The greywater treatment system construction companies in Nan focus on innovative solutions to recycle and manage wastewater from residential and commercial sources. This industry is crucial for promoting water conservation, especially in urban areas facing water scarcity. Companies in this sector design and build systems that effectively treat greywater, making it suitable for reuse in irrigation or toilet flushing. With increasing global awareness of environmental sustainability, these firms are stepping up to meet regulatory demands and enhance water management practices. The future points toward smarter, more integrated systems that capitalize on technology for efficiency and sustainability.


This list features 24 companies that operate in the greywater treatment sector, varying in size and specialization. They span global locations such as the United States, Denmark, and the UAE. Founded between the 1960s and 2010s, these firms offer a range of products from innovative greywater recycling systems to comprehensive wastewater management solutions. Some companies like Orenco Systems focus on residential projects, while others like Corodex Industries cater to industrial clients, exploring niche areas within the market.


Continue reading to discover the top greywater treatment system construction companies.


Top 24 Greywater Treatment Systems Companies


1. Orenco Systems, Inc.

  • Website: orenco.com
  • Ownership type: Corporate
  • Headquarters: Sutherlin, Oregon, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: August 2024
  • Founded year: 1981
  • Headcount: 201-500
  • LinkedIn: orenco-systems-inc.

Orenco Systems, Inc., founded in 1981 and based in Sutherlin, Oregon, is a wastewater management company that specializes in onsite and decentralized wastewater collection and treatment technologies. The company designs and manufactures a wide range of products aimed at residential, commercial, and municipal customers. Their offerings include advanced secondary treatment systems, watertight fiberglass tanks, and in-tank pumping and filtration systems. Orenco is particularly noted for its AdvanTex treatment systems, which are effective in producing clear effluent suitable for various reuse applications, including greywater. The company has a strong emphasis on environmental standards and compliance, making it a significant player in the wastewater treatment industry. Orenco also provides training and resources to support the implementation and maintenance of their systems, further solidifying their role in the sector.


2. BioMicrobics, Inc. - Better Water. Better World.

  • Website: biomicrobics.com
  • Ownership type: Private
  • Headquarters: Lenexa, Kansas, United States (USA)
  • Employee distribution: United States (USA) 68%, Mexico 11%, Paraguay 11%, Other 11%
  • Founded year: 1996
  • Headcount: 51-200
  • LinkedIn: bio-microbics

BioMicrobics, Inc. - Better Water. Better World. is a private company based in Lenexa, Kansas, founded in 1996. The firm specializes in advanced water and wastewater treatment solutions, offering a range of products tailored for residential, commercial, and municipal applications. Their focus is on effective and sustainable water management, which is increasingly important in today's environmental landscape. BioMicrobics serves a variety of customers, including homeowners, businesses, and local governments, all seeking reliable treatment systems to meet environmental regulations. The company has developed a reputation for its innovative products, such as the BioBarrier® Graywater system and the Recover® system, which are designed specifically for greywater treatment. With a workforce of 51-200 employees, BioMicrobics has established itself as a significant player in the water treatment industry, emphasizing low maintenance and efficient solutions. They have received various awards and recognitions for their contributions to the field, further solidifying their position in the market.


3. BioKube

  • Website: biokube.com
  • Ownership type: Corporate
  • Headquarters: Denmark
  • Employee distribution: Denmark 54%, Paraguay 15%, Bolivia 15%, Other 15%
  • Latest funding: May 2022
  • Founded year: 2003
  • Headcount: 11-50
  • LinkedIn: biokube-a-s

BioKube, founded in 2003 and based in Denmark, is a wastewater treatment company that specializes in innovative solutions for treating and reusing wastewater. With a workforce of 27 employees, the company serves a range of clients, including municipalities, hotels, and industrial sectors. BioKube's product offerings include packaged sewage treatment plants and technologies aimed at converting sludge into energy, which reflects their commitment to sustainability and compliance with environmental standards. The company operates in over 60 countries, demonstrating a significant global presence. Their systems are designed to be energy-efficient and are delivered as plug-and-play solutions, making them accessible for various applications, from small households to large cities. BioKube actively promotes the principles of circular economy and aligns its operations with the United Nations Sustainable Development Goals (SDGs).


4. Corodex Industries

  • Website: corodexindustries.com
  • Ownership type: Private
  • Headquarters: Abu Dhabi, Abu Dhabi, United Arab Emirates (UAE)
  • Employee distribution: United Arab Emirates 100%
  • Founded year: 1974
  • Headcount: 1001-5000
  • LinkedIn: corodex-industries

Corodex Industries, established in 1974, is a private company based in Abu Dhabi, UAE, specializing in water treatment solutions. The firm focuses on water purification, wastewater treatment, and environmental services, catering to both municipal and industrial clients. Corodex offers a range of products, including advanced systems for greywater recycling, such as the EFLOGREY system, which addresses the increasing demand for sustainable water management. The company prides itself on its commitment to quality and sustainability, operating in compliance with international standards like ISO 9001, ISO 14001, and ISO 45001. With a workforce of over 1,000 employees, Corodex has established itself as a key player in the water treatment industry, emphasizing innovation and environmental responsibility in its operations.


5. Calcamite

  • Website: calcamite.co.za
  • Ownership type: Corporate
  • Headquarters: Pretoria, Gauteng, South Africa
  • Employee distribution: South Africa 100%
  • Latest funding: September 2019
  • Founded year: 1967
  • Headcount: 11-50
  • LinkedIn: calcamite

Calcamite, based in Pretoria, Gauteng, South Africa, is a wastewater treatment company that has been operational since 1967. With a workforce of 11 to 50 employees, Calcamite specializes in innovative solutions for managing and recycling wastewater. Their product offerings include wastewater treatment plants, septic tanks, and notably, greywater treatment systems. The company caters to a wide range of clients, including households, schools, and industrial facilities, emphasizing efficient and environmentally-friendly wastewater management. Calcamite is recognized for its commitment to quality, having developed systems that meet the rigorous standards set by the National Water Act 36 of 1998. Their expertise in decentralized packaged wastewater treatment systems allows them to provide customized solutions that are both scalable and adaptable to various site conditions. As a subsidiary of JoJo Tanks (Pty), Calcamite benefits from a strong corporate backing while maintaining a focus on local manufacturing and service delivery.


6. Aquamatch

  • Website: aquamatch.com.tr
  • Ownership type: Private
  • Headquarters: Orhan Gazi, İstanbul, Turkey
  • Employee distribution: Turkey 80%, Pakistan 10%, Bangladesh 4%, Other 7%
  • Founded year: 1989
  • Headcount: 201-500
  • LinkedIn: aquamatchturkey

Aquamatch is a Turkish company established in 1989, based in Istanbul, that specializes in sustainable water treatment solutions. The company operates in 34 countries across four continents, providing a range of products including filtration systems, wastewater treatment, and notably, greywater treatment systems. Aquamatch serves industrial clients, focusing on optimizing water use and ensuring compliance with environmental standards. Their involvement in significant projects, such as providing water treatment plants for major corporations like Coca-Cola, showcases their capability in delivering large-scale solutions. With a workforce of approximately 300 employees, Aquamatch emphasizes research and development to create innovative water systems that cater to the needs of various industries, including power plants and food and beverage sectors. Their commitment to ecological development and social responsibility further enhances their profile in the water treatment industry.


7. Watermaster

  • Website: watermaster.me
  • Ownership type: Private
  • Headquarters: Beirut, Beirut Governorate, Lebanon
  • Employee distribution: United Arab Emirates 33%, Qatar 32%, Lebanon 32%, Other 3%
  • Founded year: 1980
  • Headcount: 501-1000
  • LinkedIn: watermaster-holding

Watermaster, established in 1980 and based in Beirut, Lebanon, is a private company specializing in water treatment and wellness solutions. With a workforce of around 500 to 1,000 employees, the firm has successfully completed over 6,000 projects, catering to clients such as hotels and residential buildings. Watermaster's expertise spans multiple areas, including the design and execution of water-related projects, with a particular focus on water and wastewater treatment. They offer tailored solutions for greywater treatment, which involves the smart separation of water from bathrooms and kitchens for reuse, ensuring hygiene and efficiency. The company operates in several countries, including the UAE, Qatar, and Saudi Arabia, and has built a reputation for quality and customer satisfaction. Their commitment to innovative technologies and sustainable practices positions them as a significant player in the water treatment industry.


8. PACT ENGINEERING Co

  • Website: pactusa.com
  • Ownership type: Private
  • Headquarters: Dubai, Dubai, United Arab Emirates (UAE)
  • Employee distribution: United Arab Emirates 93%, China 5%, Netherlands 2%
  • Founded year: 2000
  • Headcount: 201-500
  • LinkedIn: pact-engineering-fzc

PACT ENGINEERING Co, established in 2000 and based in Dubai, UAE, is a private engineering firm that specializes in water and wastewater treatment solutions. The company offers a comprehensive range of services, including engineering, procurement, construction, and operation & maintenance, catering to both industrial and municipal clients. PACT has developed a strong reputation for delivering effective water management solutions globally. Their product line includes a variety of systems, notably greywater treatment systems, which are designed to efficiently manage and recycle wastewater from domestic sources. With a workforce of 201-500 employees, PACT is well-equipped to handle complex projects and ensure high-quality standards throughout their operations. Their commitment to innovation and quality is underscored by their ISO 9001 certification, reflecting their adherence to rigorous quality management practices.


9. Salher

  • Website: salher.com
  • Ownership type: Private
  • Headquarters: Arganda Del Rey, Madrid, Spain
  • Employee distribution: Spain 87%, Bolivia 7%, Portugal 7%
  • Founded year: 1980
  • Headcount: 51-200
  • LinkedIn: salher

Salher, founded in 1980 and based in Arganda Del Rey, Madrid, Spain, is a private company specializing in water treatment solutions. With a workforce of approximately 51-200 employees, Salher has established itself as a significant player in the water management industry. The company designs and manufactures a wide range of products for urban and industrial water treatment, including systems for greywater reuse. Their clientele spans various sectors, such as hospitality, healthcare, and industrial operations, all of which depend on effective water management. Salher emphasizes innovation and quality, producing their equipment under strict quality control standards. They have a notable international presence, with operations in Spain, Portugal, and Poland, and they serve customers in over 120 countries. Salher also provides comprehensive services, including project management, equipment manufacturing, installation support, and maintenance, ensuring that their solutions meet the specific needs of their clients.


10. Emirates Water Technology CO. LLC

  • Website: ewt.ae
  • Ownership type: Private
  • Headquarters: Abu Dhabi, Abu Dhabi, United Arab Emirates (UAE)
  • Employee distribution: United Arab Emirates 100%
  • Founded year: 2002
  • Headcount: 11-50
  • LinkedIn: emirates-water-technology

Emirates Water Technology CO. LLC, established in 2002, is a private company based in Abu Dhabi, UAE. With a workforce of 28 employees, the firm specializes in sustainable and eco-friendly water treatment solutions. Their services include sewage treatment, reverse osmosis, and notably, water recycling and greywater treatment systems. The company caters to a variety of clients, including those in remote areas and development projects that lack access to public water and drainage networks. EWT has executed numerous projects across the Middle East, showcasing their expertise in innovative water management technologies. Their commitment to providing tailored solutions for water purification and treatment reflects their significant role in the industry.


11. SDS Limited

  • Website: sdslimited.com
  • Ownership type: Private Equity
  • Headquarters: Biddisham, England, United Kingdom (UK)
  • Employee distribution: United Kingdom (UK) 100%
  • Latest funding: June 2023
  • Founded year: 2002
  • Headcount: 51-200
  • LinkedIn: sdslimited

SDS Limited, based in Biddisham, England, has been operational since 2002, focusing on sustainable drainage systems and water management solutions. The company provides a range of innovative products aimed at water treatment, storage, and reuse, catering to various sectors including construction and environmental management. SDS Limited is particularly noted for its engineering solutions that tackle issues of water scarcity and flooding, ensuring efficient management of water resources. Their portfolio includes advanced systems for grey water recycling, which captures and processes water from showers and baths for reuse in applications like toilet flushing and irrigation. This positions them as a relevant player in the greywater treatment sector, actively contributing to sustainable practices in water management.


12. Middle East Group Holding


Middle East Group Holding, founded in 2008 and based in Sharjah, UAE, operates through its subsidiary Meft International, specializing in water treatment solutions. The company provides comprehensive services in water management and wastewater treatment, catering to municipalities and industries across the Middle East, Asia, and Africa. Their expertise includes advanced technologies such as reverse osmosis, ultrafiltration, and biological treatment systems. Meft International has a notable manufacturing facility in the UAE and India, which supports their operations. They focus on sustainable practices, offering tailored solutions for greywater treatment, which is crucial for water conservation efforts in arid regions. Their projects span various applications, including municipal wastewater treatment and industrial effluent management, showcasing their capability in the water treatment sector.


13. Protex Water

  • Website: protexwater.com.au
  • Ownership type: Family Owned
  • Headquarters: Corio, Victoria, Australia
  • Employee distribution: Australia 88%, India 4%, Brazil 4%, Other 4%
  • Founded year: 1991
  • Headcount: 51-200
  • LinkedIn: aks-industries

Protex Water, based in Corio, Victoria, Australia, is a family-owned company that has been operational since 1991. The firm specializes in sewage and wastewater management solutions, providing a wide array of products that include treatment plants, chemical dosing systems, and filtration technologies. Protex Water serves a variety of industries, such as mining, healthcare, and municipal services, ensuring effective water management that complies with regulatory standards. Their product offerings specifically include systems designed for greywater treatment, showcasing their involvement in this critical area of water management. With a workforce of around 71 employees, Protex Water is well-positioned to deliver tailored solutions to meet the needs of their clients across different sectors.


14. Aquacell Pty Ltd

  • Website: aquacell.com.au
  • Ownership type: Private
  • Headquarters: Milsons Point, New South Wales, Australia
  • Employee distribution: Australia 82%, United Kingdom (UK) 18%
  • Founded year: 1996
  • Headcount: 11-50
  • LinkedIn: aquacell-pty-ltd

Aquacell Pty Ltd, founded in 1996 and based in Milsons Point, New South Wales, Australia, is a private company focused on water treatment solutions. The firm specializes in water recycling systems, addressing the needs of blackwater, greywater, rainwater, and stormwater management. Aquacell caters to a range of clients, including businesses, industries, and government entities, providing tailored solutions that enhance water sustainability and efficiency. Their services include consulting, project management, and operational support, ensuring that clients can effectively implement and maintain their water recycling systems. With a workforce of 11-50 employees, Aquacell has established a presence not only in Australia but also in the United Kingdom, reflecting their international reach. The company has been involved in various significant projects, showcasing their capability in delivering effective water treatment solutions.


15. Rainwater Management Solutions


Rainwater Management Solutions, founded in 1998, specializes in rainwater harvesting and stormwater management systems. Based in Roanoke, Virginia, the company provides a range of products and services tailored for both residential and commercial clients. Their offerings include rainwater collection systems, filtration solutions, and consulting services aimed at sustainable water management. Notably, they have developed the GRAYWORKS product line, which focuses on greywater reuse systems, catering to municipal, industrial, and agricultural needs. This product line integrates biological treatment with a modular design, making it adaptable for various commercial establishments. The company has received seed funding of $500,000 in 2017, which supports its ongoing innovation and development in the water management sector. With a small team of around 21 employees, Rainwater Management Solutions remains committed to providing effective solutions for water conservation and management.


16. INTEWA GmbH

  • Website: intewa.com
  • Ownership type: Private
  • Headquarters: Aachen, North Rhine-Westphalia, Germany
  • Employee distribution: Germany 100%
  • Founded year: 1993
  • Headcount: 11-50
  • LinkedIn: intewa-gmbh

INTEWA GmbH, based in Aachen, North Rhine-Westphalia, Germany, is a private company founded in 1993. It specializes in water management solutions, particularly in the areas of water treatment and recycling systems. The company offers a comprehensive range of products aimed at rainwater utilization and greywater recycling, catering to various clients including businesses, municipalities, and private homeowners. INTEWA emphasizes sustainable practices, helping customers reduce water consumption and manage wastewater effectively. With a focus on innovation, they have developed systems that can significantly decrease potable water usage, making them a relevant player in the greywater treatment industry. Their portfolio includes complete greywater recycling systems that meet high international standards, demonstrating their commitment to quality and efficiency in water management.


17. Ecohidro Agua Y Medio Ambiente


Ecohidro Agua Y Medio Ambiente EBT, S.L., based in Murcia, Spain, is a private company founded in 2006. It specializes in designing, manufacturing, and providing services for water treatment solutions, including purification, reuse, and desalination. The company operates across multiple sectors, such as municipal, agricultural, military, and industrial, with a strong emphasis on sustainability and efficiency. Ecohidro has developed a range of products that include solutions for greywater treatment, showcasing their commitment to addressing water scarcity and quality challenges. With a dedicated team of engineers and a factory equipped for high-quality production, Ecohidro has established itself as a reliable provider of water treatment systems. Their ongoing investment in research and development highlights their focus on innovation and adaptation to meet the evolving needs of the market.


18. Sugam Paryavaran Vikalp Pvt. Ltd. - India


Sugam Paryavaran Vikalp Pvt. Ltd., established in 2009 and based in Mumbai, Maharashtra, is a private company dedicated to water treatment solutions. The firm specializes in wastewater management, offering services that include sewage treatment, effluent treatment, and notably, greywater recycling. Their innovative approach is exemplified by the Soil Biotechnology (SBT) system, which was developed in partnership with the Indian Institute of Technology Bombay. This technology aims to provide effective and sustainable solutions for treating contaminated water, ensuring compliance with environmental standards. Sugam has worked with various clients, including municipalities and industries, to implement projects that address water scarcity and pollution. Their commitment to sustainable practices is evident in their mission to recycle water and minimize the harmful effects of wastewater on the environment. The company has also engaged with government initiatives, contributing to water conservation efforts across India.


19. Green Method Engineering (P) Ltd.


Green Method Engineering (P) Ltd., based in Kochi, Kerala, India, is a private company founded in 2004. It specializes in wastewater management, providing innovative solutions for treating wastewater. The company offers a range of services, including the design and construction of sewage treatment plants (STPs) and effluent treatment plants (ETPs). Their clientele spans various sectors, including industries, hospitals, and hotels, all of which require effective wastewater management to meet environmental standards and promote sustainability. With over 20 years of experience, Green Method Engineering has completed numerous projects, showcasing their expertise in the field. They also provide consultancy services for water systems, further solidifying their role in the industry.


20. Blue World Construction, Inc.

  • Website: bluwrld.com
  • Ownership type: Private
  • Headquarters: Florham Park, New Jersey, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2012
  • Headcount: 11-50
  • LinkedIn: blue-world-construction-inc

Blue World Construction, Inc., founded in 2012 and based in Florham Park, New Jersey, is a construction and environmental services firm. The company specializes in remediation and construction projects, offering a range of services that include water treatment, soil remediation, and heavy civil construction. With a team of skilled operators and technicians, Blue World Construction has built a reputation for effectively managing environmental challenges and delivering quality service. Their experience spans various projects, including the design and installation of water treatment systems, which encompass greywater systems and beneficial reuse. This focus on innovative solutions and compliance with complex regulations underscores their commitment to environmental stewardship. The company operates primarily in the United States and serves a clientele that includes businesses and organizations requiring specialized construction and remediation expertise.


21. AQUARA - Tratamiento de Agua

  • Website: aquara.com.pe
  • Ownership type: Private
  • Headquarters: United States (USA)
  • Employee distribution: Peru 50%, Czech Republic 25%, Spain 25%
  • Founded year: 2009
  • Headcount: 11-50
  • LinkedIn: aquara-

AQUARA - Tratamiento de Agua is a private company founded in 2009, dedicated to providing engineering solutions in water treatment and wastewater management. With a workforce of 11 to 50 employees, the company operates primarily in Peru, with additional presence in the Czech Republic and Spain. AQUARA specializes in designing, supplying, and maintaining treatment plants for both water and wastewater, catering to industrial, commercial, and municipal clients. Their services include advanced technologies for water purification, wastewater treatment, and compliance with environmental regulations. The company has executed numerous projects, addressing the challenges of pollution and sustainability across various sectors, including mining, healthcare, and agriculture. AQUARA is committed to delivering high-quality solutions that align with international standards and local regulations, ensuring the effective management of water resources.


22. Deccan Water Treatment PVT. LTD.


Deccan Water Treatment PVT. LTD., based in Pune, Maharashtra, India, has been operational since 1998. The company specializes in providing a wide range of water treatment solutions, including sewage treatment, effluent treatment, and notably, greywater recycling. With a workforce of 11-50 employees, Deccan Water Treatment focuses on sustainable practices and renewable energy solutions, catering to residential, commercial, and industrial clients. Their product offerings include advanced systems for greywater recycling, which help reduce fresh water consumption significantly. The company is committed to quality service and customer satisfaction, ensuring that their solutions meet regulatory standards and operational efficiency. They also provide annual maintenance contracts to support ongoing client needs, demonstrating their dedication to long-term service and operational excellence.


23. Water Secret Contracting

  • Website: wsco-sa.com
  • Ownership type: Private
  • Headquarters: Jeddah, Makkah, Saudi Arabia
  • Employee distribution: Saudi Arabia 92%, Jordan 8%
  • Founded year: 2007
  • Headcount: 51-200
  • LinkedIn: water-secret-contracting

Water Secret Contracting Co LLC, based in Jeddah, Makkah, Saudi Arabia, specializes in wastewater treatment and water purification services. Founded in 2007, the company has built a reputation for providing a range of solutions that include municipal and industrial wastewater treatment, grey water management, and water disinfection. With a workforce of approximately 26 employees, Water Secret Contracting serves municipalities and industries that require effective wastewater management to comply with environmental regulations. Their expertise extends to designing, constructing, and maintaining wastewater treatment plants, including mobile and package systems tailored for various applications. The company operates primarily in Saudi Arabia and Africa, addressing the growing need for sustainable water solutions in these regions. Their commitment to quality and safety is reflected in their operational policies, ensuring that they meet the needs of their clients while adhering to environmental standards.


24. Hidro-water

  • Website: hidro-water.com
  • Ownership type: Private
  • Headquarters: Aldaia, Valencian Community, Spain
  • Employee distribution: Spain 100%
  • Founded year: 1996
  • Headcount: 51-200
  • LinkedIn: hidro-water

Hidro-water, based in Aldaia, Valencian Community, Spain, is a private company founded in 1996. With a workforce of around 70 employees, the company has established itself in the water treatment sector, offering a range of solutions for residential, industrial, and pool applications. Their product line includes advanced technologies such as reverse osmosis, filtration, and ultrafiltration, addressing various water quality challenges. Notably, they also provide systems for greywater treatment, showcasing their capability in this area. The company emphasizes quality and service, backed by over 25 years of industry experience. Their commitment to sustainability is evident through their alignment with the UN's Sustainable Development Goals, reflecting a responsible approach to water management. Hidro-water has also developed projects in over 50 countries, indicating a significant international presence in the water treatment market.



Greywater Treatment Systems Insights: Key Companies


CompanyHeadquarterSizeFoundedOwnership
Orenco Systems, Inc.Sutherlin, Oregon, United States (USA)201-5001981Corporate
BioMicrobics, Inc. - Better Water. Better World.Lenexa, Kansas, United States (USA)51-2001996Private
BioKubeDenmark11-502003Corporate
Corodex IndustriesAbu Dhabi, Abu Dhabi, United Arab Emirates (UAE)1001-50001974Private
CalcamitePretoria, Gauteng, South Africa11-501967Corporate
AquamatchOrhan Gazi, İstanbul, Turkey201-5001989Private
WatermasterBeirut, Beirut Governorate, Lebanon501-10001980Private
PACT ENGINEERING CoDubai, Dubai, United Arab Emirates (UAE)201-5002000Private
SalherArganda Del Rey, Madrid, Spain51-2001980Private
Emirates Water Technology CO. LLCAbu Dhabi, Abu Dhabi, United Arab Emirates (UAE)11-502002Private
SDS LimitedBiddisham, England, United Kingdom (UK)51-2002002Private Equity
Middle East Group HoldingSharjah, Sharjah, United Arab Emirates (UAE)51-2002008Private
Protex WaterCorio, Victoria, Australia51-2001991Family Owned
Aquacell Pty LtdMilsons Point, New South Wales, Australia11-501996Private
Rainwater Management SolutionsUnited States (USA)1-101998Venture Capital
INTEWA GmbHAachen, North Rhine-Westphalia, Germany11-501993Private
Ecohidro Agua Y Medio AmbienteMurcia, Murcia, Spain11-502006Private
Sugam Paryavaran Vikalp Pvt. Ltd. - IndiaMumbai, Maharashtra, India11-502009Private
Green Method Engineering (P) Ltd.Kochi, Kerala, India201-5002004Private
Blue World Construction, Inc.Florham Park, New Jersey, United States (USA)11-502012Private
AQUARA - Tratamiento de AguaUnited States (USA)11-502009Private
Deccan Water Treatment PVT. LTD.Pune, Maharashtra, India11-501998Private
Water Secret ContractingJeddah, Makkah, Saudi Arabia51-2002007Private
Hidro-waterAldaia, Valencian Community, Spain51-2001996Private


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