Krüger

What Krüger does

Krüger A/S is a Danish water technology company headquartered in Søborg that provides consulting, technology supply, and digital optimization services for municipal and industrial water and wastewater treatment. Founded in 1903/1906 and operating as a wholly-owned subsidiary of Veolia Water Solutions & Technologies since 1999, the company serves municipalities, water utilities, and industrial clients in Denmark and more than 20 other countries, with primary segments in municipal wastewater, municipal drinking water, industrial water, property management, healthcare, and environmental remediation.

Its product portfolio centers on the Hubgrade Performance digital twin platform, which processes real-time sensor data to optimize wastewater plant operations (energy, chemical dosing, nutrient removal, N2O emissions), supported by specialized technologies including CARIX chemical-free ion-exchange softening, Cella biofilm carriers (developed with sister company AnoxKaldnes), Hydrotech cloth filtration, ozone treatment for pharmaceutical residues, PFAS removal solutions, and the 3iEN multifunctional sludge tank. Krüger also sells legacy STAR Utility System controls and the PREACT cloud-based rainfall prediction tool for wastewater catchments.

The business operates an enterprise field-sales model targeting municipal utilities via competitive tenders and public procurement, with revenue streams spanning one-time infrastructure projects (EPC), recurring Hubgrade digital subscriptions and optimization services, professional services and maintenance contracts, and recruitment services. Pricing is largely project-specific; some assessment services (CO2 accounting, solar feasibility, heat-pump analysis) are published at 12,500-15,000 DKK. On June 10, 2026 the company will rebrand to Veolia while retaining Krüger A/S as its legal entity name.

Name

Krüger

Legal name

Krüger A/S

Website

https://kruger.dk

Company type

Private

Founded year

1906

Operating status

Operating

Headcount range

251–500 employees

Short description

Krüger A/S is a Danish water technology subsidiary of Veolia Water Solutions & Technologies that supplies consulting, treatment technologies, and the Hubgrade digital optimization platform to municipal water utilities and industrial clients in Denmark and 20+ other countries.

Ownership category

akta.pro rank

Product category

Water and Wastewater Treatment Technologies and Services

NAICS

Water Supply and Irrigation Systems (22131), Environmental Consulting Services (541620), Water Supply and Irrigation Systems (221310)

SIC

Special Industry Machinery (No Metalworking Machinery) (3550), Water Supply (4941), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

akta.pro secondary industries

Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors) (BPABAJAK), Desalination Plant EPC, O&M & Performance Optimization (EUANAFAK)

Keywords

• Water treatment technologies
• Wastewater treatment solutions
• Drinking water softening
• Municipal water utilities
• Industrial water systems

Headquarters

HQ city

Søborg

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Water and Wastewater Treatment Infrastructure Projects: Design, engineering, procurement, and construction of water and wastewater treatment plants, including upgrade and capacity expansion projects for municipalities and industrial clients.
2. Hubgrade Digital Services (Software/SaaS): Digital optimization services for wastewater plants delivered via software licenses and ongoing subscription-based monitoring and optimization services. Includes real-time control setpoints, 24/7 support, and performance reporting.
3. Technical Services and Maintenance: Ongoing operational support, service contracts, maintenance, and consulting services for water and wastewater infrastructure. Includes lattergas measurement packages, CO2 accounting, energy optimization, and regulatory compliance services.
4. Recruitment Services: Recruitment and staffing services for water technology projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Krüger A/S is a Danish water consultant, contractor, and supplier of water and wastewater treatment equipment, services, and solutions for municipal utilities, water supply companies, and industrial clients. The company delivers integrated infrastructure projects (design, engineering, procurement, construction), proprietary treatment technologies (CARIX chemical-free softening, Cella biofilm, Hydrotech cloth filters, ozone, 3iEN sludge tanks), and the Hubgrade digital optimization platform that uses real-time data and algorithms to optimize plant operations.

Product overview

Krüger (becoming Veolia) offers a comprehensive water technology portfolio combining specialized consulting, advanced technologies, and digital solutions for water treatment and wastewater management. The core offering centers on Hubgrade Performance - an intelligent digital platform that optimizes treatment plant operations using real-time data and algorithms. Supporting technologies include CARIX chemical-free water softening, Cella biofilm technology for wastewater capacity expansion, Hydrotech cloth filters for phosphorus removal, and ozone treatment for pharmaceutical residue removal. The company serves municipal utilities, industries, and property owners across Denmark with solutions for drinking water production, wastewater treatment, storm water management, climate adaptation, PFAS remediation, and environmental restoration. Services span from design and construction to operation, monitoring, and optimization of water infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Hubgrade Wastewater Plant Performance Digital optimization platform for wastewater treatment plants that uses real-time data and advanced analytics to deliver operational savings, reduced climate footprint, and increased hydraulic and biological capacity. Targets municipal utilities and industrial clients seeking to optimize wastewater plant performance.
• CARIX (CArbon dioxide Regenerated Ion eXchanger) Chemical-free water softening technology using CO2 for ion exchange regeneration. Removes calcium, magnesium, sulfate, nitrate, and chloride without adding chemicals or sodium to drinking water. Uses 50% less energy than membrane desalination.
• Cella Biofilm Technology Compact MBBR-based biofilm technology using organic residual material as the carrier medium. Extends wastewater treatment capacity by up to 40% by supplementing existing activated sludge processes without requiring new tank construction.
• Hubgrade Digital Services Suite of digital water treatment services offering online control and monitoring solutions for wastewater and water supply systems, encompassing more than 60 control strategies for utilities and industrial clients.
• Hydrotech Cloth Filter Groundbreaking cloth filter removing suspended solids to less than 5 mg/l and phosphorus to below 0.1 mg/l. Lightweight 3 kg wet filter panels enable manual removal with 80% faster panel disassembly and cleaning.
• Ozone Treatment Technology Ozone-based treatment for removing pharmaceutical residues and other environmentally hazardous substances from wastewater. Functions as a 4th treatment stage with a lower CO2 footprint than alternative technologies.
• PFAS Treatment Solutions Comprehensive PFAS reduction portfolio combining thermal conductive soil remediation, GAC/µGAC carbon filtration, ion exchange resins, and NF/RO membrane filtration for drinking water, wastewater, and contaminated site applications.
• 3iEN Multi-functional Sludge Storage Tank Multifunctional steel sludge storage tank combining biogas collection, heat exchanger, and buffer functions in one unit. Recovers up to 36% heat from digested sludge and enables additional biogas collection.
• PREACT Rainfall Prediction System Cloud-based rainfall prediction system using radar and weather model data to forecast precipitation in wastewater treatment plant catchments, enabling proactive planning of water retention in basins to reduce overflow events.
• Mobile Water Services Rental/deployment-based mobile water treatment services for temporary, emergency, or supplemental industrial and municipal water treatment needs.
• STAR Utility System Legacy online control system for wastewater treatment plants, the predecessor to Hubgrade Performance. Used since 2002 with gradual updates and still deployed at sites such as the EDE wastewater plant in the Netherlands since 2011.
• TECTA Automated Monitoring Automated self-control monitoring system for water quality monitoring and compliance documentation in drinking water production.
• FLORA Hydraulic Analysis Hydraulic analysis software tool for modeling and assessing wastewater collection and treatment systems.
• Re.CaP Lime Scale Reduction Technology for reducing lime scale precipitation in waterworks and pipe networks, supporting drinking water infrastructure longevity.
• Methane Emission Reduction Services Services for measuring and reducing methane emissions from biogas plants and sludge treatment, including leak detection, remediation planning, and reporting. Listed on the Danish Energy Agency's Positivliste.
• Nitrous Oxide (N2O) Measurement and Reduction Services Complete service package for valid nitrous oxide measurements and emissions calculation from wastewater treatment plants, including certification for compliance with the Danish Environmental Protection Agency's recommended guidelines.

Quantifiable outcome

• Hubgrade Performance reduces energy consumption in wastewater treatment by up to 30%
• +19 more outcomes

Named customers17 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature7 records

Partnerships

15 partnerships are on record, tiered core and minor.

• Aarhus VandcoreStrategic or Co-development Partner · 17 December 2025Krüger is partnering with Aarhus Vand to install Denmark's first ozone plant at Egå Renseanlæg (150,000 PE) for pharmaceutical residue removal. The project, with groundbreaking on December 17, 2025, prepares for EU's revised Urban Wastewater Directive requirements. Expected to be operational in September 2026. Aarhus Vand initiated the project due to increased wastewater from the new Skejby supersygehus.
• VAM A/SminorStrategic or Co-development Partner · 17 December 2025VAM A/S is partnered with Krüger on the Egå Renseanlæg ozone installation project. The scope of VAM's role is not detailed in available sources.
• Veolia TysklandcoreTechnology or Integration · 1 January 2023For the Solrød Vandværk CARIX project, Veolia Tyskland provided process design and key process components, while Krüger handled overall project and design management, procurement, assembly, supervision, and commissioning. The Solrød plant was Denmark's first CARIX installation.
• Fors A/ScoreStrategic or Co-development Partner · 1 January 2022Fors A/S is the lead project owner for the KROBIO HYBRID MUDP lighthouse project demonstrating Cella biofilm technology at Svinninge Renseanlæg. The project ran from 2022-2025, with inauguration on May 3, 2024. Cella achieved 40% capacity extension at the plant, managed by Hubgrade Performance.
• AnoxKaldnescoreTechnology or Integration · 1 January 2022AnoxKaldnes (sister company within Veolia group) developed the Cella biofilm technology. Krüger A/S serves as project partner. Cella uses an organic residual product as carrier medium and combines advantages of activated sludge, MBBR, and aerobic granules in one process.
• NIRASminorImplementation/ SI/ Consulting Partner · 1 January 2022Krüger collaborated with NIRAS to prepare a report for the Danish Environmental Protection Agency (Miljøstyrelsen) on nitrous oxide emissions from wastewater treatment plants. The report was published September 10, 2024, demonstrating that operational control can reduce emissions.
• Danish Environmental Protection Agency (Miljøstyrelsen)minorOthers · 1 January 2022Krüger collaborated with NIRAS on a report for Miljøstyrelsen released in September 2024, showing that nitrous oxide emissions can be reduced through operational control measures at wastewater treatment plants.
• Energi DanmarkminorStrategic or Co-development Partner · 1 January 2022Energi Danmark participated in the BlueGrid EUDP project with Krüger and BlueKolding, working on intelligent balancing with green electricity from the treatment process, wind, and solar.
• BlueKoldingcoreStrategic or Co-development Partner · 1 January 2022BlueKolding collaborated with Krüger on multiple projects: BlueGrid (smart grid, demand-response, smart pumps), water turbine (first in Denmark, producing 600,000 kWh/year), and Hubgrade Performance implementation. BlueKolding is a showcase customer for Krüger's technology portfolio.
• Water Authority Vallei en Veluwe (EDE)minorStrategic or Co-development Partner · 1 January 2022The Dutch water authority in Ede-Wageningen upgraded to Hubgrade Performance after using Krüger's STAR Utility System since 2012. The upgrade enabled them to avoid building a third process line and reduced nitrogen in effluent by 20%. Now expanding with 5 new controls for further optimization.
• Mariagerfjord Vand A/SminorStrategic or Co-development Partner · 1 January 2022Krüger advised Mariagerfjord Vand A/S on establishing a heat pump system at Hadsund wastewater plant, recovering heat from wastewater to cover 15-20% of district heating demand. Project in cooperation with Hadsund Fjernvarme.
• Hadsund FjernvarmeminorStrategic or Co-development Partner · 1 January 2022Hadsund Fjernvarme partners with Mariagerfjord Vand A/S on the heat recovery project from wastewater. Heat from the treatment plant will be transferred to Hadsund's district heating consumers.
• EDE wastewater plant (EDE)minorStrategic or Co-development Partner · 1 January 2021EDE wastewater plant in the Netherlands has been a Hubgrade Performance customer since 2011 (as STAR Utility System), avoiding a third process line and reducing nitrogen in effluent by 20%. Now expanding with 5 additional controls.
• AEAminorImplementation/ SI/ Consulting Partner · 1 January 2020AEA served as general contractor (totalentreprenør) on the Bjergmarken Renseanlæg heat pump project. Krüger acted as advisor and supplier to AEA and the heat pump project.
• Frederikshavn ForsyningminorStrategic or Co-development Partner · 1 January 2020Krüger developed the 3iEN multi-functional sludge storage tank in collaboration with Frederikshavn Forsyning in Skagen (560 m³ pre-digested, 725 m³ digested). The tank combines gas collection, heat exchange, and buffer functions. Also deployed in Kolding.

Scale indicators10 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Xylem (incl. Evoqua): Xylem, including the 2023-acquired Evoqua, is a global leader in water infrastructure, treatment, and digital solutions (e.g., Xylem Vue). It competes head-to-head with Krüger on smart water networks, wastewater treatment optimization, and PFAS/PFOA removal, serving the same municipal utility customer base in Europe and globally.
• Suez Water Technologies & Solutions (now Veolia): Following the 2022 merger of Suez's water activities into Veolia, Suez Water Technologies & Solutions is now part of the same parent group as Krüger. Both serve municipal and industrial water/wastewater customers with EPC, chemicals, and digital solutions — making Suez a direct comparable inside the Veolia portfolio and a benchmark for technology breadth and global footprint.
• Aqualia (FCC Environment): Aqualia is one of Europe's largest water service operators (Spanish, owned by FCC), active in municipal water/wastewater treatment, desalination, and smart water management. It competes with Krüger on large municipal tenders and digital optimization across Southern Europe, Latin America, and the Middle East.
• Severn Trent / Severn Trent Services: Severn Trent is a UK-listed water utility with a growing technology arm providing treatment solutions, leak detection, and digital optimization. Comparable to Krüger as an integrated utility-services-and-technology player, though with a stronger regulated utility base in the UK.

Direct peers

• Waterleau: Waterleau is a Belgian water and wastewater treatment EPC contractor serving municipal and industrial clients across Europe, the Middle East, and Asia. It offers biological treatment, membrane systems, and digital optimization services directly comparable to Krüger's EPC + Hubgrade portfolio, with similar project-based revenue and European utility customer base.
• WABAG (VA Tech Wabag): VA Tech Wabag is a Swiss-headquartered global water technology EPC contractor specializing in municipal and industrial water/wastewater treatment plants. Direct competitor to Krüger on large-scale municipal tenders, with comparable technology offerings (biological treatment, filtration, desalination) and similar customer segments.
• AnoxKaldnes (Veolia subsidiary): AnoxKaldnes is Krüger's sister company within Veolia Water Technologies and the developer of the Cella biofilm MBBR technology that Krüger deploys. It is directly comparable as a Veolia-owned water technology brand offering biological treatment and biofilm carriers to municipal and industrial customers globally.
• Hydrotech (Veolia subsidiary): Hydrotech is a Veolia Water Technologies subsidiary specializing in cloth media filtration and disc filters for wastewater and drinking water applications. It is the source of the Hydrotech Cloth Filter product that Krüger markets in Denmark, making it a directly comparable Veolia sister brand.
• Sulzer (incl. Sulzer Water & Process): Sulzer is a Swiss industrial engineering company with a major water and wastewater process solutions business, including biological treatment, mixing, aeration, and digital monitoring. It supplies comparable process equipment and services to municipal and industrial customers, overlapping with Krüger's equipment portfolio.

Emerging players

• Cambi (thermal hydrolysis / PFAS remediation): Cambi is a Norwegian technology company specializing in thermal hydrolysis for sludge treatment and expanding into PFAS thermal soil remediation (the technology Krüger uses for PFAS at Høfde 42). Comparable to Krüger's environmental remediation segment and relevant as a partner/competitor in Nordic water and PFAS markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCMOW_zpO2rVVchXtluXLt6A/videos
• LinkedInlinkedin.com/company/kruger-as
• Xx.com/VeoliaWaterTech

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries13 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Krüger