Digital Learning Resources



Grey water

Greywater is all wastewater that is discharged from a house, excluding blackwater (toilet water).

Can we reuse it? Does it save money for households and institutes? What are technical and hygenic requirements of reuse? 


Digital learning resources


Rainwater collection

Harvesting rainwater for saving drinking water has gained enormously in significance as a modern water saving sanitary technique.


Digital learning resources


Water loss

Water loss occurs in every water distribution system during its overall lifetime and it causes not only additional operating costs but also has negative social and ecological impacts.
In urban areas, up to 70% of distributed water can be lost or never invoiced.


Digital learning resources


Water efficiency

Water efficiency is the reduced use of water possibly in all water consuming activities and sectors without comfort or functionality loss. It leads to significant savings in water and energy and to less wastewater production.


News and events


Make your day with our creative posters

Check out our beautiful and informative posters and learn more about how to save and reuse water at home and how the water circulates in the city.

Water in the city


Do we have to fear of grey water?

With the rapid pandemic spread of the novel coronavirus and its devastating health, economic and social impacts all over the globe, many concerns and uncertainties arise as to the safe reuse of recycled water and the potential transmission to humans.

The new publication of fbr gives clear picture on risks and required treatment. 


Silent Word Water Day 

22nd March is the World Water Day, a highlighted date in the City Water Circles project. 

The team had creative plans for this day but the pandemic in Europe caused by the COVID-19 erased our calendar.

Wash your hands

What we recommend instead of live events? Read our list.


CWC meets circular economy

CWC project was presented at the final conference of Interreg Alpine Space GREENCYCLE project on March 5th 2020 in Maribor, Slovenia.

CWC Greencycle

The event was hosted by Municipality of Maribor as presentation of best practices of circular economy and networking event.


Successful campaign in Split

The Croatian partner of CWC, RERA reported about successful local icebreaking campaign about the circular urban water management. Let's see some sparkling moments of the campaign. 

The witter of short quiz



Fruitful Kick-off in Budapest

NGOs, researchers, municipalities, journalists and local citizens were gathering in Budapest on the TRIP Boat to discuss the challenges of circular urban water usage. 

Ms. Rebeka Szabó, vice mayor of Zugló Municipality opened the event and underlined the frontrunner role of local municipalities in green investments. 

Budapest 1st meeting

Budapest 1st meeting


Circular water use in EU policy framework

The assay of the City Water Circles partner MBVOD gives an overview of the existing legislative framework on European level, and gives us a glimpse to the future: the proposal of the new European legislative document on water reuse is in the pipeline.

Water policy framework



Kick-off meeting Budapest June 2019

Under this box you find the former news of the City Water Circles project. 

Project duration

Start Date


End Date


Project Partners

City Water Circles project has 11 partners from 6 central European countries

Project in numbers






Pilot projects


Innovative urban strategies

Climate change induced hydrological risks are making central European cities increasingly vulnerable against urban floods and at the same time make the water scarcity problem worse. Coupled with growing drinking water consumption and consequently rising amounts of wastewater to be treated, this threatens the safety of future water supplies.

The CWC project aims to help municipalities to reform outdated urban water infrastructure systems via applying a circular economy approach, which offers many economic and environmental benefits. This will be achieved by the project by promoting a water saving culture, including the use of non-conventional water resources and by taking the lead in adopting urban rainwater harvesting and utilisation as well as greywater recovery measures on city level.

The partners join forces to create a knowledge base for urban circular water management. This will be made available as digital learning resources for all willing to learn more about the topic. The partners will also co-develop with local stakeholders a set of innovative methods and tools (cutting-edge technological and nature-based solutions, smart governance tools exploring novel cooperation and financing schemes) usable all around central Europe.