Who we are

Wastewater Solutions Group GmbH

Wastewater Solutions Group GmbH (WWSG) is a global company based in Graz. WWSG ist a well-known leading provider of large-scale solutions for mobile water, wastewater and sludge treatment for the defense and civil industries. 

Since its founding in 2009, the company has constantly developed and improved. WWSG has continously expanded and enhanced its product portfolio trough ongoing innovation. 

Wastewater Solutions Group GmbH offers comprehensive solutions for a sustainable water cycle, extensively advice and processing from a single source. 


As WWSG, we want to make a significant contribution to cleaning all types of wastewater with our efficient solutions and our professional management in order to reuse it and not pollute the environment.


We offer our customers a unique service experience and, after detailed evaluation, develop tailor-made concepts for economic and ecological advantages for municipalities, organizations and companies.

Our Values


We build long-term relationships with our customers, partners, suppliers and employees. Working with industry experts who are committed to excellent service.


We strive to provide the latest sustainable wastewater treatment technologies worldwide. We see our responsibility not only in offering high-quality technology, but also in creating awareness for the sustainable use of water.


We attach great importance to open dealings with our business partners, stakeholders and employees. Only through sincere and honest communication can problems be solved and conflicts avoided.

History of the Wastewater Solutions Group GmbH

  • 2009 Founding of the WWSG
  • 2010 Construction of the first small and compact wastewater treatment plants in an industrial environment
  • 2011 Mgmt Buy-Out by Ing. Reinhard Pregartbauer | GINZLER Group takes a stake in WWSG | Relocation of the company headquarters to Bachmanning, 4672 Austria
  • 2012 Construction of the first container sewage treatment plant with MBR system in 20 ft. container (capacity 146 m3/day, 960 PE)
  • 2013/14 International projects, expansion
  • 2015 WWSG operational management of stationary container sewage treatment plants in the municipal area in Austria (24/7)
  • 2018 Strong expansion in the military sector and WWSG operational management of stationary container treatment and water treatment plants, internationally
  • 2020 ISO 9001 certification
  • 2021 Development of a mobile wastewater monitoring for COVID analysis in cooperation with the UNI Innsbruck, Austria
  • 2022 Change of managing director after the late CEO Ing. Reinhard Pregartbauer
  • 2022 Further expansion in the business areas: mobile solutions, industrial wastewater technology and operational management
  • 2023 PAPP MLS GmbH, based in Munich, becomes the new majority owner of WWSG | Relocation of company headquarters to Graz

The internationally active GIS Aqua Group is a renowned and reliable partner in water treatment. The company, headquartered in Amstetten, Austria, emerged from the two experienced EPC organizations Ginzler Stahl- & Anlagenbau and Aqua Engineering North Africa.

GIS Aqua offers solutions in the areas of wastewater, drinking water and desalination. The portfolio also includes solutions for storing and pumping water, including retention and storage basins, pumping stations and hydropower plant systems.

GIS Aqua also has excellent knowledge in the production of key components.

Thanks to its experienced view of overall functionality and high quality requirements, the company can boast numerous reference projects.

Management of the Wastewater Solutions Group GmbH

Ing. Hubert Ginzler


T: +43 7472 62779-72
M: hubert.ginzler@gisaqua.com

DI Dr. Peter Kerschberger

Managing Partner

T: +43 316 231603-11
M: peter.kerschberger@wastewater.at

Passbild Rüdiger Föll

Rüdiger Föll

Managing Partner, PAPP MLS GmbH

T: +49 179 5906060
M: r.foell@papp-mls.com

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