An institution of DVGW
Erlenmeyer flask with transparent liquid and coloured polymers
Sealed Erlenmeyer flasks with transparent liquid and different coloured polymers.

Projects

Our database contains all of TZW’s ongoing research projects and completed projects up to 2010. By filtering by category or time you can find the specific topic you’re looking for.

Our database contains all of TZW’s ongoing research projects and completed projects up to 2010. By filtering by category or time you can find the specific topic you’re looking for.

Project search

Reset filter
Practical approaches are needed for the evaluation of substances in drinking water that have not yet been evaluated or have only been partially evaluated. Image: LedyX on Shutterstock
Micropollutants
Concepts for the assessment of drinking water contaminants (GOW-OPTI)

In some cases, substances for which there are no established limit or guideline values are found in drinking water at very low concentrations. The German Environment Agency has developed comprehensive solutions for such cases, and we have…

Read more

The most problematic intrinsic substance property
Micropollutants
Assessing the degradation of chemicals in drinking water resources

For many substances detected in water resources there is no conclusive assessment of their intrinsic degradability. In cooperation with the German Federal Environmental Agency, TZW has developed recommendations for a simple and cost-effective…

Read more

Schematic structure of the KOLa System (continuous ozonation with slow sand filtration) (left); Effect-related investigation of spiked drinking water from Karlsruhe according to different enrichment methods (right) (Image: TZW und ZV Landeswasserversorgung /L. Betz)
Analysis
Effect-directed analysis and NTS for the evaluation of drinking water production processes

The WBA-NTS-ProTrink project was intended to further develop the approach developed in a previous project of using effect-ditected analysis in combination with chemical analyses to assess organic micropollutants.

Read more

Test stand for the determination of aluminum release from activated carbons
Treatment
Release of aluminium during installation of granular activated carbon adsorbers (Alu-Carbon)

Against the background of the discussion on the introduction of a parameter value for aluminium as a purity requirement for granulated activated carbons, a data basis was developed within the framework of the research project that enables an…

Read more

Preparation of extracts from soil samples
Resource protection
Impact of urease inhibitors on microbiology and groundwater quality

According to the fertilizer ordinance of May 26, 2017, urea may only be used as fertilizer "after February 1, 2020, if a urease inhibitor has been added to it or if it is applied immediately, but no later than four hours after application". Since the…

Read more

Laboratory lysimeter of the TZW
Resource protection
Input of nitrification and urease inhibitors into groundwater (INHIBIT)

Urease and nitrification inhibitors are frequently used in agricultural practice and, for example, as additives in liquid manure. In particular, urease inhibitors are expected to be used to a greater extent in the future due to new requirements of…

Read more

Word clouds on REACH and PMT substances (Image: Michael Neumann/UBA)
Analysis
Substances relevant for drinking water

The German Environment Agency and DVGW-Technologiezentrum Wasser (German Water Centre) have been highly active in determining the drinking water relevance of anthropogenic chemicals based on their intrinsic substance properties or from the data…

Read more

Analysis
Bisphenol A and nonylphenol study

Due to a lack of data, it has not yet been possible to assess whether the introduction of parameter values for BPA and NP will pose a challenge to the drinking water supply in Germany. The goal of this DVGW-funded research project (W 201833) was to…

Read more

Diagram of the project structure
Micropollutants
Fluorinated compounds from technical products in the paper industry

The aim of the project was to identify the sources and the extent of contamination with per- and polyfluoroalkyl substances (PFAS) in polluted areas in the Rastatt/Baden-Baden and Mannheim region.

Read more

Well on a golf course (source: German Golf Association, DGV)
Practical projects
Golf course maintenance and pesticide use

In the pilot project, a novel approach was developed to systematically assess the possible risks to groundwater caused by the active substances in pesticides and their metabolites as a result of golf course maintenance. The aim was to establish a…

Read more

Substances are derived from a population of water-relevant substances that are presumed to be of relevance to drinking water (Image: Shutterstock)
Micropollutants
Selection of priority substances that are relevant to water supply (hot target analysis)

The ever-increasing number of findings of organic substances (micropollutants) in surface water needs targeted prioritisation and selection of those substances that are relevant to water supply and potentially problematic. This was the aim of this…

Read more

Resource protection
Leaching of metabolites into groundwater

The issue of pesticide metabolites is presenting increasing challenges to water supply. The project aimed to record the presence of pesticide metabolites and the full metabolic and transfer behaviour in terms of active substances, soil quality,…

Read more

© 2025 TZW: DVGW - Technologiezentrum Wasser

Imprint Data Protection Policy T&C