Abwasserverband Braunschweig

What Abwasserverband Braunschweig does

Abwasserverband Braunschweig is a statutory water and soil association (Wasser- und Bodenverband) established in 1954 under German Water Association Law, operating the Steinhof wastewater treatment plant and surrounding infrastructure to serve the City of Braunschweig (~250,000+ residents) and several municipalities in the Gifhorn and Peine districts of Lower Saxony, Germany. The association's core offering is the 'Braunschweig Model' (Braunschweiger Modell) — a globally unique integrated water-nutrient-energy cycle that combines mechanical and biological wastewater treatment with agricultural irrigation of 2,700 hectares of farmland and CO2-neutral biogas production from energy crops cultivated on the irrigated land. Approximately 20 million cubic meters of wastewater are processed annually at 350,000 population equivalents (exceeding the 275,000 PE design capacity), with the Steinhof facility achieving full energy self-sufficiency through a block heating and power station fueled by digester gas, external biogas, and landfill gas.

The association operates an extensive physical infrastructure including 86 pumping stations, approximately 200 km of sewer network (with additional transport pipe networks managed for the Braunschweig city system), a 107 km irrigation pipe network with 165 irrigation machines across four irrigation regions, and the Hillerse biogas plant commissioned in 2007 producing approximately 26,500 m³ of biogas per day and 20.1 million kWh of electricity annually. Revenue derives primarily from municipal wastewater treatment fees paid by residents and businesses (covering ~550 member property owners and partner municipalities), agricultural irrigation services, biogas sales to local energy supplier BS|Energy via a 20 km dedicated pipeline, and ISO/IEC 17025-accredited laboratory services. Recent capital investments include a €5 million ERDF/SER-funded fourth treatment stage for trace substance elimination (under construction as of 2024) and a modern UV-C disinfection system commissioned in 2025.

The association maintains an active research portfolio of approximately 14 EU-funded projects (including AYUMI, HypoWave+, and SUWANU-EUROPE) targeting water reuse, nutrient recovery, and circular water management, and holds certifications including ISO 50001 energy management, DWA TSM technical safety management (since 2011), and QLA agricultural sludge quality assurance (since 2006, first in Germany). Governance is exercised through an elected board under chairman Peter Edelmann, with Dr. Franziska Gromadecki serving as Managing Director since October 2019.

Name

Abwasserverband Braunschweig

Legal name

Abwasserverband Braunschweig

Website

https://abwasserverband-bs.de

Company type

Private

Founded year

1954

Operating status

Operating

Headcount range

1–10 employees

Short description

Abwasserverband Braunschweig is a statutory German water association operating the Steinhof wastewater treatment plant and 2,700-hectare agricultural irrigation network under the unique 'Braunschweig Model.' It serves the City of Braunschweig and Gifhorn municipalities, processing 20 million m³ of wastewater annually while producing biogas for 6,000-7,000 households.

Ownership category

akta.pro rank

Product category

Wastewater Treatment Services

NAICS

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

SIC

Sanitary Services (4950), Cogeneration Services & Small Power Producers (4991), Water Supply (4941)

akta.pro primary industry

Advanced/Nutrient Removal (BNR/ENR: N, P) (EUANADAC)

akta.pro secondary industries

Advanced Treatment & Purification Utilities (MF/UF, RO, AOP, UV) (EUANAGAD), Wastewater Treatment Plant Biogas & CHP (EUACAIAE), Anaerobic Treatment & Resource Recovery (Biogas/Co-digestion) (EUANADAH)

Keywords

• Wastewater treatment services
• Municipal water management
• Agricultural irrigation reuse
• Biogas energy production
• Water association services

Headquarters

HQ city

Wendeburg OT Ersehof

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Municipal Wastewater Treatment Fees: Treatment of wastewater from the City of Braunschweig and municipalities covered by the Gifhorn water board, with costs borne by municipalities and their residents through utility fees.
2. Agricultural Irrigation Services: Provision of purified water and nutrients to agricultural areas belonging to association members during vegetation period, enabling cultivation of food, fodder, and energy plants.
3. Biogas Sales to BS|Energy: Sale of biogas produced from energy crops to local energy supplier BS|Energy through a 20-kilometer pipeline, for electricity and heating production for Braunschweig households.
4. Laboratory Services: Environmental analysis services including wastewater monitoring, industrial discharge testing, groundwater analysis, and third-party testing services.

Distribution channels2 records

Marketing channels6 records

Core offering

Abwasserverband Braunschweig operates the Steinhof wastewater treatment plant and surrounding infrastructure to provide mechanical, biological, and soil-based wastewater purification for the City of Braunschweig and Gifhorn Water Association municipalities, treating approximately 20 million cubic meters annually. The treated water is delivered via a 107 km irrigation network to 2,700 hectares of farmland belonging to approximately 550 member farmers, who cultivate food, fodder, and energy crops. Energy crops cultivated on irrigated land are converted into biogas at the Hillerse plant, which supplies BS|Energy via a 20 km pipeline for electricity and heating production.

Product overview

Abwasserverband Braunschweig operates as a water and soil association providing comprehensive wastewater management services centered around the unique 'Braunschweig Model' (Braunschweiger Modell). The core offering is the Klärwerk Steinhof wastewater treatment plant, which mechanically and biologically treats wastewater from Braunschweig and Gifhorn municipalities before agricultural reuse. The portfolio includes sewer network operations (Kanalnetz), laboratory services (Labor), and sewage sludge utilization (Klärschlammverwertung). Water purification continues through Rieselfelder (infiltration fields) and Verregnung (irrigation), where purified wastewater provides water and nutrients to agricultural crops. The Biogasanlage Hillerse converts energy crops grown on irrigated lands into biogas for electricity production. Additional services include UV disinfection, block heating and power generation, and the KlärWert project for nutrient recovery. The association also maintains an active research portfolio including the AYUMI project and approximately 13 other EU-funded initiatives focused on water recycling, trace substance elimination, and sustainable agriculture.

Differentiator

Problem solved

Functional benefit

Brands

• Klärens Klarwasser: Educational mascot character (a lion) for children, explaining what happens to wastewater and how to protect water resources.
• Braunschweiger Modell

Quantifiable outcome

• 20 million m³ wastewater treated annually
• +5 more outcomes

Named customers4 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• BS|EnergycoreStrategic or Co-development Partner · 1 September 2007Local energy supplier receiving biogas via 20km underground pipeline from Hillerse biogas plant. BS|Energy operates two gas engines (2 x 1 MWel) at Ölper power station for electricity and heating production serving thousands of Braunschweig households.
• ALBA Niedersachsen-Anhalt GmbHcoreStrategic or Co-development Partner · 1 September 2007Bio-waste fermentation facility providing biogas to the mixed gas supply for the block heating and power station, contributing to the treatment plant's energy self-sufficiency.
• Stadtentwässerung Braunschweig GmbH (SE|BS)coreStrategic or Co-development PartnerTechnical operational management partner for the Steinhof wastewater treatment plant. SE|BS serves as the technical Betriebsleiterin (operational manager) for the facility owned by Abwasserverband Braunschweig.
• Nature and Biodiversity Conservation Union (NABU)minorStrategic or Co-development PartnerNature protection cooperation at the infiltration fields, where continuous watering creates valuable biotopes and habitat structures for rare bird species.
• German Association for Water, Wastewater and Waste (DWA)minorOthersTSM (Technical Safety Management) certification provider. Abwasserverband has been TSM-certified since 2011, fulfilling strict requirements for technical departments.
• VDLUFA-QLA GmbHminorOthersQuality assurance certification for agricultural sewage sludge utilization. First ever body in Germany to receive QLA certification (2006) in categories input material, end product, and utilization concept.
• Gifhorn Water Association (Wasserverband Gifhorn)coreStrategic or Co-development PartnerService provider relationship where Abwasserverband handles wastewater disposal for certain municipalities in the Gifhorn district through wastewater treatment at Steinhof.

Scale indicators10 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Erftverband: German statutory water association for the Erft catchment managing wastewater treatment, groundwater protection, and watercourse maintenance. Comparable in legal form (Wasserverband), municipal wastewater focus, and integrated water-resource mandate.
• Wupperverband: Statutory water association responsible for flood protection, wastewater treatment, and water quality management in the Wupper catchment. Comparable statutory-association structure, multi-plant wastewater operations, and integrated watershed approach.
• Ruhrverband: Statutory water association in the Ruhr region managing reservoir operations, wastewater treatment for ~5 million people, and large-scale hydraulic infrastructure. Directly comparable as a German Wasserverband combining municipal wastewater treatment with integrated water-resource and energy responsibilities.
• Hamburger Stadtentwässerung (HSE): Hamburg's municipal wastewater utility operating large-scale treatment plants, an extensive sewer network, and energy recovery (including CHP and thermal use of treated wastewater). Comparable as a German municipal wastewater utility of significantly larger scale with energy-recovery and reuse elements.
• Niersverband: North Rhine-Westphalian statutory water association operating wastewater treatment plants, pumping stations, and sewage networks for member municipalities. Highly comparable mid-size German Wasserverband with mixed municipal/industrial catchment and energy-from-sludge operations.
• Emschergenossenschaft und Lippeverband (EGLV): Germany's largest statutory water association (Wasserverband), operating wastewater treatment, sewer networks, river maintenance, and CHP/biogas infrastructure across the Emscher and Lippe catchments. Closest structural and operational analogue to Abwasserverband Braunschweig as a member-owned Verband with treatment, reuse, and energy assets.

Broad incumbents

• Berliner Wasserbetriebe (BWB): Berlin's integrated water and wastewater utility serving ~3.8 million people with one of Europe's largest municipal sewer networks. Comparable as a German municipal water/wastewater incumbent, but at materially larger scale and with a broader mandate (potable water plus wastewater).
• Veolia Eau (Veolia Water Technologies & Solutions): Global water and wastewater services group operating municipal water/wastewater concessions, advanced treatment, and resource-recovery (including biogas and thermal reuse). Broadly comparable as an incumbent with end-to-end wastewater and water-reuse capabilities, though commercially structured rather than statutory.

Regional players

• Aquafin (Belgium): Flemish wastewater utility responsible for collecting and treating municipal wastewater for ~4 million inhabitants, with active R&D in energy recovery and nutrient reuse. Comparable as a publicly mandated regional wastewater operator focused on treatment performance and energy/material recovery.

Others

• Stadtentwässerung Braunschweig GmbH (SE|BS): Operational manager (technische Betriebsleiterin) of the Steinhof plant and owner/operator of the broader Braunschweig sewer network. Direct operational partner of Abwasserverband Braunschweig and itself a German municipal wastewater utility with overlapping service territory.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/facebook
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Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Abwasserverband Braunschweig