ZIMMERMANN MANTZ in Osterode am Harz
With its location in Osterode am Harz, the ZIMMERMANN Group also has a presence in southern Lower Saxony. MANTZ Abfall-Abwasser GmbH has been part of the ZIMMERMANN Group since 2021 and has been providing services related to waste management, wastewater treatment, and technical services to residential customers, commercial businesses, industrial companies, and public sector clients in Osterode am Harz and the surrounding region since 1997.
Thanks to its location in the Harz region, the facility supports customers in Osterode, Göttingen, Northeim, and other regions of Lower Saxony with a variety of tasks related to waste, wastewater, and infrastructure. Services are provided in accordance with the specific task at hand, the technical requirements, and applicable legal regulations.

Waste and Wastewater Solutions for Lower Saxony
MANTZ Abfall-Abwasser GmbH provides services in the fields of waste management and wastewater treatment. Depending on the type of material, its composition, and its legal classification, waste and wastewater are routed to appropriate treatment, recycling, or disposal methods. The processes available in each individual case depend on the properties of the respective material stream, the acceptance conditions, and the available permits.


Sewer and Pipe Cleaning in Osterode am Harz
One of the main areas of focus at the Osterode location is sewer and pipe cleaning. Using appropriate flushing, suction, and cleaning technology, deposits and blockages are removed within the agreed-upon scope of services. The scope and methods are tailored to the specific system and its assessed condition. In addition, MANTZ performs CCTV sewer inspections to document the condition of pipes and sewers and to identify any abnormalities.
- Sewer cleaning
- Pipe cleaning
- TV Channel Surveys
- TV Documentary on Canals
- Leak Tests
- Cleaning Oil and Grease Separators
Container Services and Waste Management Solutions
For construction projects, renovation work, and industrial and commercial operations, MANTZ offers container solutions for the collection of appropriate waste and recyclables. Containers are delivered and picked up in coordination with the customer and in accordance with the specific requirements of each job.
In addition, MANTZ provides support for the collection and treatment of hazardous and non-hazardous waste. These services are carried out in accordance with applicable legal requirements as well as the respective acceptance and permit conditions.


Recycling Center and Hazardous Waste Disposal
MANTZ operates a recycling center at its Osterode location. There, eligible and accepted recyclables as well as non-recyclable waste are collected, sorted, and prepared for further recycling or treatment . Acceptance is carried out in accordance with the applicable acceptance conditions and legal requirements.
In addition, MANTZ assists customers with the treatment of hazardous waste. The selection of appropriate disposal methods is based on the specific characteristics of the waste as well as the legal and technical framework.
Tank Cleaning and Tank Disposal
Our range of services also includes tank cleaning and tank disposal. The work is planned and carried out in accordance with the specific tank type, its use, and applicable safety requirements. The necessary emptying, cleaning, and disposal steps are tailored to the specific situation.

Overview of Services at the Osterode Location
- Wastewater Technology
Sewer and pipe cleaning, CCTV sewer inspections, sewer documentation, and leak tests. - Separator Service
Cleaning of oil and grease separators according to the specific task at hand. - Container Service
Delivery and pickup of appropriate containers for agreed-upon types of waste and recyclables. - Recycling Center
Receipt, registration, and sorting of suitable waste and recyclables in accordance with the applicable acceptance criteria. - Hazardous Waste
Assessment and organization of appropriate disposal methods based on waste characteristics and permits. - Tank Service
Tank cleaning and tank disposal in accordance with agreed-upon technical and safety requirements.
Certified Specialist Company in Lower Saxony
MANTZ Abfall-Abwasser GmbH is a certified waste management company and a specialized company under the Water Resources Act. Services are provided in accordance with applicable legal requirements, technical specifications, and the relevant permits. The specific scope of services is outlined in the current certificates and documentation.


Part of the ZIMMERMANN Group network
As a company within the ZIMMERMANN Group, MANTZ is integrated into a cross-location network of specialized waste management companies, transportation resources, and treatment facilities. This allows us to evaluate and coordinate different treatment, recycling, or disposal options depending on the material stream and the specific task at hand.
Your contact in Osterode am Harz
Whether it’s sewer cleaning, pipe cleaning, container services, wastewater services, tank cleaning, or hazardous waste disposal: The MANTZ team supports customers in Osterode am Harz, southern Lower Saxony, and the surrounding regions in planning and carrying out agreed-upon tasks related to waste and wastewater.
Mantz Abfall-Abwasser GmbH
The management at the Osterode site


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