The sewage treatment plant construction industry in Europe focuses on building facilities that process wastewater to keep ecosystems healthy and hygienic. Companies involved range from engineering firms to specialized contractors, providing services like design, project management, and innovative treatment technologies. As cities expand and environmental regulations tighten, the industry is evolving to include smart infrastructure with sustainability in mind. Trends such as resource recovery, digitalization, and green technology are shaping its future. These advancements not only improve treatment efficiency but also help meet EU standards for water quality, contributing to a cleaner and more sustainable planet.


The investors listed here span multiple categories, including venture capital, private equity, and corporate entities. Headquartered in key cities like Paris, Stockholm, and Brussels, their sizes vary from small teams to large organizations with thousands of employees. Founded between 1949 and 2011, these investors have engaged in multiple transactions—recording a total of 99 deals in 2024 alone. Their diverse strategies reveal a commitment to sectors like infrastructure and environmental sustainability, underscoring their importance in shaping the future of sewage treatment plant construction across Europe.


Top 14 Sewage Treatment Plant Construction Investors in Europe


1. RSK Group

  • Website: rskgroup.com
  • Type: Corporate
  • Headquarters: Helsby, England, United Kingdom (UK)
  • Founded year: 1989
  • Headcount: 10001+
  • Number of deals in 2024: 3
  • LinkedIn: rsk-group

RSK Group is an environmental consultancy and engineering services company based in the UK, founded in 1989. With over 10,000 employees, RSK provides a wide range of services including environmental assessments, engineering solutions, and sustainability consulting across various sectors such as energy, healthcare, and construction. In recent years, RSK has made significant strides in the water sector, highlighted by their acquisition of Black & Veatch's Water Europe and Water Asia businesses, which is expected to enhance their capabilities in water management and sewage treatment. Additionally, their acquisition of WGM Engineering, which offers engineering services including renewables capabilities, further strengthens their position in the water sector. These strategic moves indicate RSK's commitment to expanding its influence in the sewage treatment plant construction industry, making them a notable player in this field.


2. European Innovation Council (EIC)


The European Innovation Council (EIC) is a public entity based in Brussels, Belgium, established to support innovation and entrepreneurship across Europe. Founded in 1958, the EIC offers various funding programs, including the EIC Accelerator and EIC Pathfinder, aimed at helping startups and SMEs develop and scale their technologies. The EIC provides business acceleration services, networking opportunities, and prizes to foster innovation in multiple sectors. Among its notable transactions, the EIC has funded projects like Pipes.one and Variolytics, which focus on innovative solutions in water management. Particularly relevant is the Water Challenge, which raised $2,609,514 in December 2022, indicating the EIC's commitment to supporting advancements in water treatment and management technologies, which are crucial for sewage treatment plant construction.


3. European Investment Bank (EIB)


The European Investment Bank (EIB) is a public entity based in Luxembourg, founded in 1958, that provides a range of financial services including loans, equity investments, guarantees, and advisory services to support sustainable projects across various sectors. EIB's mission is to promote growth and job creation through funding initiatives that align with environmental sustainability. In 2024, EIB was involved in significant transactions such as providing debt financing to The Water Group, which raised approximately $369.8 million, and to Azienda Comprensoriale Acquedottistica, which raised about $30.9 million. These transactions highlight EIB's commitment to supporting water management projects, including those related to sewage treatment, thereby reinforcing its relevance in the sewage treatment plant construction sector.


4. EQT Group

  • Website: eqtgroup.com
  • Type: Private Equity
  • Headquarters: Stockholm, Stockholm, Sweden
  • Founded year: 1994
  • Headcount: 1001-5000
  • Number of deals in 2024: 30
  • LinkedIn: eqt-partners

EQT Group is a prominent investment firm based in Stockholm, Sweden, specializing in private equity, infrastructure, real estate, growth equity, and venture capital. Founded in 1994, EQT serves institutional investors by providing expertise in managing diverse investment portfolios across multiple sectors and geographies. Notably, EQT has made significant investments in the water and waste management sector, including the acquisition of Saur SAS for approximately $1.7 billion in December 2018. Saur SAS is a key player in the water and wastewater services industry, which aligns closely with sewage treatment plant construction. Additionally, EQT's acquisition of Covanta, a waste-to-energy firm, further demonstrates their commitment to environmental and infrastructure investments. These transactions highlight EQT's strategic focus on sectors that are relevant to sewage treatment and environmental sustainability.


5. Bgf

  • Website: bgf.co.uk
  • Type: Venture Capital
  • Headquarters: London, England, United Kingdom (UK)
  • Founded year: 2011
  • Headcount: 51-200
  • Number of deals in 2024: 53
  • LinkedIn: bgfinvestments

BGF Investment Management Limited is a venture capital firm based in London, UK, founded in 2011. The firm focuses on providing growth funding and value creation support to small and mid-sized businesses in the UK and Ireland. BGF addresses the funding gap in the market through minority investments and extensive support services. Notably, BGF has invested in companies relevant to the sewage treatment plant construction industry, such as Flowline Limited, which specializes in drainage services, and Wales Environmental, a waste management and drainage company. These investments highlight BGF's commitment to supporting businesses that contribute to environmental and infrastructure development, including sewage treatment. Additionally, BGF has invested in RSK Group, an environmental services company, further emphasizing their focus on sectors that intersect with sewage treatment and environmental management.


6. Tikehau Capital


Tikehau Capital is an investment management firm based in Paris, Île-De-France, France, founded in 2004. The firm specializes in alternative asset management, offering a diverse range of services including private debt, private equity, real assets, and capital markets strategies. Tikehau Capital serves a variety of clients, including institutional and private investors, as well as SMEs seeking tailored financing solutions to support growth and sustainability initiatives. Notably, Tikehau has been involved in several transactions relevant to the sewage treatment sector, such as the acquisition of a majority stake in CEBAT S.p.A., an Italian utility infrastructure service provider, as part of their private equity decarbonisation strategy. Additionally, their investment in Evac, a company focused on waste management solutions, further highlights their engagement in sectors that intersect with sewage treatment and environmental sustainability.


7. Almi

  • Website: almi.se
  • Type: Venture Capital
  • Headquarters: Stockholm, Stockholm, Sweden
  • Founded year: 1994
  • Headcount: 201-500
  • Number of deals in 2024: 7
  • LinkedIn: almi-ab

Almi AB is a financial services company based in Stockholm, Sweden, founded in 1994. It specializes in providing loans, risk capital, and business development support to small and medium-sized enterprises (SMEs) in Sweden. Almi aims to enhance the growth and competitiveness of these businesses through tailored financial solutions and guidance. Among their notable transactions, Almi has invested in companies such as C-Green, which focuses on innovative water treatment solutions, and Stockholm Water Technology, which raised funding for market entry and product development in the water sector. Additionally, Almi's investment in Aqua Robur Technologies, which develops technology for efficient measurement of water quality, further underscores their commitment to supporting advancements in water management and treatment technologies.


8. Triton Partners


Triton Partners is a private equity firm based in Luxembourg, founded in 1997, specializing in private equity and credit investments in European mid-market businesses. The firm focuses on sectors such as Business Services, Industrial Tech, and Healthcare, providing operational expertise and capital to help companies unlock their full potential. In 2024, Triton made significant acquisitions, including VolkerWessels, a company involved in construction and infrastructure, and OCU Group, which includes O’Connor Utilities and Instalcom. These acquisitions indicate Triton's strategy to invest in companies that are well-positioned for growth in regulated and non-regulated markets, particularly in the context of energy transition and infrastructure development. Their involvement in these sectors suggests a potential interest in projects related to sewage treatment plants, as they align with Triton's focus on enhancing operational capabilities and driving growth in essential services.


9. Suez

  • Website: suez.com
  • Type: Corporate
  • Headquarters: Paris, Île-De-France, France
  • Founded year: 1997
  • Headcount: 10001+
  • Number of deals in 2024: 5
  • LinkedIn: suez

Suez SA is a prominent utility company based in Paris, France, specializing in water and waste management. Founded in 1997, Suez has over 160 years of experience in addressing critical environmental challenges globally. The company provides essential services to public sector operators and industrial clients, focusing on sustainable practices and innovative solutions for water treatment, waste recycling, and resource management. Notably, Suez has been involved in significant transactions relevant to sewage treatment, including the acquisition of Degrémont SAS, which enhances their capabilities in water treatment solutions. Additionally, their partnership in the acquisition of GE Water & Process Technologies has led to the establishment of a dedicated business unit for water technologies, further solidifying their role in the sewage treatment sector. Suez's commitment to investing in water-related projects, such as the Vinca waste-to-energy facility, showcases their active participation in the broader water management and treatment landscape.


10. Crowdcube

  • Website: crowdcube.com
  • Type: Corporate
  • Headquarters: London, England, United Kingdom (UK)
  • Founded year: 2010
  • Headcount: 51-200
  • Number of deals in 2024: 3
  • LinkedIn: crowdcube-limited

Crowdcube is a London-based crowdfunding platform founded in 2010 that enables businesses to raise capital through equity investments. It connects startups and SMEs with potential investors, facilitating the funding process. The platform promotes diversity and inclusion within its workforce while providing investment management services to its clients. Notably, Crowdcube has been involved in several transactions relevant to the sewage treatment sector, including Mapal Green Energy, which raised $577,696 in May 2023, and Clear Water Revival, which raised $310,399 in March 2014. These transactions highlight Crowdcube's role in supporting innovative companies in the water treatment and sewage management space, further establishing its relevance in this industry.


11. Egis

  • Website: egis-group.com
  • Type: Corporate
  • Headquarters: Saint Quentin, Île-De-France, France
  • Founded year: 1949
  • Headcount: 10001+
  • Number of deals in 2024: 3
  • LinkedIn: egis

Egis is a France-based consulting and engineering firm founded in 1949, with a strong focus on infrastructure and environmental projects. With a workforce of over 10,000 employees, Egis provides a range of services including design, project management, and sustainability consulting to both public and private sector clients. The firm has a global presence and is committed to creating sustainable solutions for urban development and transport infrastructure. Notably, Egis has made strategic acquisitions to enhance its capabilities in relevant sectors. For instance, the acquisition of Engeny Water Management, an Australian consulting firm, aims to bolster their expertise in water management, which is directly applicable to sewage treatment plant construction. Additionally, their acquisition of the Waagner Biro Bridge Services Group and McIntosh Perry further demonstrates their strategy to expand their engineering capabilities, which may include projects related to sewage treatment and environmental management.


12. IK Partners

  • Website: ikpartners.com
  • Type: Private Equity
  • Headquarters: London, England, United Kingdom (UK)
  • Founded year: 1989
  • Headcount: 201-500
  • Number of deals in 2024: 14
  • LinkedIn: ik-investment-partners

IK Partners is a private equity firm based in London, specializing in mid-market investments across Europe. Founded in 1989, the firm focuses on providing capital and strategic support to businesses in various sectors, including Business Services, Healthcare, Consumer, and Industrials. Notably, IK Partners has been involved in significant transactions such as the acquisition of Tecomatic, a provider of water treatment and erosion control systems, which aligns with the sewage treatment industry. Additionally, their past investments in companies like Bonna Sabla, which deals with concrete products, and Evac, which raised funds for water treatment solutions, further demonstrate their engagement in sectors relevant to sewage treatment plant construction. By partnering with management teams, IK Partners aims to enhance growth and create long-term value for their portfolio companies, making them a strategic player in the water treatment and related industries.


13. Renew Holdings plc

  • Website: renewholdings.com
  • Type: Corporate
  • Headquarters: Leeds, England, United Kingdom (UK)
  • Founded year: 1976
  • Headcount: 1001-5000
  • Number of deals in 2024: 3
  • LinkedIn: renew-holdings-plc

Renew Holdings plc is an engineering services company based in Leeds, England, specializing in maintaining and renewing critical infrastructure networks across the UK. Founded in 1976, the company provides a range of services in rail, infrastructure, energy, and environmental sectors, catering to both public and private organizations. Notably, Renew has made strategic acquisitions to bolster its presence in the water and environmental sector, including the acquisition of Enisca for £15.6 million, which enhances their capabilities in the UK water market. This move aligns with their commitment to supporting essential infrastructure, including sewage treatment facilities. Other acquisitions, such as Seymour Civil Engineering Contractors and J Browne Construction, further demonstrate their focus on engineering services that can support sewage treatment plant construction and maintenance.


14. Proparco

  • Website: proparco.fr
  • Type: Corporate
  • Headquarters: Paris, Île-De-France, France
  • Founded year: 1977
  • Headcount: 201-500
  • Number of deals in 2024: 19
  • LinkedIn: proparco

Proparco is a not-for-profit development finance institution based in Paris, Île-De-France, France, founded in 1977. It supports economic growth in developing countries by providing financial tools, investment funds, and technical assistance to businesses and financial institutions. Proparco focuses on sectors such as agriculture, health, and infrastructure, aiming to enhance private sector contributions to sustainable development. In recent transactions, Proparco has been involved in significant funding for companies like Sabesp, which raised $198 million in post-IPO debt, and Águas do Rio, which secured $290 million in debt financing. These transactions highlight Proparco's engagement in the water and sanitation sector, which is closely related to sewage treatment plant construction.



Sewage Treatment Plant Construction Insights: Key Investors in Europe


InvestorHeadquarterSizeFoundedDeals 2024
RSK GroupHelsby, England, United Kingdom (UK)10001+19893
European Innovation Council (EIC)Brussels, Brussels, Belgium201-500195857
European Investment Bank (EIB)Luxembourg1001-5000195899
EQT GroupStockholm, Stockholm, Sweden1001-5000199430
BgfLondon, England, United Kingdom (UK)51-200201153
Tikehau CapitalParis, Île-De-France, France501-100020046
AlmiStockholm, Stockholm, Sweden201-50019947
Triton PartnersLuxembourg201-50019976
SuezParis, Île-De-France, France10001+19975
CrowdcubeLondon, England, United Kingdom (UK)51-20020103
EgisSaint Quentin, Île-De-France, France10001+19493
IK PartnersLondon, England, United Kingdom (UK)201-500198914
Renew Holdings plcLeeds, England, United Kingdom (UK)1001-500019763
ProparcoParis, Île-De-France, France201-500197719


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