Biogest AG

What Biogest AG does

Biogest AG is a privately held German specialty manufacturer founded in 1976 and headquartered in Taunusstein, focused on technical equipment for municipal water management (Siedlungswasserwirtschaft). The company designs and produces stainless steel systems for three interconnected domains: rainwater flow control and flood protection (ALPHEUS® mechanical and electrical flow limiters, EGAR, storm screens, vacuum and gate flushing systems), wastewater treatment (SBR sequencing batch reactor plants scaling from 100 PE to 400,000 PE, including the containerized PURITAINER mobile unit), and biological aeration and sludge handling (CROWN® surface aerators, clarified water decanters, and filtration sack dewatering). Its technology is anchored by decades-old proprietary designs — notably the float-controlled ALPHEUS® throttle launched in 1989 and the CROWN® aerator co-developed with TU Darmstadt — that enable self-acting, energy-free or low-energy operation in stormwater and wastewater applications. More than 150 CROWN® aerator installations have been delivered globally, and the 2025 commissioning of a 400,000 PE SBR plant near Mexico City represents the largest single project in the company's history.

The business model is project-based, combining one-time equipment sales (mechanical/electrical throttle devices, flushing gates, screens, aerators, and turnkey SBR plants) with recurring revenue from installation services, scheduled maintenance contracts, hydraulic and dry calibration services required under German EKVO and SüwVO Abw regulations, and complaint handling. Pricing is quote-based and project-specific, with multi-year contract cadence. Biogest sells primarily through direct enterprise engagement with municipal authorities and engineering consultants, supplemented by an international distribution partner network covering more than 20 countries across Europe, the Middle East, China, and North America. Its core customer segment is municipal water utilities and governmental water authorities, with secondary exposure to commercial facilities requiring autonomous sewage treatment. Marketing is conducted principally through industry trade shows (including IFAT Munich), professional association memberships (DWA, German Water Partnership), and technical content rather than digital channels.

The company operates as a German Aktiengesellschaft (AG) with approximately 40 employees including engineers, technicians, CAD draughtsmen, assembly and administration staff, holds ISO 9001:2015 certification from TÜV SÜD obtained in January 2020, and has no disclosed parent company, institutional investors, or external funding rounds.

Name

Biogest AG

Legal name

Biogest AG

Website

https://biogest.de

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

11–50 employees

Short description

Biogest AG is a privately held German specialty manufacturer, founded in 1976 and based in Taunusstein, that designs and produces stainless steel equipment for municipal rainwater management, flood protection, and wastewater treatment. It serves water utilities and government authorities across more than 20 countries via direct sales and a distribution partner network.

Ownership category

akta.pro rank

Product category

Municipal Water and Wastewater Treatment Equipment

NAICS

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

SIC

Water Supply (4941), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)

akta.pro secondary industries

Water Treatment Plant Construction (Drinking Water) (IMAFAGAA), Water Systems & Treatment (Pumps/Boilers/Water Heaters/Filtration) (IMAIABAK), Separation & Filtration Equipment (Filters, Centrifuges, Membranes) (IMAHAEAB)

Keywords

• Municipal water infrastructure
• Wastewater treatment systems
• Rainwater management equipment
• Flood protection technology
• Stainless steel environmental technology

Headquarters

HQ city

Taunusstein

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Equipment Sales: Sale of stainless steel water management equipment including flow control systems, aerators, screens, flush gates, and complete treatment plants. Products are manufactured in Germany with prices determined by project specifications and scope.
2. Installation Services: Professional mounting services performed by trained service personnel including functional testing, system instruction, and initial acceptance documentation.
3. Maintenance Services: Regular inspection and maintenance services with both one-time and contract-based options. Annual maintenance appointments with detailed service reports.
4. Calibration Services: Hydraulic and dry calibration of throttle devices as required by self-regulation ordinance (EKVO) and self-monitoring ordinance sewer (SüwVO Abw) for new clarifiers, storage canals and rain retention basins.
5. Complaint Handling: Product complaint processing and resolution services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Biogest AG designs, manufactures, and supplies stainless steel environmental technology equipment for municipal water management. Its product range includes ALPHEUS® mechanical and electrical flow control devices for rainwater management, SBR (Sequencing Batch Reactor) wastewater treatment plants including the containerized PURITAINER® mobile system, CROWN® surface aerators and decanters, flood protection systems, storm screens, vacuum and gate flushing systems, and filtration sack dewatering equipment. The company provides complete lifecycle services including plant planning, equipment supply, installation, commissioning, maintenance, and hydraulic calibration for municipalities and water authorities in over 20 countries.

Product overview

Biogest AG offers a comprehensive portfolio of mechanical and physical environmental technology products for water infrastructure, focusing on rainwater management and wastewater treatment. The product range includes flow control devices (ALPHEUS® series), flushing systems (Vacuum, Gate, and Channel Flushing), solid retention screens (Storm Screens), aeration equipment (CROWN® series), and treatment plants (SBR, PURITAINER). These products serve municipal and industrial water management applications including flood protection, flow regulation, wastewater treatment, and water aeration.

Differentiator

Problem solved

Functional benefit

Brands

• ALPHEUS®: Product line of mechanical flow limiters and throttle devices for rainwater management systems, including models AT, AS, AA, AH, and SWDS.
• CROWN®
• PURITAINER®

Products and services

• ALPHEUS® Type AT Flow Limiter Self-acting mechanical flow limiter for rainwater drainage control. The ALPHEUS® Type AT maintains constant throttle flow independent of water level, with self-regenerating functionality for clogging prevention. Available in nominal widths DN 100 to DN 500 for flow rates from 5 l/s to 438 l/s. Designed for municipal rainwater management applications.
• ALPHEUS® Type AS / AA / AH Flow Control Devices

Quantifiable outcome

• Up to 90% dry matter achieved in sludge dewatering after two months storage
• +4 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

14 partnerships are on record, tiered core, major, regional and minor.

• DWA (German Association for Water, Wastewater and Waste)coreStrategic or Co-development PartnerProfessional association membership guaranteeing high level of professional competence and permanent exchange with industry peers. DWA sets technical standards for water management in Germany.
• German Water PartnershipcoreStrategic or Co-development PartnerNetwork organization for the water sector promoting German water expertise internationally and facilitating cooperation between water industry stakeholders.
• ESEP Environmental Technologies (Netherlands)majorChannel Partner/ Reseller/ DistributorDistribution partner for Netherlands and Belgium. Located at Celsiusstraat 20, NL-6003 DG Weert. Handles sales and support for BIOGEST products in the Benelux region.
• Eurotran Spolka z.o.o. (Poland)majorChannel Partner/ Reseller/ DistributorDistribution partner for Poland. Located at ul Pawla Zolotowa 16, PL-60408 Poznan. Secured major Łódź stormwater storage project.
• Hidrostank (Spain)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Spain and Portugal. Located at Pol. Industrial la Nava Calle 15, ES-31300 Tafalla.
• Krüger A/S (Denmark)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Denmark. Located at Gladsayevej 363, DK-2860 Soborg.
• Pozzoli Depurazione Srl (Italy)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Italy. Located at Via Pizzo, 20/e, IT-23020 Prata Camportaccio SO.
• PWL Anlagentechnik Handelsgesellschaft m.b.H. (Austria)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Austria. Located at Wiesingerstraße 8, A-4820 Bad Ischl.
• Romag Aquacare AG (Switzerland)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Switzerland. Located at Birchstrasse 28, CH-3186 Düdingen.
• ROMAG France (France)regionalChannel Partner/ Reseller/ DistributorDistribution partner for France. Located at 40, rue de Bruxelles, FR-69100 VILLEURBANNE.
• Tawajer (Saudi Arabia)regionalChannel Partner/ Reseller/ DistributorDistribution partner for Saudi Arabia. Located in Jeddah.
• WASCH Environmental Engineering Co., LTD (China)majorChannel Partner/ Reseller/ DistributorDistribution partner for China. Located at Room 1206-1207, No. 481-485, Cheer Day Building, South Huaqing Road, Qingpu District, CN-201799 Shanghai. Handles major orders including flushing systems deliveries.
• WSG & Solution Inc. (USA/Canada)regionalChannel Partner/ Reseller/ DistributorDistribution partner for USA and Canada. Located at 160 Commerce Drive, Suite 100, Montgomeryville, PA 18936.
• Technical University of DarmstadtminorStrategic or Co-development PartnerCollaborative development partner for CROWN® Surface Aerator technology, contributing to the design and engineering of the aeration system.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Pentair plc: Global water solutions company providing flow, filtration, and treatment products for residential, commercial, and industrial applications. Overlaps with Biogest in flow control and water treatment equipment serving municipal and commercial customers, but at much larger scale.
• Veolia Water Technologies: Global water treatment solutions provider within Veolia, offering municipal and industrial wastewater treatment plants, equipment, and services. Broadly competes with Biogest in SBR/biological treatment plants but at multi-billion-euro scale with bundled service offerings.
• Xylem Inc. Global water technology leader offering pumps, treatment, metering, and digital solutions across the municipal water cycle. Overlaps with Biogest's SBR treatment plants, flow control, and aeration equipment but operates at vastly larger scale with bundled software/service offerings.

Direct peers

• Mueller Water Products: North American manufacturer of water infrastructure products including valves, hydrants, and flow control devices for municipal water and wastewater utilities. Directly comparable in flow control/regulator products and municipal customer base.
• KSB SE & Co. KGaA: German manufacturer of pumps, valves, and related systems for water/wastewater and industrial applications. Closely comparable as a DACH-based, privately-influenced pump and water infrastructure equipment maker serving municipal utilities.
• Sulzer Ltd: Swiss industrial engineering company providing pumps, mixers, and process equipment for water and wastewater applications. Comparable mid-sized specialty equipment maker serving municipal utilities with comparable engineering content and project-based sales.
• VAG-Armaturen GmbH: German manufacturer of valves, penstocks, and flow control devices for water and wastewater infrastructure. Directly comparable to Biogest's ALPHEUS® throttle/flow control products in product category and municipal utility customer base.
• Wilo SE: German premium pump manufacturer specializing in building services, water management, and industrial applications. Highly comparable as a Dortmund-based, family-owned, German-engineering pump and water technology brand serving municipal and commercial customers.

Emerging players

• Fluence Corporation: Provider of decentralized and modular water and wastewater treatment solutions including containerized plants. Directly comparable to Biogest's PURITAINER® mobile SBR product line and emerging-market growth profile.
• Aqua-Aerobic Systems: US-based manufacturer of aeration and biological wastewater treatment equipment including SBR systems. Directly comparable to Biogest's CROWN® aerator and SBR treatment plant portfolio in product category and municipal target market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/biogest-ag

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Biogest AG