Circular Water System

Demonstrator Project supported by EIT Climate KIC

About bluebloqs

A Nature-based Solution to create water reserves in urban areas

About bluebloqs
If we tell you that fresh water is the mos precious resource on earth, would you agree?

Climate change is alarmingly affecting the rain cycles, causing an increase in droughts and floods around the world, something that are challenging to keep the water infrastructure uptime.

Healthy urban water systems are fundamental for our lives. We need them to secure food and drinking water production, clean air, social and economic welfare, even for our health and happiness.

Our solution for rainwater managing is Nature-based, and it's designed to mitigate the impacts of droughts and floods at the same time as it allows the generation of water within the urban fabric of cities.

Bluebloqs Circular Water System Demonstrator project is supported by EIT Climate KIC.

An innovation powered by nature

Bluebloqs is compact system for rainwater collection, treatment, atorage and reuse in urban areas, with the aim to catalyze the urban transition towards circular water systems, making cities climate-resilient. The essence of the Bluebloqs technology is:

• Collection of stormwater run-off from paved surfaces, such as roofs, streets and parking. • Retention measures at ground level to temporary retain the collected stormwater. • Treatment of the collected stormwater by means of bio-filtration techniques within Bluebloqs Biofilter. • Storage of the purified water in the deeper sand layers via infiltration wells. • Reuse of the infiltrated water for different applications, such as irrigation of sport fields and urban green, industrial processes or reducing heat stress

Bluebloqs - From linear to circular urban water systems

By 2100 the entire urban water infrastructure could be transformed into grids of decentralised circular water systems. In the future, the urban water demand will be supplied by local water sources including stormwater, surface water, grey water and wastewater, gradually upgrading the current discharge and supply networks.


Cromvlietpark | Den Haag | The Netherlands

A full-scale Bluebloqs pilot will be installed at the Cromvliet park in The Hague.

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Madrid (Spain)

Research on the system efficiency (1st prototype in Spain)

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SOMEREN (Netherlands)

Large scale system at neighbourhood level (12 ha) in sandy soils

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Aarteselaar (Belgium)

Research on the system efficiency (1st prototype in Belgium)

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Climate KIC Partners

A consortium formed by Delft University of Technology, Aquafin, and the Technical University of Madrid in collaboration with KU Leuven, KWR Water, Field Factors, I-Catalist, and the Municipalities of Madrid, Someren, and Pijnacker-Nootdorp, will collectively work in a two-year program to test and showcase the upscaling potential of this innovation in Europe.


TU Delft

Universidad Politécnica de Madrid


Field Factors

Stakeholders involved

EIT Climate KIC

Madrid Municipality

Delft Land Municipality

City of Rotterdam

Someren Municipality

Den Haag Municipality

Vlaamse Municipality

KWR Watercycle Research Institute

Katholieke Universiteit Leuven


Waterschap Aa en Maas

Twitter Tweets

How to equip our cities to handle climate change? #Bluebloqs' main goal is to collect, purify, infiltrate, and reus…


Groundwater reserves are subject to many pressures due to their increasing use in Madrid city (larger population co…


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Bluebloqs Circular Water Systems

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