Clean is the innovation space for those who develop and need to solve water and environmental challenges.

Find events How we work

Clean is The Danish Water and Environmental Cluster and our vision is for Danish companies to be world leaders in the water and environmental field. We are the innovation space for both those who develop water and environmental solutions and those who need to solve water and environmental challenges.

How we work


1.7 million DKK for tracking and digital analysis of micro- and nanoplastics in seawater

Clean is part of a new Interreg project PLASTTRACK, which aims to find solutions to identify plastics in the ocean in close collaboration with industry.

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The water and environmental technology sector

71.000 +

full-time jobs in the sector, of which 49,171 jobs in water and environmental technology companies

165,2 B

DKK 119.1 billion in turnover in the cluster, of which DKK 119.1 billion in water and environmental technology companies

57,4 B

DKK in exports, of which DKK 52.8 billion in water and environmental technology companies

3.7 %

of the whole Danish export comes from the water and enviornmental sector

9.700 +

scientific articles published regarding water and environmental technology from 2018 to 2023


water and environmental technology companies in Denmark

The Danish Water & Environmental Cluster

Clean membership


You can expect concrete activities tailored to promote innovation in your company.

New markets

You can explore new markets and expand your company’s international presence.


You’ll have the opportunity to meet your next customer, supplier, investor, or business partner.


As a member, you get access to unique research and the opportunity to shape the future of water and environmental technology knowledge.


We showcase our members nationally and internationally and share your company’s success stories.


You’ll have access to a wide portfolio of projects in areas such as circular economy, water, waste and resources.

Latest news

All news

19. Jun 2024

Solum: Robotic sorting provides up to 90% clean waste fractions for recycling


7. Jun 2024

Tighter legislation against PFAS opens up new innovation opportunities


17. May 2024

Eight new knowledge bridge projects approved for testing and demo of environmental technology solutions


15. May 2024

Updrift Copenhagen: Sustainable climate adaptation


15. May 2024

Three members of Clean receive funding for international opportunities


17. Apr 2024

Clean is once again host for Tech Tour with over 45 investors


2. Apr 2024

Seven Danish companies receive funding for international activities


20. Mar 2024

EWA Sensors: A simple sensor with complex data


13. Mar 2024

DKK 800,000 awarded to projects focusing on water and environmental technology solutions


27. Feb 2024

TheNewSort: LOOP makes a difference for Startup


13. Feb 2024

The future of carbon capture – Preventing by-products of amine-based CO2 capture


8. Feb 2024

Kleen Hub: A local solution with a global impact on single-use waste

Clean og Danish Export Association indgår afalte om større samarbejde. Fra venstre: Scott Allison (Clean), James Armour (Clean), Ilse Korsvang (DEA) og Klaus Kattenhøj (DEA). (c) Clean

30. Jan 2024

Clean and Danish Export Association unite to boost Danish solution exports


19. Jan 2024

Five SMEs receive funding for international partnerships


All events
  • Process


    12.–25. Aug

    Advanced Water Cycle Management Course

    The Advanced Water Cycle Management Course is an international course designed to upgrade your water management skills.

  • Funding


    27. Aug

    Procurement of Treatment of Diaper Waste

    The City of Copenhagen (Københavns Kommune) and the municipality of Frederiksberg (Frederiksberg Kommune) are about to procure the service of diaper…

  • ConferenceProcess


    11.–12. Sep

    TechBBQ 2024

    Do not miss out on Scandinavia’s largest innovation and startup conference TechBBQ in Lokomotivværkstedet, Copenhagen, 11-12 September 2024.

  • 2024

    23. Sep

    Attract engineers and developers

    Find your next employee with our talent attraction campaign

  • ConferenceDelegation


    15.–18. Oct

    Water & Waste Technology Export Delegation to India

    You can now apply to join a 4-days business trip to IFAT in India

  • Theme day


    31. Oct

    Sustainable product development of electronics and materials

    Following up on the success from last year, we are happy to announce this year’s conference on sustainability.