What Hamburg Wasser does

Hamburg Wasser is the integrated municipal water and wastewater utility serving the City of Hamburg and its metropolitan region, owned by the Freie und Hansestadt Hamburg (City of Hamburg). The company provides drinking water to approximately 2.3 million people through a network of 17 water treatment plants that source groundwater from depths up to 429 meters via vertical and horizontal filter wells, naturally filtered and treated before distribution. Wastewater services are managed through approximately 6,000 km of sewer (Siel) network — including historic brick sewers ('Alte Riesen') dating back over 120 years — and treated at the Klärwerk Hamburg (Dradenau), Germany's largest municipal wastewater treatment plant. The company operates as a unified structure combining Hamburger Wasserwerke GmbH (HWW) for water supply and Hamburger Stadtentwässerung AöR (HSE) for wastewater management under the HAMBURG WASSER brand.

The business model is a regulated public utility with volume-based tariffs — drinking water at €0.002 per liter and wastewater at €0.002 per liter, among the lowest in Germany — distributed directly through the owned pipe network to all properties in Hamburg with automatic household connections. Beyond core water services, Hamburg Wasser has expanded into circular economy and energy recovery: the 60 MW wastewater heat pump supplies district heating to up to 39,000 households, biogas production exceeds the plant's own electricity consumption (120 Mio. kWh produced vs. 99 Mio. kWh consumed in 2025), and the HAMBURG WATER Cycle pilot in Jenfelder Au separates wastewater streams for targeted resource recovery. The FY2025 annual result was €113.8 million, with €1.15 billion in planned investments for 2025-2029 targeting network expansion, climate adaptation, and energy self-sufficiency.

Hamburg Wasser operates as a natural monopoly under a public service mandate, eliminating traditional sales competition but tying performance to regulatory and political stakeholders. Strategic partnerships span BUKEA (Hamburg's environmental authority) for sponge city development (RISA cooperation), Hamburger Energienetze for the heat pump project, and LSBG for joint infrastructure works on projects like Elbchaussee. The company pursues digital self-service via customer portals, the '33 Badewannen' corporate podcast, and public engagement through Hamburg Sustainability Week. Its sustainability profile is anchored by a 74% electricity self-supply rate (targeting 100%), receipt of the 2025 German Sustainability Award in the Water Supply category, and active climate adaptation through stormwater management and the Schwammstadt (sponge city) concept.

Name

Hamburg Wasser

Legal name

Hamburger Wasserwerke GmbH and Hamburger Stadtentwässerung AöR

Website

https://hamburgwasser.de

Company type

Private

Founded year

1844

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Hamburg Wasser is the municipal water and wastewater utility for Hamburg, Germany, serving over 2 million residents through integrated drinking water supply and wastewater treatment under public ownership by the City of Hamburg.

Ownership category

akta.pro rank

Product category

Municipal Water and Wastewater Utility Services

NAICS

Sewage Treatment Facilities (22132), Water Supply and Irrigation Systems (221310), Water, Sewage and Other Systems (2213)

SIC

Water Supply (4941)

akta.pro primary industry

Water Supply & Wastewater Utilities Administration (BPAIACAG)

akta.pro secondary industries

Water Quality Monitoring, Compliance & Reporting (Sampling, Lab, Regulatory) (EUANAAAG), Combined Sewer Overflow (CSO) Treatment & Wet-Weather Capacity (EUANADAF), Water Resources, WASH & Integrated Water Management (BPADALAH), Water Sampling, Testing & Laboratory Analysis (Legionella/Microbiology) (BPABAJAB)

Keywords

• Municipal water supply
• Wastewater treatment services
• Sewer network operations
• Drinking water distribution
• Water utility infrastructure

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Drinking Water Supply: Revenue from selling drinking water to approximately 2.3 million people in Hamburg and the metropolitan region. Ertrag from drinking water sales: 36.2 million Euro (2025).
2. Wastewater Treatment: Revenue from wastewater disposal services. Ergebnis (result) from wastewater division: 76.9 million Euro (2025). Total wastewater treated: 156.5 million cubic meters including rainwater from mixed sewer systems.
3. Infrastructure and Connection Fees: Fees for new connections, construction coordination services (e.g., shared infrastructure projects with other utilities like Hamburger Energienetze), and related engineering services.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Hamburg Wasser provides regulated drinking water supply and wastewater disposal services to all properties in the Free and Hanseatic City of Hamburg and the surrounding metropolitan region. Drinking water is sourced exclusively from naturally filtered groundwater via 17 waterworks and delivered through an 11,000 km pipe network, while wastewater is collected through an approximately 6,000 km sewer (siel) system and treated at Germany's largest municipal plant, Klärwerk Hamburg (Dradenau), which also produces biogas, recovers phosphorus, and feeds a 60 MW wastewater heat pump into the district heating network.

Product overview

Hamburg Wasser operates as a unified municipal utility providing integrated drinking water supply and wastewater disposal services to Hamburg and the metropolitan region, serving over 2 million people. The portfolio combines core infrastructure services with digital customer portals, environmental sustainability initiatives, and circular economy innovations. Key offerings include drinking water from 17 waterworks fed by deep groundwater wells, wastewater treatment at Germany's largest municipal treatment plant in Dradenau, and specialized services such as the HAMBURG WATER Cycle pilot project, biogas production, and a 60 MW wastewater heat pump for district heating. Digital touchpoints include the Kundenportal, water quality tools, water consumption calculators, and the '33 Badewannen' podcast. Environmental initiatives center on the Schwammstadt (sponge city) concept through the RISA cooperation, stormwater management, and infrastructure rehabilitation programs for aging sewer 'Alte Riesen' (Old Giants).

Differentiator

Problem solved

Functional benefit

Products and services

• Trinkwasserversorgung (Drinking Water Supply) Regulated drinking water supply service for Hamburg and the metropolitan region, sourcing groundwater from vertical filter wells up to 429 m deep and horizontal filter wells, naturally filtering and treating it before distribution through the company's pipe network to households, businesses and industry.
• Abwasserentsorgung (Wastewater Disposal) End-to-end wastewater collection, transport and treatment service using the ~6,000 km siel (sewer) network, including pumping stations and storage basins, to convey sewage to treatment facilities for Hamburg and surrounding areas.
• Klärwerk Hamburg (Dradenau) — Municipal Wastewater Treatment Germany's largest municipal wastewater treatment plant, providing sewage treatment, biogas production from sewage sludge, phosphorus recovery and thermal energy extraction via the 60 MW wastewater heat pump feeding district heating.
• Biogas Production and Grid Feed-in Energy recovery service converting sewage sludge into biogas through anaerobic digestion at Klärwerk Hamburg; the refined biogas is fed into the municipal gas grid, contributing to the plant's electricity self-sufficiency (74% in 2024, with the plant producing more electricity than it consumes).
• Abwasserwärme — Wastewater Heat Recovery and District Heating Supply Large-scale heat pump service extracting thermal energy from sewage and feeding it into the Hamburg district heating network via a 'Dritteinspeiser' connection to the Hafen energy park of Hamburger Energiewerke; targets climate-friendly heating supply for up to 39,000 households.
• HAMBURG WATER Cycle — Resource-Separation Wastewater Treatment Pilot circular-economy system deployed in the Jenfelder Au quarter that separates wastewater into blackwater (used for energy generation), greywater (treated and reused as service water) and rainwater (locally retained) for targeted resource recovery and reuse.
• Hausanschluss (House Connection Service) Service for connecting new properties — including households, businesses and industrial sites — to the drinking water and/or wastewater network, including planning, construction coordination and commissioning.
• Standrohrverleih (Standpipe Rental) Rental service providing temporary standpipes for construction sites, events and other short-term water supply needs that cannot draw from a permanent connection.
• Blei- und Kupferanalysen (Lead and Copper Water Analyses) Accredited laboratory service analysing lead and copper content in customers' drinking water installations in accordance with applicable drinking water regulations, primarily for property owners and landlords.
• Trinkwasserlabor (Drinking Water Laboratory) Accredited internal drinking water laboratory conducting microbiological analyses of water samples from Hamburg's supply area, going beyond the requirements of the German Drinking Water Ordinance (Trinkwasserverordnung).
• Trinkwasserspender (Public Drinking Water Fountains) Provision and operation of public drinking water fountains providing free access to drinking water at locations throughout Hamburg and the metropolitan region.
• Businessportal for Commercial and Industrial Customers Specialized portal and service package for commercial, industrial and municipal clients covering high-volume water supply, industrial wastewater pre-treatment coordination and infrastructure-construction coordination.
• Rohr- und Schlauchlining (Trenchless Pipe Rehabilitation) Trenchless sewer and pipe rehabilitation service using cured-in-place lining (Schlauchlining/Rohrlining) with hot water or UV curing to renew existing pipes without open excavation, used across the ~6,000 km siel network.
• Phosphor-Recycling (Phosphorus Recovery) Resource-recovery service recovering phosphorus from sewage sludge at Klärwerk Hamburg as part of urban-mining and circular-economy operations.
• Schwammstadt-Maßnahmen Online-Tool (Sponge City Measures Tool) Online planning tool, delivered jointly with BUKEA under the RISA cooperation, that helps property owners, developers and the city identify and apply sponge-city measures — local rainwater retention, infiltration and evaporation — to make Hamburg climate-resilient against heavy rainfall.

Quantifiable outcome

• Electricity self-sufficiency rate: 74% in 2024, targeting 100% from renewable sources
• +3 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• RISA (RegenInfraStrukturAnpassung)coreStrategic or Co-development PartnerCooperation project between HAMBURG WASSER and BUKEA (Behörde für Umwelt, Klima, Energie und Agrarwirtschaft) focused on sustainable rainwater management in Hamburg. RISA aims to make Hamburg climate-resilient through sponge city concepts, including an online tool showing various sponge city measures, funding opportunities, and applications for different areas of the city.
• Hamburger Energienetze (HNE)coreStrategic or Co-development PartnerPartnership for the wastewater heat pump project at Klärwerk Hamburg. Hamburger Energienetze sold a reserve transformer to HAMBURG WASSER for the heat pump system (60 MW thermal capacity, 95°C target temperature) and connects to the Hamburg district heating network as a 'Dritteinspeiser' (third feeder) to the Hafen energy park of Hamburger Energiewerke (HEnW).
• Landesbetrieb Straßen, Brücken und Gewässer (LSBG)coreStrategic or Co-development PartnerJoint infrastructure project on Elbchaussee where LSBG, HAMBURG WASSER, and Hamburger Energienetze coordinate construction work to rehabilitate water pipes, power cables, gas lines, telecommunications, and roads together, reducing overall construction time and traffic disruption.
• German Water PartnershipminorStrategic or Co-development PartnerHAMBURG WASSER is a member of German Water Partnership, a network of German water sector companies and organizations promoting German water expertise internationally.
• BUKEA (Behörde für Umwelt, Klima, Energie und Agrarwirtschaft)coreStrategic or Co-development PartnerMultiple collaborations including RISA for sponge city development, shared participation in Hamburg Sustainability Week, and climate adaptation initiatives. BUKEA is Hamburg's environmental authority.

Scale indicators13 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Kommunale Wasserwerke Leipzig (KWL): Leipzig's municipal water utility supplying drinking water and managing wastewater for a major German city. Comparable in integrated service delivery and reliance on groundwater sources.
• GELSENWASSER AG: Major German municipal water utility with regional supply across North Rhine-Westphalia and beyond. Comparable integrated water supply mandate, though operates across multiple municipalities rather than a single city.
• Berliner Wasserbetriebe: Berlin's municipal water and wastewater utility serving ~3.6 million people with integrated drinking water supply and sewage treatment. Closest direct comparable to Hamburg Wasser in scale, mandate, and integrated two-entity structure.
• Münchner Stadtentwässerung (MSE) / Münchner Wasserwirtschaft: Munich's municipal wastewater and water utility. Highly comparable as a major German city operator with circular-economy and energy-recovery initiatives similar to Hamburg Wasser's wastewater heat pump and biogas programmes.
• Stadtentwässerungsbetriebe Köln (StEB Köln): Cologne's municipal wastewater and stormwater operator. Directly comparable in mandate (integrated urban drainage, climate adaptation, Schwammstadt/sponge city initiatives) and serves a similarly large German metropolitan area.

Broad incumbents

• Stadtwerke München (SWM): Munich's municipal multi-utility covering electricity, district heating, water, and public transport. Comparable as a large German municipal utility with diversified services including water supply and energy-from-waste initiatives.
• Veolia Eau (Veolia Environnement): Global water and wastewater services group with major German municipal contracts. Comparable in technical capabilities (treatment plants, network operations) but operates broadly across multiple geographies and as a private-sector operator, not a municipal owner.
• SUEZ Water (Suez Eau France): International water utility and wastewater treatment operator with German municipal contracts. Overlaps in advanced treatment, energy recovery, and circular-economy offerings, but operates as a private-sector incumbents with a global portfolio.

Regional players

• DREWAG Stadtwerke Dresden: Dresden's municipal multi-utility providing water, wastewater, energy, and district heating. Comparable in integrated municipal service delivery and energy-from-wastewater initiatives, though not direct Hamburg-area competition.
• Wiener Wasser (Wien Energie / Stadt Wien): Vienna's municipal water utility supplying drinking water from Alpine springs to ~2 million residents via two main pipelines (Hochquellwasserleitung). Highly comparable in service scope and public-utility mandate, but operates in Austria.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/hamburgwasser
• YouTubeyoutube.com/channel/UCxBwZ7HekL_Lm_da6QabcKw
• Facebookfacebook.com/HamburgWasser
• LinkedInde.linkedin.com/company/hamburgwasser
• Instagraminstagram.com/hamburgwasser

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 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 Hamburg Wasser