Technical Tours

Combine your congress participation with Technical Tours to some of Denmark’s leading water projects and facilities. There will both be shorter tours during the congress and tours Friday and Saturday after the congress.

Tour 1


From well to tap - Groundwater protection and visit to two Danish waterworks

Drinking water in Denmark is based exclusively on groundwater and one of the features that make it so unique is the fact that chlorination is not necessary to achieve high quality drinking water. This is the result of targeted groundwater protection, a dedicated water supply sector and collaboration between regions, municipalities, waterworks and the private sector. On this tour, participants will visit two waterworks and be introduced to the Danish approach of groundwater protection by the Capital Region of Denmark.

Hedehusene Østre Waterworks: A small, consumer-owned waterworks, Hedehusene Østre Waterworks with a production of 100.000 m3 drinking water per year. The site visit will include presentation of the Danish concept of aeration of groundwater to drinking water quality and the challenges faced by the new renovated consumer-owned utility.

Marbjerg Waterworksle: A big, public waterworks with a production of 4.800.000 m3 drinking water per year (part of Denmark’s largest water utility HOFOR). The waterworks uses the newest technology developed with focus on the high standards for food safety, low energy consumption and intelligent automation. The site visit will include the complete water treatment train from pellet softening of water to pressurized aeration, dual-media filtration, UV-treatment, storage in hygienic stainless steel clean water tanks and intelligent SCADA control system.

Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 40 euro
Duration: 4 hours
Limit of 25 delegates

For participation, we recommend to wear comfortable clothes.

Tour 2

Wastewater & resource recovery

The future treatment plant is a water resource recovery facilty

Visit the full scale living lab, Avedøre Wastewater Treatment Plant, where focus is on sustainable circular economy. The visit will include a guided tour of the facility where you will see and hear about:

  • Recovery of phosphorous from sludge ashes.
  • Carbon harvesting by prefiltration to increase biogas production and reduce energy consumption.
  • The Biogas Park where biogas is upgraded to bio-natural gas and the CO2 is methanized for utilization in the public grid.
  • Nitrous oxide minimization by online control and control of nitrogen removal and test facility for treatment of hazardous substances in wastewater.
  • Next generation technology from our strategic coorperation under the name 3VAND: VCS Odense, Aarhus Vand, HOFOR and BIOFOS.

The treatment plant is operated by BIOFOS, Denmark’s largest wastewater utility which treats the wastewater of 1.2 million people living in the Greater Copenhagen Area at their three treatment plants. BIOFOS’ energy balance is positive with a surplus on 151%.

Participation with comfortable, warm clothes is recommended.


Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 40 euro
Duration: 4 hours
Limit of 50 delegates

Tour 3

Water loss

Combined technologies to fight global water loss

Visit the demo-sites of the LEAKman project – a Danish joint partnership specialized in water loss reduction.

Water scarcity and water loss are massive challenges for water utilities worldwide. Protecting water as a precious resource requires new technologies and collaboration. Leakage levels in Danish drinking water networks are among the lowest worldwide, with an average loss below 10%. This is the result of long-term efforts establishing strategic rehabilitation processes, good craftsmanship and accurate measurements of production as well as consumption. Denmark is a first mover when it comes to water technology, with various companies providing innovation in the field. In order to leverage this expertise, the LEAKman project has taken a novel approach to fight water loss by bringing all stakeholders along the water supply together such as technology providers, consultancies, utilities and the Technical University of Denmark. The full scale demonstration facilities situated close to Copenhagen present a possibility to experience the solutions in real-life.

Visit Greater Copenhagen Utility (HOFOR – 5 min Walk from exhibition) to get an overall introduction to the technical solutions of LEAKman including the integration of different technologies, partnership, vision, and already achieved results. You will also meet the different stakeholders involved in the project such as Leif Koch, AVK, HOFOR, Novafos, Grundfos, Aveva, Kamstrup, NIRAS and DTU.

Afterwards, you will get the chance to visit two demonstration sites around Copenhagen. This bus tour will take you to Frederiksberg Utility and Novafos Utility. Here, you will see and learn about the intelligent pump station and the demo-site showcasing pressure reduction valves, smart meters, antenna sites for collection of data, pressure sensors, and deployed noise loggers.

Participation with comfortable shoes and jacket is recommended as the sites will be outside.


Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 40 euro
Duration: 4 hours
Limit of 40 delegates

Tour 4

Climate change adaptation

Creating liveable cities through climate change adaptation - the experience of Greater Copenhagen

Most of Copenhagen has a combined sewer and storm water system based on underground pipes. Climate change has increased the intensity and frequency of heavy rainfall events and lead to combined sewer overflow and surcharge. To build a more resilient city, Copenhagen has chosen to complement existing infrastructure, and to give priority to green-blue infrastructure in order to increase urban greenery and to improve livability. The citywide cloudburst management plan relies greatly on the green and blue surface solutions, creating a new layer of infrastructure for storm water transport and retention.

The tour will visit five locations in The City of Copenhagen as well as Frederiksberg Municipality, where green-blue solutions have reshaped the city: Enghave Park, Carlsberg City, Copenhagen Zoo, Langelands Square and The Climate Quarter at Østerbro.

Experts from both Copenhagen and Frederiksberg will cast a light on technical aspects and governance related issues on the bus and on-site. The tour will feature technical presentations including: Advanced cloudburst management (Enghave Park and Carlsberg City), technologies to close the water cycle and reuse storm and rainwater (Copenhagen ZOO) the use of digitalization to monitor and manage the complex urban hydrology (Langelands Square), and an integrated urban greenery solution to mitigate climate change impact (The Climate Quarter).

Solid footwear and weatherproof clothing is recommended for this tour.


Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 40 euro
Duration: 4 hours
Limit of 50 delegates

Tour 5

Climate adaptation (boat tour)

The transformation of Copenhagen's harbour area - Climate change adaptation, flood protection and improved liveability

This technical tour will tell the story about the profound transformation of Copenhagen’s inner harbour and the companies, authorities and research institutions that formed the ecosystem required for its transformation, by providing expertise, technical solutions and visions for a climate proofed, safe and livable urban harbour.

Topics of the tour include: Climate change adaptation in the proximity of the harbour, protection of the (bathing) water quality in the harbour, prevention of stormwater and combined sewer overflow, future and present storm surge protection measures in the historical context and the integration of recreational activities in a former industrial harbour.

After the boat tour, experts that contributed to build the innovative solutions will present technical details of the projects at Sankt Annæ Square in the inner city of Copenhagen.

The presentations will feature: Detailed modelling and storm water management simulations (DHI): Advanced basin structures in dense urban environments (Krüger) and planning and design cloudburst infrastructures (Rambøll). The technical presentations will be made on-site and include demonstrations and oral presentations.

The tour will also offer a chance to get to know Copenhagen’s main tourist sights from the waterside.

Solid footwear and weatherproof clothing is recommended for this tour.


Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 45 euro
Duration: 4 hours
Limit of 80 delegates

Tour 6

Water quality and climate neutrality (boat tour)

Innovations for clean harbour water and climate neutral wastewater treatment

This boat tour will bring you through the harbour of Copenhagen to Greater Copenhagen’s largest wastewater treatment plant: BIOFOS Lynetten. The boat tour will introduce participants to the profound transformation of Copenhagen’s inner harbor from a dirty, industrialized area to a highly treasured recreational water body. Recently, CNN Travel marked Copenhagen as the top city for swimming, even ahead of cities like Rio de Janeiro – home to the famous Copacabana Beach.

The tour will also offer a chance to get to know some of Copenhagen’s main tourist sights from the waterside – incl. the Royal Palace and statue of the Little Mermaid.

After the boat tour through the harbour, the boat will dock at Denmark’s largeste wastewater treatment plant – Lynetten – where you wil get a tour of the plant and meet the technical experts who contributed to the harbor’s transformations and the WWTP’s journey to become a resource recovery facility.

Lynetten is a highly effective wastewater treatment plant that safeguards the high water quality in Copenhagen. The treatment plant is not only among the most effective in cleaning water, but has also focused on increasing the energy yield from the wastewater and reducing the energy demand for the treatment processes. Today, Lynetten produce 151% of the energy that it consumes and thereby contributes to reaching Copenhagen’s goal of becoming carbon neutral by 2025. During the tour, you will also get insights into the next generation of technology from Denmark’s four largest water utilties: VCS Denmark, Aarhus Vand, HOFOR and BIOFOS.

Solid footwear and warm, weatherproof clothing is recommended for this tour.


Date and time: Afternoon during the conference. Exact time will be decided once the conference programme is ready to insure it doesn’t conflict with similar themed sessions.
Cost: 45 euro
Duration: 4 hours
Limit of 80 delegates

Tour 7

Wastewater and nature restoration

Fully-covered wastewater treatment plant with ambitious goals and nature restoration of Frederiksborg Castle Lake

Visit Denmark’s first fully covered WWTP – Solrødgaard – in the historic surroundings of Hillerød, North of Copenhagen. Hillerød Utility has established a green field wastewater treatment plant with ambitious energy and climate goals and a unique architecture. Among the design drivers have been: net-energy positive, CO2 neutrality, optimal resource usability, symbiosis with private and public institutions, integration of the plant in the natural surroundings and high working environment standards.

The new WWTP was constructed to fulfil stringent effluent requirements (TP = 0.27 mg/l and TN = 6 mg/l). Among the installed technologies are pre-filtration for recovering of the carbon source in the raw wastewater, advanced online control including a COD splitter for optimal use of carbon for biogas production without compromising the denitrification process, anammox for treatment of reject water from mesofil digestion of sludge combined with external fat and household waste for a number of private companies and public institution (hospital).

The utility is also in the early stages of a new project concerning local rainwater management project in it’s city centre, which will address the urgent need to improve the aquatic environment in Frederiksborg Castle Lake. The project identifies potential solutions to meeting the requirements of Denmark’s national “Action Plan for the Aquatic Environment” by separating and diverting stormwater to relieve pressure on the existing sewage system and resolve future climate challenges as well as improve downstream water quality.

This visit will include a guided tour of the new green field WWTP and the Frederiksborg Castle Lake nature restoration project and will conclude with a guided tour of the historic castle (entrance fee is included in the price).

Warm, comfortable clothing is recommended for this tour.


(All day tour)

Time: TBC (all day tour)
Cost: 50 euro
 Limit of 50 delegate

Tour 8

Water in industries

Visit to Kalundborg Industrial Symbiosis

Visit the world’s first industrial symbiosis and experience first-hand how private enterprises are exchanging residuals and byproducts from industrial production in closed cycles – with significant water savings as a result.

Industrial parks around the world have great potential for using resources more efficiently. Savings can be achieved by establishing shared water supplies and wastewater treatment plants. Furthermore, water and other resources can be recycled between the different factories. With the right technology and treatment, wastewater that comes from one company can be used as a resource in another. The Kalundborg Symbiosis is a pioneering example of this.

During this tour, you will be presented to an elaborate case of Integrated Water Ressource Management around a lake, which provides water for the industrial community. The visit includes a guided tour of a waterworks, which abstracts water from the lake and treats it to drinking water quality without the use of chlorine. You will also visit the largest heat pump in Denmark and an advanced wastewater treatment plant that removes pharmaceutical residues from wastewater using ozone. Representatives from the industries in the symbiosis will explain how the symbiosis was started and how continuous processes is keeping it alive and ensuring further development. Finally, a workshop will be arranged to allow you to get hands-on experience with working in an industrial symbiosis. Perhaps you can contribute with your unique knowledge so that your ideas for future water initiatives in the Symbiosis can be part of the future?

Cost: 50 EUR

Tour 9 (2 days)

Water for smart liveable cities

Water for smart liveable cities – the Danish experience

Get the full experience of what the Danish water sector has to offer through this 2-day trip to Funen and Jutland where you will experience a combination of some of Denmark’s leading projects in terms wastewater treatment and resource recovery, climate change adaptation and smart water solutions that helps create attractive and liveable cities. This tour is also a great opportunity to experience some of Denmark’s cultural heritage.

DAY 1:

  • Morning: Departure from Copenhagen
  • Stop 1: Ejby Mølle WWTP, Odense: Odense is the home town of the famous Danish fairytale author, Hans Christian Andersen. It is also home to one of Denmark’s largest water utilities, VCS Denmark, which has achieved excellent results in wastewater treatment and energy efficiency. Visitors will experience how energy consumption is reduced and green energy is produced from the sludge. The result is an energy self-sufficiency of 180% – enabling the utility to sell excess energy production to the local grid.
  • Stop 2: The Climate City, Middelfart: Experience one of Denmark´s large-scale climate adaptation projects where rainwater has been disconnected from roads and sidewalks in an area of 450.000 m2. The visit will include guided tours of three different areas (the Forest Quarter, the Avenue Quarter and the Town Quarter) where different rainwater management solutions have been applied, making rainwater a visible urban element with new multi-functional urban spaces.
  • Stop 3: Carlsberg’s water efficient brewery, Fredericia: At Carlsberg’s brewery in Fredericia, state-of-the art total water recycling technology is being installed which will allow Carlsberg to safely reuse 90% of the brewery’s process water, lowering the water usage from 2,9 hl/hl to 1,4 hl/hl. This ambitious project is the result of collaboration between a public-private partnership called DRIP, the local wastewater utility plant FRSE and of course Carlsberg. The visit will include a tour of the brewery and the newly installed Water Treatment and Recycling plant as well as an introduction to the partnership made this a reality. You will of course also get to taste some of Carlsberg’s great products.
  • Evening programme: After the technical tours, you will get a chance to visit the home of one of Denmark’s perhaps most iconic brands as the day will conclude with guided tour and dinner at LEGO House in Billund followed by an overnight stay at Hotel LEGOland.

Day 2:

  • Stop 1: Billund Biorefinery, Billund: Billund BioRefinery is a demonstration plant for some of the best and most innovative Danish environmental technologies when it comes to treating biowaste and wastewater. Billund Biorefinery is focusing on getting more out of less in terms of energy and resources from wastewater and biomass. It aims at closing a local resource circle as the plant is also receiving organic household waste from the local municipality and organic byproducts from the local industry.
  • Stop 2: AquaGlobe, Skanderborg: At Aquaglobe and Skanderborg Utility, you will see how a holistic approach to water solutions can impact the design of Smart Liveable Cities. The visit will include practical insights into how partnerships are formed, involving the local government, R&D-driven institutions and private businesses. The overall idea behind these projects is to create low cost and better solutions benefitting both consumer and the environment. A perfect hands-on example is the Coast to Coast Climate Challenge (C2C CC) – a national climate project that aims to create a climate resilient region. You will also be introduced to Skanderborg Utility’s customer panel and get a taste of the Danish idea of “the good life” and experience genuine Danish “hygge” during lunch.
  • Stop 3: Integrated control and warning systems, Aarhus: The coastal City of Aarhus (Denmark’s second largest city) aims to be a blue and green city. This involves restoring the old industrial harbor area into residential and recreational areas and reopening a cased river flowing through the old city center into the harbour. To obtain proper water quality and prevent flooding, approximately EUR50 million was invested in constructing trunk sewers, storage tanks and increasing rainwater handling capacity at the city’s wastewater treatment plants. A real-time control and warning system was also developed, reducing the need for storage capacity by nearly 50% for less than 5% of the total costs. The control system optimizes the use of the storage capacity in the combined sewer system through real-time control of weirs and pumps, which minimizes combined sewer overflows during heavy rain. The warning system forecasts deteriorated water quality in the receiving waters based on automatic operation of integrated models which use real-time data from the sewer systems and wastewater treatment plants and forecasted rainfall data from a Local Area Weather Radar.
  • Late afternoon/evening: Ferry and bus back to Copenhagen 


(2-day tour)

Cost: 110 EUR
 Limit of 50 delegates

Nordic Technical Tours

Want to combine your trip to Denmark with a visit to Finland or Sweden? Join one of the Technical Tours to one of Denmark’s neighbouring countries.

Tour 10

Tour to Finland

Finnish Water Way

Experience the Finnish way of sustainable water management – in one day!

Get the most out of your Nordic IWA2021 experience with a one-day visit to Finland. At this full-day tour, you will learn about the best practices of Finnish water sector while enjoying the city of Helsinki – the Nordic hub of design, culture and urban nature.

Programme includes a mini-seminar and site visits covering a wide range of water issues. Main visit destination is Viikinmäki WWTP – largest treatment plant in the Nordics, and a forerunner in resources recovery.

Please note that the event takes place in Helsinki, Finland, one day before the main event in Copenhagen, Denmark. Participants are expected to coordinate their travel arrangements to Helsinki independently.

* This tour is conditioned on a minimum of 20 participants

Photos: © Visit Finland and Finnish Water Forum


Cost: EUR 50
Duration: 1 day + optional evening programme
 Limit of 70 delegates*

Tour 11

Tour to Sweden

Urban innovation & next generation recovery plant

Seize the opportunity to visit NSVA, a water services company in the south of Sweden owned by seven municipalities. The site visit includes a guided transfer from Copenhagen to Helsingborg through the landscape of the south west coast of Sweden.

There will be a guided tour in the district H+, the largest urban renewal project in Helsingborg in modern times. The buildings in the district are designed to connect three different pipelines that separate the grey and black water and milled food waste which will be treated at Reco Lab, the next generation recovery plant. At the second stop we will experience the new, and one of a kind, water tower with a spectacular view and architecture.

Helsingborg is one of Sweden’s fastest growing cities and a world leader in industrial symbiosis. In order to become a smarter and more sustainable city, innovation is key.

*The fee for the tour includes transportation from Copenhagen to Helsingborg in Sweden and back as well as lunch and coffee/tea breaks.


Time: All day tour
Cost: 45 euro

Join us in Copenhagen! See you in...