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


Report on environmental technology in Denmark

Dive into the complexity of environmental technology. Our report gives you an overview of the 839 companies in the environmental cluster, operating across different value chains and industries. Gain a deeper understanding of the environmental technology ecosystem and its potential.

Read more

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

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


21. Nov 2023

DKK 195 million to help companies reduce their climate footprint


6. Oct 2023

Danish water technology to be acquired by US company

Billede af seks personer fra videnbroprojektet.

3. Oct 2023

Collaboration on PTFE handling and recycling

Personer der deltog i videnbroprojektet.

3. Oct 2023

New way to upcycle bread scraps into bioethanol


3. Oct 2023

Innovative technology can reduce CO2 in buildings


3. Oct 2023

Turn waste into homes – 3D printed houses reduce CO2 footprint


3. Oct 2023

MicroChange – FLOW was valuable for our startup


25. Sep 2023

Matchmaking opened a door to new markets for KIRT x THOMSEN

Billede af en container fyldt med planter til pilottest af regnbede.

18. Sep 2023

Microbiological Potential of Infiltration Beds


All events
  • DelegationNetwork


    13. Mar

    Smart City Insight: Korea and Copenhagen Exchange & Network

    Join us for an engaging evening of networking and insightful discussions centered around smart city initiatives: the Korea-Denmark Edition on March…

  • Conference


    19.–20. Mar

    Innovation Procurement Conference

    If you are a innovation procurement then this workshop and conference is interesting for you!

  • 2024

    22. Mar

    Take part in innovating new projects in Trace

    Join the mission and transition to a circular economy within plastics and textiles with your innovative ideas and research.

  • FundingProcess


    2. Apr

    International Funding for SMEs

    Get funding for international activities through this offer.

  • Workshop


    9. Apr

    Implementing Reuse Models & Food Packaging Take-back Initiatives

    Develop future projects and joint actions to implement reuse models and take-back systems for food packaging.

  • Workshop


    10. Apr

    Develop projects to increase the use of biobased material in packaging

    In this workshop, you will develop future projects and joint actions focusing on biobased plastic for packaging.

  • Workshop


    11. Apr

    Fostering Circular Plastic Packaging Design through Projects & Collaboration

    In this workshop, you will develop future projects and joint actions focusing on the circular design of plastic packaging.

  • Delegation


    22.–26. Apr

    Climate adaptation delegation to New York and Boston

    A 5-day trip will bring Danish companies, research institutes and cities working with Climate Adaptation to New York City and Boston.

  • ConferenceDelegation


    13.–17. May

    IFAT 2024

    Expand your opportunities in the European market at the world’s largest and most important trade fair in the environmental field.

  • Matchmaking


    21.–22. May

    Tech Tour Water Tech

    Join TechTour and see the most innovative water startups in the world in Aarhus!

  • 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.