technology, microbiology, site management, groundwater and soil, material testing, corrosion and distribution systems.
The TZW is initiator and member of several national and international joint research projects with subsidy from the DVGW, the German Ministry of Research and Education, the European Union and others.
The TZW is a member of the Global Water Research Coalition (GWRC) and the association of European Water Research Institutes (EWRI) providing a platform for co-operation in the field of international water research.