The National Science Foundation (NSF) is an independent federal agency established in 1950 and based in Alexandria, Virginia. It is dedicated to supporting research and education in science and engineering across a wide range of disciplines. The NSF provides significant non-dilutive funding, up to $1.5 million, to startups and small businesses through its America's Seed Fund initiative, which is part of the Small Business Innovation Research (SBIR) program mandated by Congress. With an operating budget of approximately $7.8 billion, the NSF is committed to advancing fundamental research and education, thus fostering innovation and technological development in the United States.

Founded in 2006, Techstars is a global platform that supports and invests in early-stage technology companies. Through its mentorship-driven accelerator programs, seed investments, and venture capital fund, Techstars fosters innovation across various sectors worldwide.

The U.S. Department of Agriculture (USDA) leads initiatives in food, agriculture, natural resources, and rural development. It aims to expand markets for agricultural products globally, foster alternative markets domestically, improve rural infrastructure, enhance food safety, promote nutrition education, and manage public lands collaboratively.

EASME is a European Union executive agency that supports small and medium-sized enterprises and promotes innovation in Europe. It manages projects in the areas of small and medium-sized enterprises, as well as the environment, energy, and maritime sectors, funded by COSME, LIFE, and EMFF. EASME organizes the European Sustainable Energy Week and serves industries such as environmental management, energy production, and maritime activities.

MassChallenge is a global startup accelerator supporting early-stage entrepreneurs across various industries. Founded in 2009, it provides mentorship, resources, and networking opportunities through its programs worldwide.

The U.S. Department of Energy is a government agency established in 1977, located in Washington, D.C. Its primary mission is to ensure the security and prosperity of the nation by tackling energy, environmental, and nuclear challenges. The Department focuses on promoting transformative scientific and technological solutions to address these issues, thereby supporting the country's energy needs and environmental sustainability.

Founded in 2020, Burnt Island Ventures is a New York-based venture capital firm focused on investing in early-stage companies within the B2B, energy, information technology, clean technology, and climate technology sectors.

Emerald Technology Ventures is a Switzerland-based venture capital firm founded in 2000 that concentrates on clean technology and industrial technology. It backs early through expansion-stage companies worldwide, with emphasis on energy, water, materials, and related fields such as industrial information technology, mobility and urbanisation, and packaging. The firm supports market-ready technologies with strong growth potential, helping portfolio companies scale to global markets and pursue strategic exits within a few years. While its geographic focus spans Europe, North America, and other regions, Emerald seeks opportunities that advance sustainability and efficiency across sectors such as energy generation and storage, water treatment, waste recycling, and advanced materials.

Xylem is a global water technology provider, offering solutions for transporting, treating, testing, and efficiently using water across various sectors such as public utilities, industries, commerce, and residences. With operations in over 150 countries and a workforce of approximately 16,200 employees, Xylem generates around $8.6 billion in annual revenue.

Founded in 1995, SOSV is a global venture capital firm headquartered in New Jersey. It focuses on seed-to-growth stage investments in deep tech innovations, primarily in bio-tech/life sciences and hardware/robotics sectors, with a commitment to human and planetary health.

Founded in 2009, Elemental Impact is a consulting organization dedicated to promoting sustainability and environmental stewardship within businesses. It focuses on initiatives that encourage waste reduction, recycling, and efficient resource use across industries. The company supports businesses in implementing sustainable practices to enhance operational efficiency and environmental responsibility.

Evoqua Water Technologies GmbH is a leading manufacturer of water and wastewater treatment products and systems, including disinfection and solutions for municipal, industrial, and purified water applications. Headquartered in Günzburg, Germany, the company operates as a subsidiary of Evoqua Water Technologies LLC. With over a century of experience, Evoqua is recognized for its innovation and expertise in the water treatment sector. The company is organized into two main segments: Integrated Solutions and Services, which offers fully integrated systems and tailored service solutions, and Applied Product Technologies, which focuses on developing product platforms for distribution through third-party channels. Evoqua is committed to helping municipalities and industrial clients protect and enhance water resources worldwide.

Established in 2001, Sustainable Development Technology Canada (SDTC) is a Canadian organization that funds and supports innovative cleantech projects. It focuses on moving groundbreaking technologies to market, creating jobs, driving economic growth, and promoting environmental benefits. SDTC operates independently but collaborates with various stakeholders from private industry, academia, and governments.

Founded in 2006, Plug & Play is a global innovation platform that connects startups, investors, and corporations. It operates accelerator programs across various industries, including fintech, health, travel, and supply chain, among others. The company invests in early-stage companies through its seed, angel, and series A funding rounds.

Mazarine Ventures is a technology investment firm based in Chicago, Illinois, focused on generating social and environmental impact through early-stage investments. The firm specifically seeks out young companies that offer innovative solutions to improve efficiencies and address water and wastewater-related risks. Mazarine Ventures is particularly interested in founders who are proactive and dedicated to tackling challenges associated with public health, environmental protection, business continuity, and climate change. The firm invests in various sectors, including communications, networking, diagnostic equipment, biotechnology, water utilities, and software, targeting companies with revenue of around one million dollars. Through its investments, Mazarine Ventures aims to support ventures that contribute positively to society and the environment.

Duke Energy is a leading U.S. energy company providing electric and gas services to approximately 7.9 million customers across six states. Headquartered in Charlotte, North Carolina, the company owns and operates diverse power generation assets, including renewable energy sources, with a focus on sustainability and community vitality.

Bpifrance is a financial institution dedicated to supporting companies throughout their development stages, particularly those preparing for stock market listing and seeking credit equity. The organization provides a range of financial solutions, including financing, innovation assistance, and capital investment. By integrating various entities such as OSEO and CDC Entreprises, Bpifrance aims to deliver tailored financial support that addresses the specific needs of businesses. The institution is committed to fostering innovation and helping companies transition toward sustainable growth, ensuring they are well-equipped to face future challenges.

Core & Main distributes a comprehensive range of water, sewer, fire protection, and storm drain products, serving contractors and municipalities across various public works and private construction industries.

Chalmers Ventures is a Swedish venture capital firm based in Gothenburg that supports technology-driven companies through coaching, financing and business development. The firm invests across seed, early, and growth stages in Sweden, with programs that include incubation, startup camps and accelerator activities as well as a technology transfer program. It focuses on companies connected to the Gothenburg region and Sweden operating in information technology, communications, new materials, green tech, health tech and biotechnology, and seeks innovative ventures with growth potential. The firm typically makes minority investments and uses a staged funding approach, providing capital through various program phases and through balance sheet investments. It partners with ventures that participate in its programs, helping them advance from explore to scalable stages and achieve commercial success.

Gradiant is a provider of advanced water and wastewater treatment solutions, specializing in cleantech projects. The company employs proprietary technologies to serve various industries, including microelectronics, pharmaceuticals, food and beverage, lithium and critical minerals, and renewable energy. Gradiant's innovative approaches aim to minimize water usage and discharge for its clients, enabling them to reclaim valuable resources and convert wastewater into freshwater. Through its focus on sustainability, Gradiant supports mission-critical operations while addressing the growing challenges of water scarcity and environmental impact.

XPV Water Partners, established in 2006, is a Toronto-based impact investment firm focused on the water sector. Comprising experienced water entrepreneurs, operators, and investment professionals, the firm invests in water and utility enterprises across North America, Europe, the Middle East, and Asia, aiming to make a positive difference in the water industry.

UNIIQ is an investment fund based in The Hague, Netherlands, with a focus on the proof-of-concept phase. Established in 2016, it manages a fund of €22 million aimed at supporting entrepreneurs in South Holland in bringing their unique innovations to market. UNIIQ provides essential start-up capital to help bridge the most critical phase of transforming ideas into promising businesses. By collaborating closely with knowledge institutions and incubators, UNIIQ actively aids entrepreneurs in their strategic development. The investments made by UNIIQ are utilized for validating innovations and business concepts, with the ultimate goal of facilitating the transition to further financing. The fund emphasizes a straightforward process with favorable conditions for entrepreneurs, ensuring they can effectively move forward with their projects.

European Investment Bank is the EU's long-term lending institution owned by its member states. It finances public and private sector projects across transportation, energy, telecommunications, health, education, water, housing, and other sectors in the European Union and beyond. The bank provides a range of financing tools including project loans, guarantees, debt and equity investments, and risk-sharing arrangements, as well as microfinance and venture capital funds. It also offers advisory services, infrastructure funding, and support for urban development, PPPs, and sustainable energy projects. Through infrastructure and environmental funds and partnerships with banks and intermediaries, it supports SMEs, innovation, and the transition to a low-carbon economy.

A.O. Smith specializes in manufacturing and marketing residential and commercial gas, electric water heaters, boilers, and water treatment products. It is the leading manufacturer in North America for these markets.

AECOM is a leading global provider of professional services in program and construction management, operating across the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company offers a wide range of services, including planning, consulting, architectural design, engineering, and construction management, catering to both commercial and government clients. AECOM's expertise spans various sectors, such as transportation, water, environmental, energy, and facilities. With a workforce of approximately 51,000 employees, AECOM is committed to delivering innovative solutions that enhance and sustain the built, natural, and social environments. Headquartered in Los Angeles, California, the company was founded in 1980 and has established itself as a prominent player in the global infrastructure market, generating significant revenue while maintaining a strong presence in over 150 countries.

Banque des Territoires is a financial institution that provides banking and financial services primarily to local authorities, businesses, social housing organizations, and legal professionals. The company specializes in offering customized loans and investment advisory services, as well as financing solutions designed to support clients in executing their projects. By focusing on the specific needs of its diverse clientele, Banque des Territoires aims to facilitate development and growth within various territories, contributing to local economic and social initiatives.

Culligan International is a global provider of water treatment solutions for homes, offices, restaurants and industrial facilities. It offers a full range of products and services, including water softeners, filtration systems, drinking water systems, whole-house filtration, water coolers, and bottled water delivery, along with water testing, installation, maintenance and repair services. The company serves residential, commercial and industrial customers worldwide and is known for its comprehensive approach to safe, clean water. Founded in 1936, Culligan has grown into a global leader in water treatment, delivering systems and services designed to improve water quality across diverse settings.

Franklin Electric designs, manufactures, and distributes products that move and manage water. Its offerings include pumps, motors, drives, controls, and packaged systems for residential and industrial applications.

Google for Startups is an initiative supporting global startups. It offers access to Google's products, connections, and best practices through a network of partners in over 135 countries. The program aims to help determined startups succeed.

Established in 2020, the European Innovation Council supports innovative startups and researchers with promising ideas, focusing on early-stage companies with positive environmental, social, or governance impacts. It co-invests alongside private investors.

Founded in 1886, American Water provides essential water and wastewater services to approximately 3.4 million active customers across 16 states in the United States. It serves residential, commercial, industrial, and public authority customers, offering a range of services including water treatment, wastewater management, and related infrastructure maintenance.

GO Capital is an independent investment firm focused on early-stage and growth investments in technology-driven companies, with a Rennes base and regional offices across Brittany, Pays de la Loire, Normandy, Centre-Val de Loire and the South of France. Founded in 2003, the firm targets early-stage and growth opportunities in France, supporting technology leaders in digital and healthcare, as well as other future-oriented sectors, and has a track record in DeepTech and responsible innovation. The firm manages about 400 million euros in commitments and combines sectoral expertise with regional networks to back companies with growth potential.

Founded in 2016, Rainmatter Capital is a venture capital firm headquartered in Bangalore, India. It focuses on investing in innovative Indian startups operating in the fintech sector.

New Jersey American Water is a utilities company that provides water and wastewater treatment services to approximately 2.7 million people in New Jersey. Committed to delivering clean, safe, reliable, and affordable water services, the company prioritizes customer satisfaction. By adhering to local and federal regulations, including standards set by the United States Environmental Protection Agency (USEPA), New Jersey American Water ensures that the water quality meets the highest standards.

Pennsylvania American Water provides high-quality and reliable water and wastewater services.

HG Ventures is the venture capital arm of The Heritage Group, headquartered in Indianapolis, Indiana. It funds and partners with early-stage and growth-stage companies developing advanced materials and systems for transportation, infrastructure, environmental services, and specialty chemicals, including digital solutions relevant to these industries. The firm emphasizes United States opportunities and leverages The Heritage Group's operating companies and research center to provide portfolio companies with industry expertise, commercial networks, and technical capabilities. HG Ventures pursues a value-add approach by supporting companies through strategic collaboration and scaling their technologies, often investing in collaborations that align with the Heritage Group's core businesses.

Founded in 2018, Ember Infrastructure is a private equity firm based in New York. It focuses on investing in energy transition projects and infrastructure sectors across the United States and Canada.

H2O Innovation Inc. is a Canadian company specializing in integrated water treatment solutions utilizing membrane filtration technology. It operates through three primary segments: Water Technologies and Services, Specialty Products, and Operation and Maintenance Services. The Water Technologies and Services segment focuses on providing systems for drinking and industrial process water, as well as water reclamation, desalination, and wastewater treatment. The company also manufactures and supplies a range of membrane filtration systems, spare parts, and specialty reverse osmosis chemicals. Its Specialty Products segment includes a variety of consumables, such as membrane cleaners and coagulants, alongside maple syrup production equipment. The Operation and Maintenance Services segment offers public works services, construction for water infrastructure, and containerized treatment systems. Additionally, H2O Innovation provides technical support and software solutions for monitoring water treatment processes. Founded in 2000 and headquartered in Quebec City, the company has established itself as a leader in the water treatment industry, continuously expanding its market presence.

SUIZ Environnement is a utility company that offers industrial services to its clients. The company’s range of services include water management, recycling, waste recovery, and urban development. Water management consists of collection, distribution, waste water treatment, and regulations. Recycling consists of collections and logistics, sorting and dismantling, recovery and treatment, sanitation, maintenance, decontamination, and regulations. SUIZ Environnement was founded in 2008 and is based in Paris.

Serra Ventures is a venture capital firm based in Champaign, Illinois, founded in 1998, that invests in technology companies across the United States and in select international locations. It focuses on early-stage and growth-stage opportunities in information technology, deep technology, instrumentation, software as a service, devices, B2B, and agricultural technologies, with an emphasis on companies in the Midwest and West Coast regions.

MassVentures is a venture capital firm based in Waltham, Massachusetts, established in 1978 as a quasi-public corporation by the Massachusetts Legislature. The firm focuses on providing seed and early-stage funding to high-growth startups, facilitating their transition from concept to commercialization. MassVentures invests primarily in sectors such as information technology, healthcare, cybersecurity, e-commerce, mobile, manufacturing, and robotics. With a governance structure that includes an independent Board of Directors and management by experienced venture capitalists, MassVentures leverages the state's entrepreneurial spirit and innovation centers to support the Massachusetts innovation economy. The firm also offers accelerator programs to further assist emerging companies in their growth journey.

York Water is a utility company specializing in water purification and distribution to residential, commercial, and industrial customers. It also manages wastewater collection and treatment systems across south-central Pennsylvania.

WaterBridge Resources is a midstream company specializing in developing, acquiring, and operating flowback and produced water infrastructure for oil and gas producers. Its services include gathering, pipeline infrastructure, separation, and disposal solutions. Founded by Stephen Johnson and Andy Stephens, the company primarily operates in the Delaware Basin.

Founded in 1933, Saur SAS is the third largest company in France’s water distribution and wastewater management sector. It supplies drinking water to millions of residents and manages wastewater treatment across the country. In addition to these core services, the company has expanded into municipal waste collection and treatment, and provides ancillary services to local authorities.

Ecolab is a global leader in providing cleaning, sanitation, and water management solutions across various sectors, including food, healthcare, hospitality, and industrial markets. The company develops, manufactures, and sells a wide range of products and services, such as dish and laundry washing systems, pest control, and infection control products. Ecolab is recognized for its comprehensive solutions and data-driven insights that enhance food safety, maintain clean environments, and optimize water and energy usage. With a strong presence in the U.S. market, Ecolab is also expanding its operations internationally, focusing on operational efficiencies and sustainability to meet the diverse needs of its customers.

Nucleus Capital is a Berlin-based venture capital firm founded in 2020 that focuses on supporting purpose-driven entrepreneurs. The firm is dedicated to addressing global challenges related to human and planetary health through entrepreneurial innovation. Nucleus Capital specializes in pre-seed and seed-stage investments, targeting companies in the fields of synthetic and computational biology, food technology, and climate technology. By partnering with founders at the early stages of their ventures, Nucleus Capital aims to foster innovative solutions that contribute to a sustainable future.

Founded in 1999, Enhanced Capital Partners is a New York-based investment firm managing over $400 million. It specializes in equity and debt investments for small to mid-sized companies across various sectors, with a focus on healthcare technology systems and TMT industries.

Founded in 2010, EIT InnoEnergy is a leading European innovation engine focused on Sustainable Energy. It invests in early-stage climate tech and energy companies across Europe and the US, providing equity minority investments and added value services to de-risk projects.

Watts Water Technologies is a U.S.-based manufacturer that designs, makes, and sells products and systems that manage and conserve fluids and energy in buildings for residential and commercial markets worldwide. Its product portfolio includes flow control devices such as backflow preventers, water pressure regulators, and valves; heating, ventilation, air conditioning, and gas equipment including boilers and water heaters; hydronic and electric heating systems for under-floor radiant applications; and custom heat and hot water solutions. The company also offers hydronic pump packages, flexible gas connectors, drainage and water reuse products, and water quality systems such as filtration and scale prevention. It markets smart mixing systems, thermostats with home automation capabilities, and high-efficiency boilers under various brands. Sales reach plumbing, heating, and mechanical distributors and dealers, original equipment manufacturers, specialty product distributors, do-it-yourself and retail channels, and direct wholesale accounts. Watts Water Technologies was founded in 1874 and is headquartered in North Andover, Massachusetts.

Founded in 2013, Third Sphere is a venture capital firm based in Brooklyn, New York. It focuses on investing in early-stage climate action companies, with a track record of over 100 portfolio companies that unlock greenhouse gas reductions and resilience through innovative strategies.