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.
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
839
water and environmental technology companies in Denmark
The Danish Water &
Environmental Cluster
Clean membership
Innovation
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.
Network
You’ll have the opportunity to meet your next customer, supplier, investor, or business partner.
Knowledge
As a member, you get access to unique research and the opportunity to shape the future of water and environmental technology knowledge.
Visibility
We showcase our members nationally and internationally and share your company’s success stories.
Projects
You’ll have access to a wide portfolio of projects in areas such as circular economy, water, waste and resources.
Latest news
15. Oct 2026
Increased Funding for Plastic Sorting and Recycling to Support the Development and Testing of New Technologies
12. Oct 2026
Danish water innovation on show at IWA World Water Congress in Glasgow
7. Oct 2026
International Innovation Pilots: From Seabed Cameras in the Netherlands to CO₂-Driven Textile Recycling and Laser Robots in China
23. Sep 2026
Danish students behind a bench made of recycled concrete win the prestigious Red Dot Award
4. Sep 2026
TechBBQ 2026: Networking, Knowledge, and New Customers
15. Jul 2026
From Denmark to Brazil: Seven companies opened the door to new partnerships
9. Jul 2026
Clean launches new call to accelerate PFAS solutions
24. Jun 2026
Turning complex water challenges into concrete pilot solutions
16. Jun 2026
Connecting Colombia and Europe to Accelerate Circular Solutions in Plastics and Packaging
11. Jun 2026
The World’s Leading Water Innovators in Aarhus
1. Jun 2026
Six technologies with global ambitions explored Shanghai
29. May 2026
Clusters Are the Infrastructure. Here’s What That Actually Means.
22. May 2026
From shop shelves to the Baltic Sea: Flow of Plastic points the way to less plastic waste
11. May 2026
Danish environmental technology companies showed their strength at IFAT 2026 in Munich
30. Apr 2026
18 member companies showcased circular solutions at the Clean stand during LOOP Forum 2026
2. Mar 2026
From Reliable Pump Operations to Restoring Marine Life
26. Feb 2026
Clean Insights report : When rain becomes a system challenge
25. Feb 2026
New Interreg project to pioneer stormwater solutions across borders
Events
2026
28–31. OCT
Innovation Camp Nairobi (I4WASH 2026)
Explore growth markets in the water sector, sanitation, and climate adaptation in Kenya. Is your company looking to explore new export and…
2026
28–29. OCT
Water Enviorment Conference 2026
On 28–29 October, the Water Environment Conference will once again bring together municipalities, public authorities, the agricultural sector,…
2026
29. OCT
Meet South African Green Industry Stakeholders
Explore opportunities for Danish resource-efficiency and circular solutions in South Africa through direct dialogue with key eco-industrial park…
2026
3–4. NOV
BlueGreen Innovation Challenge 2026 (BIC26)
This is not your average hackathon. BIC26 brings together the entire value chain – from regional and municipal authorities, utilities and…
2026
4. NOV
POLYMER 26
Technical Conference on the Circular Polymer Economy in Practice
2026
12. NOV
From Bumps to Breakthroughs – Networking Event
Have you hit a wall in your climate adaptation work? Sometimes what we need when we’re stuck isn’t the next report, model or solution.…
2026
23. NOV
Explore China: Innovation Camp Shanghai
Ready to explore new innovation opportunities in the Chinese market? Going global can be an important driver of growth, and in China, strong personal…
2026
1. DEC
Get support to develop and test new technologies for plastic sorting and recycling.
There is a need for new technologies and solutions that…
2027
28–29. JAN
POSEIDON Final Conference
What have we learned from working on climate adaptation across the border? Over the course of the project, POSEIDON has brought together…
2027
21–22. APR
Become an exhibitor at LOOP FORUM 2027
Does your company have a solution that can make our use of resources more circular? On April 21–22, 2027, LOOP Forum will bring together companies,…