Hessenwasser

What Hessenwasser does

Hessenwasser GmbH & Co. KG is a municipal bulk water supplier (Wasservorversorger) headquartered in Groß-Gerau, Germany, providing drinking water to approximately 2.4 million people across the Rhein-Main metropolitan region. The company operates 21 waterworks and a 350+ kilometer regional pipeline network connecting extraction areas in the Hessisches Ried, Frankfurt Municipal Forest, and surrounding regions to municipal water utilities. Its core technical platform combines integrated groundwater management (active artificial recharge via infiltration of treated Rhine and Main surface water into aquifers) with advanced treatment capabilities including UV disinfection, sand filtration, and reverse osmosis (deployed at the new Hattersheim waterworks in June 2025).

The company generates revenue primarily through long-term drinking water supply contracts with municipal utilities and selected direct customers, supplemented by professional services including business and operational management for the Wasserverband Hessisches Ried (WHR), accredited laboratory analysis (over 40,000 water samples annually), proprietary asset condition assessment consulting, energy management, and infrastructure planning and construction services. Its customer base is concentrated among four regional municipal utilities — Mainova AG, ENTEGA, ESWE Versorgungs AG, and Riedwerke Kreis Groß-Gerau — which simultaneously serve as the company's shareholders, creating a closed regional ecosystem with limited churn risk. Recent strategic activity has centered on climate-resilient capacity expansion (Allmendfeld, Hattersheim, Schierstein modernization), redundancy investment (the 18.4 km Riedleitung pipeline), and participation in BMBF-funded research projects (WaRM, K2I) to advance digital water management and AI-assisted trace substance detection.

Name

Hessenwasser

Legal name

Hessenwasser GmbH & Co. KG

Website

https://hessenwasser.de

Company type

Private

Founded year

1899

Operating status

Operating

Headcount range

1–10 employees

Short description

Hessenwasser is a municipal bulk water supplier that provides drinking water to approximately 2.4 million people in Germany's Rhein-Main region through 21 waterworks and a 350+ kilometer regional pipeline network, serving municipal utilities that are simultaneously its shareholders.

Ownership category

akta.pro rank

Product category

Water Utility Services

NAICS

Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (22131)

SIC

Water Supply (4941), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Water Supply & Wastewater Utilities Administration (BPAIACAG)

akta.pro secondary industries

Water Treatment Plant Construction (Drinking Water) (IMAFAGAA), Monitoring & Control (Dosing Systems, Remote Monitoring, Sensors) (BPABAJAK)

Keywords

• Bulk water supply
• Drinking water treatment
• Municipal water utilities
• Groundwater management
• Water infrastructure services

Headquarters

HQ city

Groß-gerau

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Supply Chain, Technology or R&D, Others

Revenue model

1. Drinking Water Supply Contracts: Hessenwasser generates revenue by supplying treated drinking water to municipal water utilities and direct customers through long-term supply agreements. In 2025, the company delivered approximately 110.6 million cubic meters of drinking water to communal supply companies and direct customers, making this the primary revenue stream.
2. Operational and Management Services: Hessenwasser provides business and operational management services (Geschäfts- und Betriebsführung) for the Wasserverband Hessisches Ried (WHR), including operation of groundwater recharge facilities through infiltration in the Hessian Ried. Additional services include laboratory testing, asset management consulting, energy management, plan information services, and infrastructure planning and construction management.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Hessenwasser is a regional bulk water supplier that extracts, treats, and distributes drinking water to approximately 2.4 million people in the Rhein-Main metropolitan region of Germany. The company operates 21 waterworks, a 350-kilometer regional pipeline network, and active groundwater management infrastructure, delivering around 110.6 million cubic meters of drinking water annually to municipal utilities and direct customers under long-term supply contracts. Secondary offerings include laboratory testing, asset management, energy management, and operations management services for water utilities and associations.

Product overview

Hessenwasser operates as a regional water supply company providing comprehensive drinking water services to approximately 2.4 million people in the Rhine-Main region. The company's portfolio consists of a core water supply infrastructure spanning 21 waterworks and a 350-kilometer regional pipeline network, complemented by specialized services including laboratory analysis (Zentrallabor), asset management with an award-winning condition assessment system, energy management, and operations management. Major infrastructure projects include the new Riedleitung pipeline (18.4 km) and modernized/new water treatment facilities at Allmendfeld, Hattersheim (with reverse osmosis technology), and Schierstein. The company also participates in AI-powered research through the K2I project for trace substance detection.

Differentiator

Problem solved

Functional benefit

Brands

• WasserZeichen: Company magazine of Hessenwasser covering topics on water supply, sustainability, infrastructure, and regional water management.
• HW Fokus

Products and services

• Trinkwasserversorgung (Bulk Drinking Water Supply) Core service supplying approximately 2.4 million people in the Rhein-Main region with drinking water of the highest quality, managed through sustainable water extraction, treatment, and reliable distribution via long-term supply contracts.
• Wassermanagement (Integrated Water Resource Management) Integrated water resource management encompassing active groundwater management with deliberate infiltration of treated surface water for climate-independent, sustainable water sourcing across the Hessian Ried and Frankfurt Municipal Forest.
• Zentrallabor (Accredited Central Laboratory Services) Accredited central laboratory (akkreditiertes Prüflaboratorium) offering comprehensive water and environmental analytical services including drinking water, raw water, bathing water, sewage sludge, and wastewater analysis, available to external water utility clients.
• Asset Management / Zustandsbewertung (Asset Condition Assessment) Hessenwasser's proprietary assessment methodology for systematically identifying weaknesses in drinking water infrastructure, deriving maintenance recommendations, and enabling risk-based prioritization of investments with a sustainability focus. Offered as a consulting service to other water utilities.
• Betriebsführung (Business and Operational Management) Operational management services for water supply systems and associations, including the flagship contract providing business and operations management for the Wasserverband Hessisches Ried (WHR), encompassing groundwater recharge operations.
• Infrastruktur Planung und Bau (Infrastructure Planning and Construction Services) Infrastructure planning and construction services for water supply systems, covering new pipeline and facility development, executed for both internal investment and external municipal partners.
• Energiemanagement (Energy Management Services) Energy management services for optimizing energy consumption in water supply operations, leveraging Hessenwasser's certified energy management system and on-site renewable generation (photovoltaic and hydropower) expertise.
• Planauskunft (Plan Information Services) Information services for planners, construction companies, and third parties regarding water infrastructure plans and network locations to support safe construction near Hessenwasser's network.

Quantifiable outcome

• 2.4 million people supplied with drinking water across the Rhein-Main region
• +5 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature5 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Fraunhofer ISI (Fraunhofer-Institut für System- und Innovationsforschung)coreStrategic or Co-development Partner · 1 March 2023Fraunhofer ISI led and coordinated the three-year WaRM (Nachhaltige, flexible Grundwasserbewirtschaftung in Ballungszentren) research project with ten partners. Hessenwasser participated as a practice partner providing samples, raw data, and expertise to develop a water system model for the Frankfurt/Rhein-Main metropolitan region. The project ran from March 2023 to February 2026 and was funded by the German Federal Ministry for Research (BMBF).
• Wasserverband Hessisches Ried (WHR)coreStrategic or Co-development PartnerHessenwasser provides Geschäfts- und Betriebsführung (business and operational management) for the WHR, supporting particularly the operation of groundwater recharge facilities via artificial infiltration of treated Rhine water in the Hessian Ried. WHR operates the Brauchwasserwerk Biebesheim (5,400 m³/h capacity).
• RTW Planungsgesellschaft mbHcoreStrategic or Co-development PartnerJoint project with RTW for the Hattersheim waterworks — a prerequisite for the Regionaltangente West (RTW) railway project's environmental permit. Hessenwasser designed, built, and now operates the facility, which includes a reverse osmosis treatment unit as its centerpiece.
• BGS UmweltminorStrategic or Co-development PartnerResearch partner in the WaRM project, contributing environmental expertise to the water system modeling for the Rhein-Main region.
• GICON Resources GmbHminorStrategic or Co-development PartnerResearch partner in the WaRM project, contributing water resource management expertise.
• Hessisches Landesamt für Naturschutz, Umwelt und Geologie (HLNUG)minorStrategic or Co-development PartnerResearch partner in the WaRM project, providing state-level environmental and geological expertise for the Hessian Ried region.
• Nordwestdeutsche Forstliche VersuchsanstaltminorStrategic or Co-development PartnerResearch partner in the WaRM project, contributing forestry and land use expertise relevant to water resource management.
• Technische Universität Darmstadt (TU Darmstadt)minorStrategic or Co-development PartnerResearch partner in the WaRM project from the academic sector, contributing geological and hydrological expertise.
• Arbeitsgemeinschaft Wasserversorgung Rhein-Main (WRM)coreStrategic or Co-development PartnerWRM is the cooperation forum of major water suppliers, water associations, and institutions in the Rhein-Main region since 1978. Elisabeth Jreisat (Hessenwasser CEO) serves as WRM Board Chair. WRM's Leitungsverbund (pipeline network) serves over 4 million people. Hessenwasser drives WRM initiatives including the Leitungsverbundstudie (pipeline network study update funded with 220,000 euros by Land Hessen).
• Land Hessen (Hessian State Government)coreOthersLand Hessen provides financial support for Hessenwasser's infrastructure projects and regional water management initiatives. This includes 220,000 euros for the WRM Leitungsverbundstudie update and 400,000 euros (80% of costs) for the WHR feasibility study on Rhine water treatment expansion.
• Mainova AGcoreChannel Partner/ Reseller/ DistributorMainova AG is Hessenwasser's largest municipal customer and shareholder (with Hessenwasser providing operational management support and receiving drinking water supply). Mainova distributes water to Frankfurt consumers and Dr. Jörg Becker serves as Hessenwasser's Supervisory Board Chair.
• ENTEGAcoreChannel Partner/ Reseller/ DistributorENTEGA is a major municipal energy and water utility and shareholder of Hessenwasser, receiving bulk water supply services as a customer.
• ESWE Versorgungs AGcoreChannel Partner/ Reseller/ DistributorESWE Versorgungs AG is a municipal utility in Wiesbaden, serving as both customer and shareholder of Hessenwasser. ESWE distributes drinking water supplied by Hessenwasser to Wiesbaden consumers. Hessenwasser supplies drinking water for the city's Versorgungszone Süd and Rheingau region.
• Riedwerke Kreis Groß-GeraucoreChannel Partner/ Reseller/ DistributorRiedwerke Kreis Groß-Gerau is the municipal water works of the district of Groß-Gerau and a shareholder of Hessenwasser, receiving bulk water supply and related services.

Scale indicators12 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Stadtwerke München (SWM): Large integrated municipal utility (Stadtwerk) supplying water, energy, and mobility to Munich. Comparable end-to-end water supply operations and infrastructure, though operating in a different geography and as a broader multi-utility.
• Veolia Water Germany (Veolia Deutschland): A large incumbent operating municipal water supply and service contracts across Germany. Overlaps with Hessenwasser in water treatment operations, asset management, and B2B utility services, but as a multinational with a much broader portfolio.

Direct peers

• Berliner Wasserbetriebe (BWB): Major integrated water utility serving Berlin with a similar combination of water extraction, treatment, and large-scale distribution infrastructure. Comparable in operating model and customer base (municipal-scale population served).
• Gelsenwasser AG: Major German water utility serving multiple regions in North Rhine-Westphalia and beyond with municipal utility customers and long-distance supply networks. Comparable in size, business model, and customer profile to Hessenwasser.
• Zweckverband Bodensee-Wasserversorgung: Major regional bulk water supplier based on Lake Constance serving 4 million+ people across Baden-Württemberg. Highly comparable in business model, scale, and multi-state regional pipeline distribution to municipal utilities.
• Harzwasserwerke GmbH: Regional water supplier focused on the Harz mountains serving Lower Saxony and beyond with dam-based water sourcing and a long-distance pipeline network. Directly comparable bulk water supplier with municipal utility customers.
• Fernwasserversorgung Elbaue-Ostharz GmbH: A regional bulk water supplier serving municipal utilities in central Germany with long-distance transport pipelines. Operates with a comparable business model: long-term supply contracts with municipal water utilities (Stadtwerke) and a pipeline-based distribution network.
• Wasserverband Eifel-Rur (WVER): Regional water association (Wasserverband) operating water supply and wastewater infrastructure for municipal members in the Eifel-Rur region. Comparable in structure as a member-owned regional water supply body with infrastructure-heavy operations.
• Hamburg Wasser: Integrated municipal water utility serving Hamburg and surrounding areas with water extraction, treatment, and distribution. Comparable scale and integrated utility operating model to Hessenwasser.
• Zweckverband Landeswasserversorgung Baden-Württemberg: A regional bulk water supplier (Wasservorversorger) for the state of Baden-Württemberg with a comparable long-distance pipeline network and multi-million-customer base. Highly analogous role in Germany's regional water supply infrastructure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@hessenwasser
• Xx.com/hessenwasser

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

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 Hessenwasser