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

Coming soon

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

17. Apr 2024

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


20. Mar 2024

EWA Sensors: A simple sensor with complex data


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


11. Dec 2023

New visual identity for the Danish Water and Environmental Cluster


All events
  • Webinar


    30. May

    Funding innovation through public procurement

    Designing public procurement to optimize the benefits of both public authorities and small and medium sized companies.

  • Webinar


    31. May

    Dialogue meeting on plastic and circular economy

    Join us and listen to actors having applied and offering innovative solutions to avoid/reduce/reuse/recycle plastic waste.

  • Conference


    11.–12. Jun

    INNO-CCUS annual meeting

    Clean, in collaboration with INNO-CCUS, invites Danish SMEs to the INNO-CCUS annual meeting – we have entered into a collaboration that can…

  • Workshop


    11. Jun

    Micro and nanoplastics imaging – from classic to innovative methods

    Micro- and nanoplastics are fragments smaller than 1 millimeter and have become a major global environmental challenge in recent years. To improve…

  • 2024

    13. Jun

    The benefits of public buyers’ collaboration

    Public procurement is increasingly seen and used by public buyers to drive green, resilient, and inclusive development – We dive into how this can be…

  • Funding


    21. Jun

    Boost of Innovative Ideas for Circular Infrastructure

    Application Deadline: June 21, 2024, at 12:00 (noon) Project duration: Minimum 6 months, Maximum 2 years. Projects must end before 31/3-2027 Total…

  • 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.

  • ConferenceProcess


    11.–12. Sep

    Become an exhibitor at TechBBQ 2024

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

  • 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