Iat-ingenieurberatung Gmbh

What Iat-ingenieurberatung Gmbh does

iat-Ingenieurberatung GmbH is a privately held German engineering consultancy founded in 1987 by Dr.-Ing. W. Maier and headquartered in Stuttgart-Weilimdorf, Baden-Württemberg. The firm delivers independent planning, construction management, and operational advisory services for wastewater treatment infrastructure, organized across six practice areas: municipal wastewater treatment (Kommunale Abwasserreinigung), advanced treatment including 4th-stage micropollutant elimination via activated carbon adsorption and ozonation (Weitergehende Abwasserbehandlung), industrial wastewater treatment and recycling (Industrielle Abwasserreinigung), renewable energy consulting (Erneuerbare Energien), long-term operational support (Beratung + Betreuung), and legal/regulatory compliance services (Recht + Betrieb). Project execution follows all HOAI performance phases 1-9.

The firm serves two primary verticals — German municipalities and public utilities, and industrial clients requiring wastewater recycling and zero-discharge solutions — primarily across Baden-Württemberg and adjacent federal states. Revenue is generated through project-based engineering consulting fees, with initial engagements typically priced at 40,000-80,000 euros and complex construction-management projects reaching multi-million euro values over 12-month-to-multi-year cycles, supplemented by recurring long-term maintenance contracts. The company is led by two Managing Directors (Rainer Röseler and Dr. Martin Wett) plus two Prokuristen heading Planning & Construction and Operations Support respectively, and has operated as an independent member of the HOLINGER Gruppe since 2023. The company employs between 11-50 staff and currently lists multiple open engineering and leadership-track positions.

Name

Iat-ingenieurberatung Gmbh

Legal name

iat - Ingenieurberatung GmbH

Website

https://iat-stuttgart.de

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

iat-Ingenieurberatung is a Stuttgart-based engineering consultancy, founded 1987, providing independent planning, construction management, and operational advisory for municipal and industrial wastewater treatment plants across Baden-Württemberg, with multi-year maintenance contracts and HOLINGER Gruppe affiliation since 2023.

Ownership category

akta.pro rank

Product category

Wastewater Treatment Engineering Services

NAICS

Sewage Treatment Facilities (221320), Remediation and Other Waste Management Services (5629), Remediation Services (56291)

SIC

Services-Commercial Physical & Biological Research (8731), Hazardous Waste Management (4955)

akta.pro primary industry

Industrial Wastewater & Effluent Treatment Services (BPALAHAD)

akta.pro secondary industries

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ), Water & Wastewater Compliance (NPDES/Stormwater, Pretreatment, Drinking Water/SDWA) (EUAHABAB), Operational Controls, SOPs & Environmental Work Instructions (EUAHAIAJ)

Keywords

• Wastewater treatment consulting
• Municipal wastewater engineering
• Industrial wastewater planning
• Micropollutant elimination
• HOAI engineering services

Headquarters

HQ city

Stuttgart

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Engineering Consulting Services: Project-based engineering consulting fees for planning, construction management, and supervision of wastewater treatment facilities. Projects typically range from 40,000-80,000 euros for initial engagements, with larger projects in the multi-million euro range managed over 12 months to several years.
2. Long-term Maintenance Contracts: Ongoing operational support and consulting contracts providing regular revenue through client retention for troubleshooting, operational optimization, and regulatory compliance support.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels1 record

Core offering

Iat-ingenieurberatung GmbH is an independent engineering consultancy that plans, builds, and operates wastewater and sludge treatment plants for municipalities and industrial clients. The firm delivers services across all HOAI performance phases—from preliminary studies through detailed design, construction supervision, commissioning, and long-term operational support—and has specialized in microollutant elimination (fourth purification stage) and renewable-energy integration since the late 1980s.

Product overview

Iat-ingenieurberatung GmbH is an independent engineering consulting firm founded in 1987, specializing in innovative and sustainable solutions for wastewater treatment and environmental technology. The company operates as a single integrated service offering encompassing six interconnected practice areas: Kommunale Abwasserreinigung (municipal wastewater treatment), Weitergehende Abwasserbehandlung (advanced treatment/4th stage treatment including trace substance elimination via activated carbon and ozonation), Industrielle Abwasserreinigung (industrial wastewater treatment with recycling support), Erneuerbare Energien (renewable energy consulting), Beratung + Betreuung (operational support and consulting), and Recht + Betrieb (legal compliance and safety management). The company plans, builds, and operates treatment facilities across all HOAI performance phases, serving municipalities and industrial clients in Baden-Württemberg and neighboring regions. Since 2023, the company has been a member of the HOLINGER Group.

Differentiator

Problem solved

Functional benefit

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• HOLINGER GruppecoreStrategic or Co-development Partner · 1 January 2023Since 2023, iat-Ingenieurberatung operates as an independent member company within the HOLINGER Gruppe, a larger environmental engineering group. This membership provides strategic alignment and potential synergies in environmental engineering services.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• WSP Global Inc. Global engineering consultancy with a sizeable water and environment practice serving municipal and industrial wastewater clients in Europe. Comparable in end services but much larger and broader in scope.
• Fichtner GmbH & Co. KG: Large German engineering and consulting firm with significant water and environmental infrastructure practice. Comparable in service offering (water/wastewater planning and consulting) but operates at significantly greater scale and geographic breadth.
• Sweco AB: European engineering consultancy with substantial water and environment practice including wastewater treatment planning. Comparable in end service offerings but much larger and operating across multiple European geographies.
• HOLINGER Gruppe: Swiss-headquartered environmental engineering group of which iat is a member since 2023. Provides water, wastewater and environmental engineering services across Europe and is iat's closest affiliate and strategic parent for cross-region work.
• Ramboll Group A/S: International engineering consultancy with a strong water and environment practice serving European municipalities. Comparable in wastewater and water resource consulting services but vastly larger and more geographically diverse.

Direct peers

• GICON Großmann Ingenieur Consult GmbH: German engineering consultancy offering environmental engineering, water and wastewater treatment planning. Comparable as a mid-sized German firm serving municipalities and industrial clients on water infrastructure projects.
• Weber-Ingenieure GmbH: Independent German engineering consultancy providing planning and consulting for water and wastewater treatment plants. Comparable as a similarly positioned mid-sized German firm serving municipal and industrial clients.
• Dahlem Beratende Ingenieure GmbH & Co. KG: Independent German engineering consultancy focused on water, wastewater, and environmental engineering. Comparable as a mid-sized German firm offering planning, construction supervision, and operational consulting for municipal WWT plants.
• Björnsen Beratende Ingenieure GmbH: German engineering consultancy specializing in hydraulic engineering, water resources, and wastewater treatment. Directly comparable as a mid-sized independent German firm serving municipalities and industry in similar HOAI-based project cycles.
• Dr. Born – Dr. Ermel GmbH (afbb): Independent German engineering consultancy focused on wastewater treatment, water resources, and environmental planning. Comparable as a similarly sized, multi-disciplinary German water engineering firm serving municipal clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights3 records

Customer concentration

• LinkedInlinkedin.com/company/iat-ingenieurberatung-gmbh

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 Iat-ingenieurberatung Gmbh