Germany's water treatment industry focuses on ensuring clean and safe water through innovative technologies and techniques. It includes public utilities and private companies specializing in wastewater treatment, water purification, and resource management. With increasing awareness of sustainability, these firms are adopting eco-friendly practices and sophisticated technologies to minimize environmental impact. Importantly, many companies are also embracing digitalization trends for efficient monitoring and management of water systems. As climate change compounds water scarcity, a shift toward smarter solutions, recycling, and conservation methods is propelling growth and innovation within the industry.


The water treatment companies listed here vary significantly in size, with employee counts ranging from a small team of 11 to over 10,000. Headquarters are primarily located across different German states, reflecting regional specializations. Established between 1912 and 2021, these companies focus on fields such as wastewater management, drinking water treatment, and advanced water recycling technologies. Beyond offering standard services, their innovative approaches address pressing environmental concerns, positioning them as crucial players in the water treatment ecosystem.


Read on to explore the top water treatment companies in Germany.


Top 21 Water Treatment Companies in Germany


1. REMONDIS Gruppe

  • Website: remondis.de
  • Ownership type: Private
  • Headquarters: Germany
  • Employee distribution: Germany 72%, Poland 9%, France 4%, Other 15%
  • Founded year: 1934
  • Headcount: 10001+
  • LinkedIn: remondis-gruppe

REMONDIS Gruppe, founded in 1934, is a private company based in Germany that specializes in recycling and water management services. With over 10,000 employees, REMONDIS provides essential solutions for municipalities, industries, and private households. Their operations span the globe, with a significant presence in Germany, Poland, and other European countries. The company focuses on waste management, water supply, and wastewater treatment, emphasizing sustainability and environmental protection. REMONDIS operates more than 210 wastewater treatment plants and manages a network of 6,000 kilometers of sewer systems. They are involved in the entire water cycle, from sourcing and treating drinking water to the effective treatment of wastewater, often utilizing innovative technologies to enhance efficiency and reduce environmental impact. Their commitment to resource management is evident in their efforts to recover valuable materials from wastewater and promote the use of recycled water in various applications.


2. EnviroChemie GmbH

  • Website: envirochemie.com
  • Ownership type: Private
  • Headquarters: Rossdorf, Hesse, Germany
  • Employee distribution: Germany 87%, Switzerland 5%, Russia 4%, Other 4%
  • Founded year: 1976
  • Headcount: 1001-5000
  • LinkedIn: envirochemie

EnviroChemie GmbH, based in Rossdorf, Hesse, Germany, is a private company that specializes in industrial water management solutions. Established in 1976, the firm has built a reputation for providing comprehensive services in wastewater treatment, water recycling, and digital monitoring. Their WaterExpert platform exemplifies their commitment to innovation, allowing clients to monitor and optimize their water treatment processes in real-time. EnviroChemie's clientele spans various sectors, including food and beverage, pharmaceuticals, and chemical industries, all of which rely on their expertise to comply with environmental regulations and enhance water usage efficiency. The company is also a member of the EnviroWater Group, which strengthens its capabilities in delivering tailored solutions for industrial water treatment. With a workforce of around 187 employees, EnviroChemie continues to play a significant role in promoting sustainable water practices across Europe and beyond.


3. Bwt Ag

  • Website: bwt-group.com
  • Ownership type: Private
  • Headquarters: Wiesbaden, Hesse, Germany
  • Founded year: 1990
  • Headcount: 1001-5000
  • LinkedIn: bwt-ag

BWT AG, based in Wiesbaden, Hesse, Germany, is a private company founded in 1990. It specializes in water treatment solutions, focusing on innovative technologies for water purification and mineralization. BWT serves a wide array of customers across residential, hospitality, and industrial sectors. Their product lineup includes water filters, softeners, and pool care systems, which are designed to enhance water quality and safety. The company operates an online store for direct consumer sales, making their products accessible to a broader audience. BWT is also committed to sustainability, aiming to conserve water resources and promote responsible usage. Their involvement in various sectors, including pharmaceuticals and biotechnology, highlights their expertise in providing tailored solutions for specific water quality needs. BWT's ongoing investment in research and development further underscores their dedication to advancing water treatment technologies.


4. Taprogge Gesellschaft mbH

  • Website: taprogge.de
  • Ownership type: Private
  • Headquarters: Wetter, North Rhine-Westphalia, Germany
  • Employee distribution: Germany 75%, India 11%, Netherlands 8%, Other 6%
  • Founded year: 1953
  • Headcount: 201-500
  • LinkedIn: taprogge-gmbh

Taprogge Gesellschaft mbH, founded in 1953 and based in Wetter, North Rhine-Westphalia, Germany, is a private clean-tech company that specializes in energy efficiency and water treatment solutions. The company offers a range of products and services designed to optimize cooling systems, seawater desalination, and wastewater management for power plants and industrial clients. Taprogge's focus on improving operational efficiency while minimizing environmental impact is evident in their extensive portfolio, which includes innovative technologies for water intake, filtration, and cooling pipe cleaning. With a workforce of approximately 201-500 employees and a significant international presence, including subsidiaries in India, the Netherlands, and the USA, Taprogge has established itself as a key player in the water treatment industry. Their commitment to sustainability is reflected in their efforts to reduce wastewater and recover valuable resources, addressing critical challenges in water scarcity and resource conservation.


5. RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbH


RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbH, based in Neunkirchen, North Rhine-Westphalia, Germany, has been operational since 1912. This private water utility company serves approximately 900,000 residents and businesses in the western Ruhr area and adjacent Münsterland. RWW is dedicated to ensuring high water quality and environmental protection through a range of services, including comprehensive water quality analysis and management consulting. The company operates six water treatment plants and maintains a vast network of 3,000 kilometers of pipelines, delivering around 70 million cubic meters of drinking and utility water annually. RWW's in-house laboratory conducts over 150,000 analyses each year, underscoring their commitment to providing safe and reliable drinking water. Their initiatives also include resource protection and innovative water management solutions, making them a notable entity in the water treatment industry.


6. WTE Wassertechnik GmbH

  • Website: wte.de
  • Ownership type: Private
  • Headquarters: Essen, North Rhine-Westphalia, Germany
  • Employee distribution: Kuwait 49%, Germany 33%, Bahrain 6%, Other 11%
  • Founded year: 1984
  • Headcount: 501-1000
  • LinkedIn: wte-wassertechnik-gmbh

WTE Wassertechnik GmbH, based in Essen, North Rhine-Westphalia, Germany, is a private environmental service provider established in 1984. The company specializes in comprehensive water management solutions, including the design, construction, and operational management of wastewater treatment and drinking water supply systems. With a workforce of approximately 275 employees, WTE operates not only in Germany but also in several international markets, including Kuwait, Bahrain, and Croatia. Their commitment to sustainability is evident in their projects, which aim to optimize water resources and ensure efficient treatment processes. WTE's services extend to plant design, financing, and digital products, reflecting their innovative approach to water management. The company has successfully treated millions of cubic meters of wastewater daily, benefiting a significant population through their operational management of water treatment facilities. Their focus on environmental responsibility and technological advancement positions them as a noteworthy player in the water treatment sector.


7. ATB WATER GmbH

  • Website: atbwater.com
  • Ownership type: Private
  • Headquarters: Porta Westfalica, North Rhine-Westphalia, Germany
  • Employee distribution: Germany 72%, Belgium 14%, Switzerland 14%
  • Founded year: 1999
  • Headcount: 51-200
  • LinkedIn: atbwater

ATB WATER GmbH, based in Porta Westfalica, North Rhine-Westphalia, Germany, specializes in wastewater treatment solutions. Founded in 1999, the company has carved out a niche in sewage technology and small sewage treatment plants. They provide essential services to municipalities and various industries, focusing on effective wastewater management and environmental protection. ATB WATER emphasizes high-quality standards and collaborates closely with customers to develop sustainable systems. Their product offerings include semi-central wastewater treatment solutions, aeration technology, and small sewage treatment plants, among others. The company has also been involved in international projects, showcasing its commitment to addressing global water challenges. With a workforce of around 30 employees, ATB WATER continues to innovate and expand its services, contributing significantly to the water treatment sector.


8. Hydro-Elektrik GmbH

  • Website: hydrogroup.de
  • Ownership type: Private
  • Headquarters: Ravensburg, Baden-Württemberg, Germany
  • Employee distribution: Germany 100%
  • Founded year: 1971
  • Headcount: 51-200
  • LinkedIn: hydro-elektrik-gmbh

Hydro-Elektrik GmbH, based in Ravensburg, Baden-Württemberg, Germany, has been a significant player in the water treatment industry since its founding in 1971. The company specializes in providing tailored solutions for drinking water, process water, and swimming pool water treatment. Their clientele includes municipalities, various industries, and businesses in the food and beverage sector, all of whom depend on Hydro-Elektrik's expertise for effective water management. The company emphasizes sustainability and efficiency, striving to minimize chemical use and optimize energy consumption in their systems. Their product offerings include stainless steel drinking water tanks, ozonators, filtration systems, and advanced water treatment plants utilizing ultrafiltration and nanofiltration technologies. Hydro-Elektrik GmbH is dedicated to delivering high-quality, innovative, and sustainable water treatment solutions, making them a relevant entity in the water treatment sector.


9. Hydreatio

  • Website: hydreatio.com
  • Ownership type: Private
  • Headquarters: Munich, Bavaria, Germany
  • Employee distribution: Germany 88%, United Kingdom (UK) 12%
  • Founded year: 2021
  • Headcount: 11-50
  • LinkedIn: hydreatio-de

Hydreatio, based in Munich, Bavaria, Germany, specializes in water sustainability solutions. Founded in 2021, the company has quickly established itself by offering innovative products and advisory services tailored to industries such as agriculture, healthcare, and manufacturing. Their focus is on enhancing water management practices, which not only helps clients reduce operational costs but also minimizes their environmental footprint. Hydreatio's product portfolio includes advanced disinfection technology and membrane filtration systems, designed to address various water quality challenges. Additionally, their advisory services assist businesses in optimizing their water usage, ensuring compliance with sustainability regulations, and improving overall operational efficiency. With a small but dedicated team, Hydreatio is committed to making a significant impact in the water treatment sector.


10. PWT Wasser- und Abwassertechnik GmbH

  • Website: pwt.de
  • Ownership type: Private
  • Headquarters: Zwingenberg, Hesse, Germany
  • Employee distribution: Germany 43%, Morocco 16%, Saudi Arabia 10%, Other 31%
  • Founded year: 2001
  • Headcount: 51-200
  • LinkedIn: pwt-wasser--und-abwassertechnik-gmbh

PWT Wasser- und Abwassertechnik GmbH, based in Zwingenberg, Hesse, Germany, specializes in water treatment solutions. Established in 2001, the company has grown to employ between 51 and 200 people, showcasing its capacity to manage significant projects. PWT focuses on the planning, construction, and operation of water treatment facilities, catering to both industrial clients and public authorities. Their services include the construction of treatment plants, project management as a general contractor, and operational management of water treatment systems. PWT is involved in various applications, including drinking water, wastewater, process water, and water recycling. The company prides itself on delivering tailored solutions that meet legal requirements and customer needs, emphasizing quality, efficiency, and sustainability. With a presence in multiple countries, PWT demonstrates its capability to address global water treatment challenges effectively.


11. INVENT Umwelt- und Verfahrenstechnik AG


INVENT Umwelt- und Verfahrenstechnik AG, based in Erlangen, Bavaria, Germany, is an environmental engineering firm established in 1995. The company specializes in innovative technologies for water and wastewater treatment, providing tailored solutions for both municipal and industrial clients. Their product offerings include advanced mixing and aeration systems, solid-liquid separation technologies, and comprehensive engineering and consulting services. With a focus on sectors such as food and beverage, pharmaceuticals, and chemical processing, INVENT demonstrates a commitment to enhancing water management efficiency and compliance with regulatory standards. The company operates solely in Germany and employs a team of 51-200 professionals dedicated to developing energy-efficient and reliable water treatment solutions.


12. ELIQUO STULZ GmbH

  • Website: eliquostulz.com
  • Ownership type: Private
  • Headquarters: Bonndorf, Baden-Württemberg, Germany
  • Employee distribution: Germany 100%
  • Founded year: 2014
  • Headcount: 501-1000
  • LinkedIn: eliquo-stulz-gmbh

ELIQUO STULZ GmbH, founded in 2014 and based in Bonndorf, Baden-Württemberg, Germany, is a private company that specializes in municipal water and wastewater solutions. With a workforce of around 22 employees, the company operates primarily in the DACH region and Luxembourg. ELIQUO STULZ provides a comprehensive range of services, including wastewater treatment, sludge processing, and drinking water production. Their clientele mainly consists of municipalities and public entities that require sustainable water management solutions. The company is committed to innovative technologies and efficient plant construction, which are crucial for addressing the growing challenges in water treatment. As a member of the Eliquo Water Group, ELIQUO STULZ benefits from shared expertise and resources, enhancing its capabilities in the water treatment sector. Their focus on environmental sustainability and energy efficiency positions them well within the industry.


13. Eliquo

  • Website: eliquowater.com
  • Ownership type: Family Owned
  • Headquarters: Geisenheim, Hesse, Germany
  • Employee distribution: Germany 100%
  • Founded year: 2014
  • Headcount: 501-1000
  • LinkedIn: eliquo-water-group

Eliquo Water Group, based in Geisenheim, Hesse, Germany, is a family-owned company that has been making strides in the water treatment sector since its establishment in 2014. The firm specializes in municipal water and wastewater solutions, offering a comprehensive range of services that include the construction of treatment plants, sewage sludge management, and engineering services. With a workforce of over 500 employees, Eliquo prides itself on its technical expertise and commitment to delivering high-quality results for its municipal clients across Europe. The company is part of the SKion Water GmbH group, which consolidates its activities in the municipal water treatment field. Eliquo is dedicated to sustainable practices, focusing on energy efficiency and resource recovery in water management. Their innovative approach is evident in their proprietary technologies, which aim to enhance the effectiveness of water treatment processes. Eliquo's strong ethical standards and long-term vision further solidify its position as a reliable partner in the water treatment industry.


14. H.Preiss International

  • Website: hpreiss.de
  • Ownership type: Private
  • Headquarters: Ipsheim, Bavaria, Germany
  • Employee distribution: Austria 75%, Germany 25%
  • Founded year: 1998
  • Headcount: 51-200
  • LinkedIn: h-preiss-international

H.Preiss International, founded in 1998 and based in Ipsheim, Bavaria, Germany, is a private company specializing in water treatment. With a workforce of around 16 employees, the firm focuses on providing high-quality drinking water solutions and environmental sustainability services. They cater to a variety of clients, including households, businesses, and organizations, offering innovative water purification technologies and expert consultation to ensure safe and clean water. The company is also known for its Green Drop award program, which recognizes outstanding contributions to environmental protection and sustainability. H.Preiss International emphasizes the importance of water quality and actively promotes initiatives that encourage responsible water use and conservation. Their services include comprehensive water checks and tailored solutions to meet individual client needs, showcasing their commitment to customer satisfaction and environmental stewardship.


15. MionTec GmbH

  • Website: miontec.de
  • Ownership type: Private
  • Headquarters: Leverkusen, North Rhine-Westphalia, Germany
  • Employee distribution: Germany 100%
  • Founded year: 1998
  • Headcount: 11-50
  • LinkedIn: miontec-gmbh

MionTec GmbH, founded in 1998 and based in Leverkusen, North Rhine-Westphalia, Germany, is a private company specializing in water treatment and environmental technology. With a workforce of 11 to 50 employees, MionTec focuses on providing innovative solutions for businesses requiring efficient water treatment and process optimization. Their offerings include process development, pilot plants for rent or purchase, and advanced technologies like Mi-Vision, which enhances the monitoring and management of water treatment processes. MionTec serves a variety of industries, emphasizing their expertise in ion exchange, nanofiltration, and environmental remediation. Their commitment to research and development, along with a strong customer-centric approach, positions them as a valuable partner in the water treatment industry.


16. Hölscher


Hölscher Wasserbau, founded in 1959 and based in Haren, Lower Saxony, Germany, is a family-owned company that specializes in water management and environmental technology. With a workforce of around 500 to 1000 employees, Hölscher provides a variety of services, including groundwater management, well construction, and tailored water treatment solutions for both construction and industrial applications. Their clientele includes construction firms and municipalities, highlighting their role in sustainable and efficient water management practices. The company is committed to protecting water resources and aims to return extracted water back to nature, showcasing their dedication to environmental sustainability. Their projects span across various sectors, including significant infrastructure developments, which further demonstrates their expertise and relevance in the water treatment industry.


17. Wasserwerke Westfalen GmbH


Wasserwerke Westfalen GmbH, founded in 2001 and based in Wickede, North Rhine-Westphalia, Germany, is a private water supply company dedicated to delivering high-quality drinking water. Serving around 1.5 million residents in the southern Münsterland, eastern Ruhr area, and northern Sauerland, the company operates six waterworks that treat water sourced from the Ruhr River. Wasserwerke Westfalen emphasizes sustainable practices, ensuring that water resources are managed responsibly while maintaining compliance with health and safety standards. Their water treatment processes include advanced techniques such as artificial groundwater recharge and multi-stage purification, which are designed to meet the rigorous requirements set forth by health authorities. The company also engages in environmental protection initiatives, demonstrating a commitment to safeguarding water quality and promoting ecological sustainability.


18. Klaro

  • Website: klaro.eu
  • Ownership type: Private
  • Headquarters: Bayreuth, Bavaria, Germany
  • Employee distribution: Germany 61%, Norway 20%, Georgia 20%
  • Founded year: 2008
  • Headcount: 11-50
  • LinkedIn: klaro-gmbh

Klaro GmbH, based in Bayreuth, Bavaria, Germany, is a private company founded in 2008. It specializes in wastewater treatment solutions, particularly small wastewater treatment plants and separation technology. Klaro serves various sectors, including residential, commercial, and industrial applications, with a strong emphasis on efficiency and sustainability. The company has developed a range of products, including systems for domestic wastewater from single-family homes to larger municipal needs, and has established a presence in over 80 countries. With a workforce of around 41 employees, Klaro is dedicated to providing high-quality, flexible solutions tailored to customer requirements. Their innovative approach is highlighted by their patented technologies and a commitment to continuous improvement in wastewater management practices.


19. H2O GmbH. Leaders in Zero Liquid Discharge


H2O GmbH, based in Steinen, Baden-Württemberg, Germany, is a private company founded in 1999 that specializes in wastewater treatment solutions. The company is recognized for its innovative VACUDEST vacuum distillation systems, which are designed to optimize wastewater management for industrial clients. H2O GmbH serves a variety of sectors, including automotive, aviation, and chemicals, helping these industries enhance their sustainability efforts and comply with stringent environmental regulations. The company also offers consulting services to analyze wastewater and develop tailored solutions, ensuring that clients can effectively manage their water resources. With a workforce of approximately 78 employees, H2O GmbH has established itself as a competent partner in the field of water treatment, focusing on reducing fresh water usage and minimizing disposal costs through advanced technology.


20. ProMinent Group

  • Website: prominent.com
  • Ownership type: Private
  • Headquarters: Heidelberg, Baden-Württemberg, Germany
  • Employee distribution: Germany 62%, Malta 4%, Thailand 3%, Other 32%
  • Founded year: 1960
  • Headcount: 1001-5000
  • LinkedIn: prominentgroup

ProMinent Group, headquartered in Heidelberg, Baden-Württemberg, Germany, is a private company that specializes in metering technology and water treatment solutions. Established in 1960, ProMinent has grown to employ approximately 1,499 individuals, with a significant portion of its workforce based in Germany. The company offers a comprehensive range of products, including metering pumps, disinfection systems, and various water treatment technologies. Their solutions are utilized across multiple sectors, including chemical processing, food and beverage production, and hospitality, ensuring safe and efficient water treatment processes. ProMinent is dedicated to innovation and sustainability, focusing on environmentally friendly practices in their operations. Their global reach, with a presence in countries such as Malta, Thailand, and China, underscores their commitment to providing effective water treatment solutions worldwide.


21. Schweitzer-Chemie GmbH


Schweitzer-Chemie GmbH, based in Freiberg, Baden-Württemberg, Germany, specializes in water treatment solutions. Established in 2001, the company has grown to serve over 10,000 clients across various industries, emphasizing quality, reliability, and environmental responsibility. Their offerings include chemical products for water treatment, technologies for water purification, and comprehensive technical support. Schweitzer-Chemie also provides system consulting and water data management, ensuring that clients receive tailored solutions for their specific needs. The company prides itself on its commitment to hygiene and safety in water systems, and it actively engages in training and education within the industry. With a workforce of around 211 employees, Schweitzer-Chemie maintains a robust presence in the market, supported by a network of over 50 service locations throughout Germany.



Water Treatment Insights: Key Companies in Germany


CompanyHeadquarterSizeFoundedOwnership
REMONDIS GruppeGermany10001+1934Private
EnviroChemie GmbHRossdorf, Hesse, Germany1001-50001976Private
Bwt AgWiesbaden, Hesse, Germany1001-50001990Private
Taprogge Gesellschaft mbHWetter, North Rhine-Westphalia, Germany201-5001953Private
RWW Rheinisch-Westfälische Wasserwerksgesellschaft mbHNeunkirchen, North Rhine-Westphalia, Germany201-5001912Private
WTE Wassertechnik GmbHEssen, North Rhine-Westphalia, Germany501-10001984Private
ATB WATER GmbHPorta Westfalica, North Rhine-Westphalia, Germany51-2001999Private
Hydro-Elektrik GmbHRavensburg, Baden-Württemberg, Germany51-2001971Private
HydreatioMunich, Bavaria, Germany11-502021Private
PWT Wasser- und Abwassertechnik GmbHZwingenberg, Hesse, Germany51-2002001Private
INVENT Umwelt- und Verfahrenstechnik AGErlangen, Bavaria, Germany51-2001995Private Equity
ELIQUO STULZ GmbHBonndorf, Baden-Württemberg, Germany501-10002014Private
EliquoGeisenheim, Hesse, Germany501-10002014Family Owned
H.Preiss InternationalIpsheim, Bavaria, Germany51-2001998Private
MionTec GmbHLeverkusen, North Rhine-Westphalia, Germany11-501998Private
HölscherHaren, Lower Saxony, Germany501-10001959Family Owned
Wasserwerke Westfalen GmbHWickede, North Rhine-Westphalia, Germany11-502001Private
KlaroBayreuth, Bavaria, Germany11-502008Private
H2O GmbH. Leaders in Zero Liquid DischargeSteinen, Baden-Württemberg, Germany51-2001999Private
ProMinent GroupHeidelberg, Baden-Württemberg, Germany1001-50001960Private
Schweitzer-Chemie GmbHFreiberg, Baden-Württemberg, Germany201-5002001Private


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