Circular Water System

Demonstrator Project supported by EIT Climate KIC


Bluebloqs Circular Water System Demonstrator project

Supported by EIT Climate KIC, Bluebloqs offers an innovative solution for decentralised water supply in urban areas.

Innovative bio-filtration and deep infiltration techniques are combined through an integrated system for stormwater collection, treatment, storage and reuse.

The system requires a minimum use of space, avoiding conflicts with other functions: a compact bio-filtration system is spatially fitted as a green feature, and the purified water is stored in the aquifers in the subsurface, from where it can be recovered for different urban applications: e.g. irrigation, industrial processes or combating urban heat.


If we tell you that freshwater is the most valuable asset on earth, would you agree?

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. But because of climate change and rapid population growth, cities are challenged to keep the water cycle in balance.

Bluebloqs has the potential to transform the entire urban water infrastructure into a decentralised grid of circular water systems. By 2030, the urban water demand will be supplied by a portfolio of local water sources, powered by nature.

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 makes cities climate resilient

Stree by street

This circular water system has the potential to generate water resources within the urban fabric, ensuring you green parks, great sporting pitches every season, and good quality water for industrial use

Climate KIC Partners

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

TU Delft




Field Factors


  • 12/12/2019 02:29 PM

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

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  • 1/11/2017 12:00 AM

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

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  • 30/09/2017 12:00 AM

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

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  • 30/05/2017 12:00 AM

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

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  • 30/04/2017 12:00 AM

Large scale system at neighbourhood level (15 ha) in low land in Netherlards

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Stakeholders involved

EIT Climate KIC

Delft Land Municipality

Vlaamse Municipality

Someren Municipality

Katholieke Universiteit Leuven

KWR Watercycle Research Institute

Den Haag Municipality


Madrid Municipality

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Bluebloqs Circular Water Systems

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