Methodological guidelines and tools

Our library of tools and guidelines, designed to help you define your own pathway to water recycling, from basic groundwork to advanced planning.

IN THE LOOP – our three-edition guide to get started with water recycling.

Edition 1: Rethinking water – and getting started together

Edition 2: From vision to action – time to show what works

Edition 3: Coming soon… Stay tuned by signing up to IN THE LOOP here

Planning tools for preparing water recycling measures

The Extreme Weather Layer (EWL) is a spatial planning and GIS-based tool used in to simulate stormwater system responses to intense rainfall and flooding. It maps flood risks and identifies locations for nature-based solutions (NBS) or grey infrastructure upgrades to enhance city climate resilience, incl. water recycling measures like raingardens or stormwater retention ponds / multi-dams. It was developed by the NOAH project, and further refined within the WaterMan project.
Go to Extereme Weather Layer

The QMRA Tool by KWB is designed to support Quantitative Microbial Risk Assessment (QMRA) for human health in the context of water recycling. Whether you’re evaluating the safety of treated wastewater or other reclaimed water sources, this tool helps you to assess potential health risks associated with microbial contaminants. The tool was developed by the Berlin Centre of Competence for Water (KWB), inter alia within the WaterMan project, and is completely free to use.
Go to QMRA Tool

Recommendations for rolling out water recycling in the Baltic Sea Region

These hints represent the hands-on perspective of practitioners from municipalities & local water companies that worked together within the WaterMan project from Jan 2023 to Dec 2025. They are based on practical lessons learnt in the course of creating real-world pilot measures, elaborating  feasibility studies, as well as drafting local & regional strategies for water recycling. Guiding questions were: What can other municipalities & water companies in the Baltic Sea Region learn from the experiences made within the WaterMan project for getting started with water recycling? How could they be more effectively supported by regional & national authorities as well as the EU in this context?
Download the recommendations

Water Recycling PR Toolkit

The following materials are free to use by anyone who intends to promote water recycling around the Baltic Sea – or any other humid regions in Europe and other parts of the world.

Infographics for explaining water recycling in theory & practice

• Water recycling in the Baltic Sea Region
• Visualisations of specific use cases of water recycling

Videos for introducing water recycling & its benefits:

• Introduction to water recycling in the Baltic Sea Region
• Real-world examples of water recycling in the Baltic Sea Region

Videos on typical use cases of water recycling in humid areas:

•   …coming soon….

Articles on typical use cases and regional pathways of water recycling:

•   …coming soon….