Stadtentwässerung Frankfurt am Main

What Stadtentwässerung Frankfurt am Main does

Stadtentwässerung Frankfurt am Main (SEF) is a municipal drainage and wastewater utility (Eigenbetrieb) wholly owned by the City of Frankfurt am Main, with continuous operation since 1887. It is mandated under Hessian and municipal law to collect and treat wastewater for approximately 1.14 million residents, businesses, and connected neighbouring municipalities and Abwasserverbände. Its core infrastructure comprises two wastewater treatment plants (ARA Sindlingen and ARA Niederrad), a public canal network of approximately 1,600 km, and over 3,000 km of private inlet channels that SEF systematically inspects using satellite camera technology.

SEF's technology stack includes the SEVA sludge dewatering and incineration facility in Sindlingen (operating since 1981), a new anaerobic sludge digestion plant with combined heat and power generation under construction (2025–2027, €213M total project cost), and specialized rehabilitation methods such as the minimally invasive Einzelrohr-Lining technique and trenchless Schlauchlining. The new digestion and CHP plant is engineered to process 1.4 million m³ of sludge annually and generate approximately 35 million kWh of electricity per year, enabling material energy self-sufficiency and supporting phosphorus recovery from the resulting ash. SEF is regulated under the Bundes-Immissionsschutzgesetz and 17. BImSchV for its sludge operations, and conducts federally-mandated public emissions reporting.

SEF's business model is that of a regulated municipal utility: revenue is generated through wastewater fees (Abwassergebühren), one-time canal connection contributions (Kanalanschlussbeitrag), and administrative fees (Verwaltungsgebühren), all set under the Entwässerungssatzung. Distribution is exclusively direct-to-end-user via the public canal infrastructure with no commercial sales motion; service delivery is mandated by law. The €213M sludge digestion project is partially funded by a Federal Ministry for Economic Affairs and Climate Protection (BMWK) grant under the Nationale Klimaschutzinitiative (reference 67K23534, May 2023 – April 2027). Recent strategic emphasis has been placed on climate adaptation (Siedlung Goldstein renewal, Starkregenvorsorge Frankfurter Berg), energy recovery, and inspection-driven maintenance of the private inlet channel network.

Name

Stadtentwässerung Frankfurt am Main

Legal name

Stadtentwässerung Frankfurt am Main

Website

https://stadtentwaesserung-frankfurt.de

Company type

Private

Founded year

1887

Operating status

Operating

Headcount range

101–250 employees

Short description

Stadtentwässerung Frankfurt am Main is a municipal utility (Eigenbetrieb) of Frankfurt am Main operating since 1887. It provides mandated wastewater collection, treatment, and canal network services to approximately 1.14 million residents and businesses across Frankfurt and connected municipalities via 1,600 km of public sewers and two treatment plants.

Ownership category

akta.pro rank

Product category

Municipal Wastewater Management

NAICS

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

SIC

Electric, Gas & Sanitary Services (4900), Sanitary Services (4950)

akta.pro primary industry

Municipal Wastewater Collection (Sewer Networks) (BPALAMAA)

Keywords

• Municipal wastewater treatment
• Sewer network operations
• Sludge incineration services
• Urban stormwater management
• Waterway maintenance

Headquarters

HQ city

Frankfurt

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Personnel, Operations, Technology or R&D

Revenue model

1. Sewage/Wastewater Fees (Abwassergebühren): SEF generates revenue primarily through regulated wastewater fees charged to all connected households, businesses, and property owners in Frankfurt am Main and connected municipalities. Fees are levied per the Entwässerungssatzung (drainage by-laws) and cover the cost of canal network operation, maintenance, and wastewater treatment. This is the core revenue stream for the municipal utility.
2. Canal Connection Contributions (Kanalanschlussbeitrag): One-time contributions charged to property owners for connecting new properties to the public sewage canal network. Governed by municipal satzung (by-laws).
3. Administrative Fees (Verwaltungsgebühren): Fees charged for various administrative services including connection permits, drainage surveys, groundwater discharge approvals, and temporary sanitary container connections (e.g., 75.00 EUR processing fee for temporary connections).

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Stadtentwässerung Frankfurt am Main is a municipal wastewater utility that operates the public sewer network, two wastewater treatment plants (ARA Sindlingen and ARA Niederrad), and a sludge dewatering and incineration facility (SEVA) for Frankfurt am Main and connected neighboring municipalities. It provides mandated collection, treatment, and disposal of municipal wastewater for approximately 1.14 million people, plus waterway maintenance, flood protection, and property drainage services. The organization also operates a new anaerobic sludge digestion plant under construction (213 million EUR project) for energy recovery.

Product overview

Stadtentwässerung Frankfurt am Main (SEF) operates as a municipal wastewater management utility organized as an Eigenbetrieb (municipal enterprise). The company's core offerings consist of wastewater treatment facilities in Sindlingen and Niederrad serving approximately 1.14 million people, a 1,600-kilometer public sewer network, waterway maintenance and flood protection services, and sludge digestion/incineration operations. The company also provides online services including sewer network information (Kanalnetzauskunft) and rainwater management inquiries (Niederschlagswasser), alongside customer services such as property drainage consultation, connection permitting, and facility tours. The subsidiary sludge treatment and incineration plant (SEVA) processes 1.4 million cubic meters of sludge annually, generating renewable energy through methane combustion. SEF conducts systematic private pipe inspections across approximately 80,000 properties and offers vocational training programs in metalworking and welding technology.

Differentiator

Problem solved

Functional benefit

Products and services

• Abwasserreinigungsanlage (ARA) Sindlingen und Niederrad Municipal wastewater treatment facilities that process wastewater from Frankfurt am Main and neighboring municipalities, serving approximately 1.14 million people.
• Kanalnetz (Sewer Network) Public sewer network infrastructure spanning approximately 1,600 kilometers of public canals and over 3,000 kilometers of private wastewater pipes for wastewater collection and transport.
• Gewässerunterhaltung und -ausbau Natural development and maintenance of Frankfurt's waterways including the Nidda river, with flood protection measures.
• Klärschlammfaulung und -verbrennung (Sludge Digestion and Incineration) Sludge digestion and incineration facilities processing 1.4 million cubic meters of sludge annually, generating approximately 35 million kWh of electricity through combined heat and power generation.
• Kanalnetzauskunft (Online Sewer Information Service) Online GIS-based service providing sewer network information and pipe location data to citizens, planners, and construction companies.
• Niederschlagswasser (Rainwater Management Service) Online service for rainwater management inquiries, including handling of Stormwater drainage permits and guidance.
• Abwasserrichtige Entsorgung (Proper Wastewater Disposal Advisory) Advisory services for proper disposal of grease separator residues, oil separator residues, mobile toilet contents, and industrial wastewater. Includes processing fee of 75.00 EUR for temporary sanitary container connections.
• Starkregenvorsorge (Heavy Rain Prevention) Flood prevention and stormwater management services, including hazard mapping and emergency response coordination for extreme rainfall events.
• Abwasserreinigungsanlagen-Besichtigung (Facility Tours) Guided tours of the wastewater treatment facilities in Sindlingen and Niederrad for groups of 5-20 people, including school, university, and institutional groups.
• Zuleitungskanal-Untersuchung (Private Inlet Channel Inspection) Systematic inspection service for private wastewater pipes, examining approximately 80,000 connection pipes throughout the city since 2010 at no cost to property owners.

Quantifiable outcome

• CO2 savings of ~8,000 tonnes per year through energy recovery from the new CHP plant
• +4 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered minor.

• Bund der Ingenieure für Wasserwirtschaft, Abfallwirtschaft und Kulturbau (BWK) e.V.minorOthersSEF is a member of BWK, a professional association for engineers in water management, waste management, and cultural construction. BWK addresses topics including soil protection, contaminated sites, ecology, and environmental technology, providing SEF with technical information and professional development resources.
• Deutsches Institut für Normung (DIN) e.V.minorOthersSEF holds membership in DIN, the independent platform for standardisation in Germany and worldwide. DIN supports market viability of innovative solutions through standardisation, which is relevant to SEF's technical infrastructure operations.
• Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall (DWA) e.V.minorOthersSEF is a member of DWA, a politically and economically independent association dedicated to sustainable water management and the promotion of research and development. DWA provides a forum for ideas and exchange and supports policy development, offering SEF technical standards and professional development.
• Klärwerk.infominorOthersSEF is a member of Klärwerk.info, an independent information source for professional and technical information specifically for wastewater treatment plant employees. It is published and edited by a small team of committed plant workers, a chief editor, and experienced industry professionals.

Scale indicators8 records

Recent moves5 records

Expansion highlights5 records

Regional players

• Zweckverband Kläranlage Böblingen-Sindelfingen: Regional wastewater association (Zweckverband) operating treatment plants and sewer networks in the Böblingen-Sindelfingen area. Comparable in technical scope but smaller and operates on a regional inter-municipal basis rather than a single city.
• Emschergenossenschaft / Lippeverband (EGLV): Large regional water management association in the Ruhr area operating wastewater treatment, sewer networks, and waterway management. Comparable in technical mandate (sewer + treatment + waterway) but serves a multi-city region rather than a single city like SEF.

Direct peers

• Hamburg Wasser: Municipal water and wastewater utility for Hamburg, operating sewer networks, treatment plants, and sludge processing. Closely comparable in scope, regulatory framework, and capital-intensive asset base to SEF.
• Stadtentwässerung Dresden: Municipal wastewater utility for Dresden, responsible for sewer network, treatment plants, and sludge management. Comparable municipal-utility model and regulatory environment in eastern Germany.
• Münchner Stadtentwässerung (MSE): Municipal wastewater utility for the City of Munich, responsible for sewer network operation, treatment plants, and sludge disposal. Strong direct peer given its Eigenbetrieb structure and similar mix of collection, treatment, and waterway management.
• Stadtentwässerung Stuttgart: Municipal wastewater utility for Stuttgart, operating sewer networks and treatment plants. Comparable Eigenbetrieb with overlapping service scope including stormwater management and sludge treatment.
• Kölner Abwasserwerke (StEB Köln): Municipal wastewater utility for Cologne, operating sewer networks, treatment plants, and sludge processing. Closely comparable in scale, service portfolio, and Eigenbetrieb governance.
• Berliner Wasserbetriebe: Municipal wastewater and water utility for Berlin, operating under similar Eigenbetrieb-style governance. Directly comparable in mandate, scale, and product mix to SEF, and serves as a benchmark for large German municipal wastewater utilities.

Broad incumbents

• Stadtwerke Bonn (StWB): Municipal multi-utility for Bonn that includes wastewater services alongside energy and water. Comparable on the wastewater line but broader in scope, making it a cross-utility incumbent peer.
• Veolia Deutschland (Water Technologies): Private-sector provider of water and wastewater treatment technologies, plant operation, and municipal services globally. Comparable as a counterfactual private operator that SEF could theoretically partner with or compare against, though it operates on a fundamentally different ownership model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 Stadtentwässerung Frankfurt am Main