# 100 leading environmental services companies in the world

Tamtam tracks 4,213 environmental services companies worldwide. This list ranks the 100 largest by number of employees on LinkedIn, led by WSP, FCC and Jacobs. Their median headcount is 10,383. Half of them were founded in 1947 or later. The most common headquarters are Madrid (9), Aubervilliers (3) and Boston (3).

This list of environmental services companies includes some of the largest global players. Businesses such as FCC, Veolia, WM, and SUEZ specialize in environmental services like waste and water management, and pollution reduction. Other large firms like WSP and Jacobs offer engineering and advisory services across various sectors, including the environment. The companies presented here are predominantly very large groups.

Most of these companies have a global reach, with headquarters distributed across different continents. For instance, WSP is based in Montreal, FCC and ACCIONA in Madrid, Jacobs in Dallas, and Veolia in Aubervilliers. The list also shows a mix of industries beyond pure environmental services, including professional services, construction, utilities, and even defense and space manufacturing.

🌍 World · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [WSP](https://www.tamtam.ai/c/wsp) (wsp.com)<br>Engineering, advisory, and science-based professional services for transport, infrastructure, property, environment, water, power, energy, and mining sectors across fifty countries globally. | Professional Services | 🇨🇦 Montreal | 71,968 |  |
| 2 | [FCC](https://www.tamtam.ai/c/fcc) (fcc.es)<br>Global citizen services company with 100+ years of experience in environmental services, water, and infrastructure sectors, operating in 34 countries | Environmental Services | 🇪🇸 Madrid | 71,000 | 1900 |
| 3 | [Jacobs](https://www.tamtam.ai/c/jacobs) (jacobs.com)<br>Delivering outcomes and solutions for complex challenges in advanced manufacturing, cities, energy, environment, life sciences, transportation, and water, from advisory to lifecycle management. | Business Consulting and Services | 🇺🇸 Dallas | 68,461 | 1947 |
| 4 | [Downer Group](https://www.tamtam.ai/c/downer) (downergroup.com)<br>This company enables communities by providing essential services, infrastructure, and solutions to improve society and support government and defense customers | Construction | 🇦🇺 North Ryde | 53,000 | 1933 |
| 5 | [Veolia](https://www.tamtam.ai/c/veolia-aubervilliers) (veolia.com)<br>Works to build environmental security, cleans up pollution, reduces carbon emissions, and regenerates resources through water, waste, and energy solutions. | Environmental Services | 🇫🇷 Aubervilliers | 50,280 | 1853 |
| 6 | [Amentum](https://www.tamtam.ai/c/amentum) (amentum.com)<br>Amentum is a global leader in engineering, project management, and solutions integration, specializing in modernizing critical missions worldwide with speed and confidence | Defense and Space Manufacturing | 🇺🇸 Chantilly | 50,000 |  |
| 7 | [Ecolab](https://www.tamtam.ai/c/ecolab) (ecolab.com)<br>A global leader providing water, hygiene, and infection prevention solutions for various industries worldwide through comprehensive services and personalized insights | Chemical Manufacturing | 🇺🇸 Saint Paul | 48,879 |  |
| 8 | [Hitachi](https://www.tamtam.ai/c/hitachi) (hitachi.com)<br>A technology and innovation company committed to creating a more sustainable society through advanced social infrastructure systems and improving quality of life | IT Services and IT Consulting | 🇯🇵 Tokyo | 40,513 | 1910 |
| 9 | [ACCIONA](https://www.tamtam.ai/c/acciona) (acciona.com)<br>The company specializes in developing regenerative infrastructure with a focus on sustainability, leading the transition to a low-carbon economy with a positive impact on people and the planet | Utilities | 🇪🇸 Madrid | 33,828 |  |
| 10 | [WM](https://www.tamtam.ai/c/wm) (wm.com)<br>Provides comprehensive waste collection, disposal, recycling, and renewable energy solutions tailored to municipal, commercial, industrial, and residential customers. | Environmental Services | 🇺🇸 Houston | 28,255 |  |
| 11 | [Tetra Tech](https://www.tamtam.ai/c/tetra-tech) (tetratech.com)<br>A global provider of consulting and engineering services, specializing in innovative technical solutions for water, environment, infrastructure, energy, and international development projects | Civil Engineering | 🇺🇸 Pasadena | 27,460 |  |
| 12 | [EnBW Energie Baden-Württemberg AG](https://www.tamtam.ai/c/enbw-energie-baden-wurttemberg-ag) (enbw.com)<br>A leading energy supply company in Germany and Europe with a workforce of 20,000, providing electricity, gas, water, and energy-related products and services to 55 million customers | Utilities | 🇩🇪 Karlsruhe | 27,000 |  |
| 13 | [SUEZ](https://www.tamtam.ai/c/suez) (suez.com)<br>Provides essential water and waste management services to protect natural resources and improve quality of life for global communities and ecosystems. | Environmental Services | 🇫🇷 Paris | 26,423 |  |
| 14 | [International Paper](https://www.tamtam.ai/c/international-paper) (internationalpaper.com)<br>Global company providing sustainable packaging solutions with operations in over 30 countries, employing 65,000 team members worldwide. | Paper and Forest Product Manufacturing | 🇺🇸 Memphis | 25,464 | 1898 |
| 15 | [Göteborgs Stad](https://www.tamtam.ai/c/goteborgs-stad) (goteborg.se)<br>Provides diverse public services, promotes sustainable urban development, offers numerous career opportunities, and ensures equal democratic rights access. | Government Administration | 🇸🇪 | 25,079 |  |
| 16 | [Iron Mountain](https://www.tamtam.ai/c/iron-mountain) (ironmountain.com)<br>Global leader in storage and information management services, partnering with organizations worldwide to protect and unlock the value of their assets and data | IT Services and IT Consulting | 🇺🇸 Boston | 24,357 |  |
| 17 | [Goodwill Industries International](https://www.tamtam.ai/c/goodwill-industries-international) (goodwill.org)<br>nonprofit organization providing education, training, and career services to disadvantaged individuals and people with disabilities for empowerment. | Non-profit Organizations | 🇺🇸 Rockville | 24,004 | 1902 |
| 18 | [Gerdau](https://www.tamtam.ai/c/gerdau) (gerdau.com.br)<br>A leading steel producer in the Americas, specializing in long and special steel, with operations in nine countries and a focus on sustainability | Mining | 🇧🇷 São Paulo | 23,208 | 1901 |
| 19 | [City of Cape Town](https://www.tamtam.ai/c/city-of-cape-town) (capetown.gov.za)<br>Municipality in Cape Town offering a diverse range of services to 4 million residents, with a focus on community, development, and growth | Government Administration | 🇿🇦 Cape Town | 22,864 |  |
| 20 | [Republic Services](https://www.tamtam.ai/c/republic-services) (republicservices.com)<br>An industry leader in environmental services, providing innovative solutions for waste management, recycling, and sustainability to create cleaner and more sustainable communities | Environmental Services | 🇺🇸 Phoenix | 21,081 | 1998 |
| 21 | [Grupo EULEN](https://www.tamtam.ai/c/grupo-eulen) (eulen.com)<br>Provides specialized outsourced services globally, including facility management, cleaning, security, maintenance, environmental, healthcare, and HR solutions for businesses and public administrations. | Facilities Services | 🇪🇸 Madrid | 20,585 | 1962 |
| 22 | [GRUNDFOS](https://www.tamtam.ai/c/grundfos) (grundfos.to)<br>The company specializes in energy-efficient pumps that provide comfort, deliver water, remove wastewater, and support agriculture while striving for environmental protection | Industrial Machinery Manufacturing | 🇺🇸 Bjerringbro | 20,000 | 1945 |
| 23 | [Xylem](https://www.tamtam.ai/c/xylem) (xylem.com)<br>Global provider of advanced technologies and services focused on water and wastewater management, conservation, reuse, and environmental return. | Industrial Machinery Manufacturing | 🇺🇸 Washington | 19,290 |  |
| 24 | [Arca Continental](https://www.tamtam.ai/c/arca-continental) (arcacontal.com)<br>Produces, distributes, sells Coca-Cola beverages, and snacks in Mexico, Ecuador, Peru, Argentina, and the U.S. Company shares trade on the Mexican Stock Exchange. | Food and Beverage Services | 🇲🇽 Monterrey | 16,046 | 1926 |
| 25 | [U.S. Environmental Protection Agency- Pacific Southwest](https://www.tamtam.ai/c/us-environmental-protection-agency-epa) (epa.gov)<br>It protects human health and the environment by ensuring clean air, land, and water while enforcing federal environmental laws effectively. | Government Administration | 🇺🇸 Washington | 16,000 | 1970 |
| 26 | [Egis](https://www.tamtam.ai/c/egis) (egis-group.com)<br>An international consultancy specializing in sustainable infrastructure, construction engineering, and mobility services, working towards achieving carbon neutrality and social development globally | Civil Engineering | 🇫🇷 Saint-Quentin-en-Yvelines | 15,158 |  |
| 27 | [Onet SA](https://www.tamtam.ai/c/onet-sa) (groupeonet.com)<br>A family service group with 74,000 employees in 8 countries, offering a wide range of services including cleaning, security, engineering, and maintenance | Business Consulting and Services | 🇫🇷 Marseille | 14,750 | 1860 |
| 28 | [PreZero España](https://www.tamtam.ai/c/prezero-espana) (prezero.es)<br>The company provides environmentally friendly solutions for waste management and circular economy, serving over 980 municipalities in Spain and Portugal | Environmental Services | 🇪🇸 Madrid | 14,600 | 2021 |
| 29 | [Dalkia](https://www.tamtam.ai/c/dalkia) (dalkia.fr)<br>Invests, develops renewable energy, and assists clients for energy savings, CO2 reduction by maintaining and operating industrial, commercial, and residential facilities. | Environmental Services | 🇫🇷 Saint-André-lez-Lille | 14,557 |  |
| 30 | [ANDRITZ](https://www.tamtam.ai/c/andritz) (andritz.com)<br>A global supplier of plants, equipment, and services for various industries including hydropower, pulp & paper, metalworking, and solid/liquid separation | Machinery Manufacturing | 🇦🇹 Graz | 14,107 |  |
| 31 | [COLAS](https://www.tamtam.ai/c/colas) (allinks.click)<br>Construction and maintenance of transportation infrastructure and urban development, from industrial production to service offerings, including construction work globally. | Construction | 🇫🇷 Paris | 13,492 |  |
| 32 | [Clean Harbors](https://www.tamtam.ai/c/clean-harbors) (cleanharbors.com)<br>Provider of hazardous waste management, emergency spill response, industrial cleaning, recycling, and used oil re-refining services across North America. | Environmental Services | 🇺🇸 Norwell | 13,449 | 1980 |
| 33 | [Megha Engineering and Infrastructures Ltd (MEIL)](https://www.tamtam.ai/c/megha-engineering-and-infrastructures-ltd-meil) (meil.in)<br>Diverse industrial conglomerate specializing in engineering, construction, water management, power, hydrocarbons, manufacturing, transportation, and defense infrastructure projects worldwide. | Construction | 🇮🇳 Balanagar | 13,436 | 1989 |
| 34 | [ALS](https://www.tamtam.ai/c/als) (alsglobal.com)<br>Global leader in scientific testing with state-of-the-art technologies, offering comprehensive solutions in environment, food, mining, personal care, pharmaceutical, healthcare, and equipment reliability sectors | International Trade and Development | 🇦🇺 Bowen Hills | 13,323 |  |
| 35 | [DS Smith](https://www.tamtam.ai/c/ds-smith) (dssmith.com)<br>Innovative packaging solutions, paper products and recycling services using renewable resources to minimize environmental impact while optimizing supply chains for increased profitability. | Manufacturing | 🇬🇧 London | 13,157 |  |
| 36 | [Veolia \| Water Tech](https://www.tamtam.ai/c/veolia-water-tech) (veoliawatertechnologies.com)<br>Provides global water technology expertise, ensuring performance, sustainability, and resource protection for communities and industries through advanced solutions and services. | Environmental Services | 🇫🇷 Aubervilliers | 13,064 |  |
| 37 | [Nalco Water, An Ecolab Company](https://www.tamtam.ai/c/nalco-water-an-ecolab-company) (ecolab.com)<br>A global leader in water and process management solutions, leveraging connected chemistry and digital innovation to optimize sustainability and business outcomes | Chemical Manufacturing | 🇺🇸 Naperville | 12,751 |  |
| 38 | [Orano](https://www.tamtam.ai/c/orano) (orano.group)<br>International operator in nuclear materials, provides high-value products and services across the entire fuel cycle, addressing energy and health challenges through expertise and innovation. | Nuclear Electric Power Generation | 🇫🇷 Châtillon | 12,605 | 2018 |
| 39 | [Sabesp](https://www.tamtam.ai/c/sabesp) (sabesp.com.br)<br>It supplies water and sewage services to millions in São Paulo, investing significantly in sanitation and expanding services through partnerships. | Environmental Services | 🇧🇷 | 12,562 | 1973 |
| 40 | [Rentokil Initial](https://www.tamtam.ai/c/rentokil-initial) (rentokil-initial.com)<br>Global provider of pest control, hygiene, and well-being services protecting people and enhancing lives for commercial and private customers. | Environmental Services | 🇬🇧 Crawley | 12,515 | 1925 |
| 41 | [RSK Group](https://www.tamtam.ai/c/rsk-group) (rskgroup.com)<br>Global provider of environmental consultancy and engineering services, integrating innovation and multidisciplinary collaboration to address complex sustainability challenges. | Environmental Services | 🇬🇧 Helsby | 12,442 |  |
| 42 | [eThekwini Municipality](https://www.tamtam.ai/c/ethekwini-municipality) (durban.gov.za)<br>Metropolitan Municipality in South Africa's KwaZulu-Natal, home to Durban, offering excellent working conditions, competitive salaries, and development opportunities to make Durban a top city in Africa | Government Administration | 🇿🇦 Durban | 12,266 | 2000 |
| 43 | [Grupo Tragsa](https://www.tamtam.ai/c/grupo-tragsa) (tragsa.es)<br>Provides engineering, technical assistance, and execution of projects for public administrations in agriculture, environment, and rural development sectors. | Environmental Services | 🇪🇸 Madrid | 12,239 | 1977 |
| 44 | [Dubai Electricity & Water Authority - DEWA](https://www.tamtam.ai/c/dubai-electricity-and-water-authority-dewa) (dewa.gov.ae)<br>Reliable electricity and water production, transmission, distribution with innovative smart solutions supporting sustainable, efficient, and net-zero future goals. | Utilities | 🇦🇪 Dubai | 12,117 | 1992 |
| 45 | [Rijkswaterstaat](https://www.tamtam.ai/c/rijkswaterstaat) (rijkswaterstaat.nl)<br>Rijkswaterstaat is responsible for managing and developing roads, waterways, and water resources to create a sustainable living environment in the Netherlands | Government Administration | 🇳🇱 The Hague | 12,088 | 1894 |
| 46 | [SNC-Lavalin](https://www.tamtam.ai/c/snc-lavalin) (atkinsrealis.com)<br>Global engineering services and nuclear organization connecting people, data, and technology to transform infrastructure and energy systems worldwide. | Civil Engineering | 🇨🇦 Montreal | 11,913 |  |
| 47 | [Black & Veatch](https://www.tamtam.ai/c/black-and-veatch) (bv.com)<br>An employee-owned global leader in building critical human infrastructure in Energy, Water, Telecommunications, and Government Services since 1915 | Engineering Services | 🇺🇸 Overland Park | 11,691 | 1915 |
| 48 | [City of Seattle](https://www.tamtam.ai/c/city-of-seattle) (seattle.gov)<br>Providing diverse public services across multiple departments to support community well-being, infrastructure, and inclusive city development. | Government Administration | 🇺🇸 Seattle | 10,924 |  |
| 49 | [City of Calgary](https://www.tamtam.ai/c/city-of-calgary) (calgary.ca)<br>A public service organization in Calgary with a focus on making life better for residents through collaborative efforts and innovative practices | Government Administration | 🇨🇦 Calgary | 10,653 | 1894 |
| 50 | [Elecnor Group](https://www.tamtam.ai/c/elecnor-group) (grupoelecnor.com)<br>Global corporation specializing in engineering, construction, sustainable projects, infrastructure investments, renewable energy, asset management, and energy transmission across 50 countries. | Construction | 🇪🇸 Madrid | 10,383 | 1958 |
| 51 | [Environment Agency](https://www.tamtam.ai/c/environment-agency) (gov.uk)<br>Protect environment across England by managing flood risks, supporting climate adaptation, conserving biodiversity, regulating pollution, and issuing environmental permits. | Environmental Services | 🇺🇸 Bristol | 10,381 | 1996 |
| 52 | [Grupo Equatorial](https://www.tamtam.ai/c/grupo-equatorial) (equatorialenergia.com.br)<br>First Brazilian multi-utility, operates in electric power generation, transmission, distribution, renewables, sanitation, telecommunications, services, and private pension. | Utilities | 🇧🇷 Brasília | 10,275 | 2005 |
| 53 | [Votorantim Cimentos](https://www.tamtam.ai/c/votorantim-cimentos) (votorantimcimentos.com.br)<br>A leading international provider of construction materials, with a diverse portfolio including cement, concrete, and aggregates Also active in agricultural inputs and waste management | Construction | 🇧🇷 São Paulo | 9,998 | 1936 |
| 54 | [MANN+HUMMEL](https://www.tamtam.ai/c/mann-hummel) (mann-hummel.com)<br>Global filtration technology company developing solutions for cleaner mobility, air, water, and industry, contributing to a clean earth and resource sustainability | Environmental Services | 🇩🇪 Ludwigsburg | 9,803 | 1941 |
| 55 | [Apave](https://www.tamtam.ai/c/apave) (apave.com)<br>Specializes in technical, human, environmental, and digital risk management, ensuring safety and performance across various economic sectors for over 150 years. | Environmental Services | 🇫🇷 Courbevoie | 9,778 | 1867 |
| 56 | [Sibanye-Stillwater](https://www.tamtam.ai/c/sibanye-stillwater) (sibanyestillwater.com)<br>Multinational mining group producing platinum, palladium, gold, and other metals, expanding into battery metals and recycling operations globally. | Mining | 🇱🇧 Libanon | 9,668 | 2013 |
| 57 | [CMC](https://www.tamtam.ai/c/cmc) (cmc.com)<br>Focus on recruiting, developing, and supporting talented employees in the metals industry with an emphasis on safety and career growth. | Construction | 🇺🇸 Irving | 9,653 |  |
| 58 | [Mota-Engil](https://www.tamtam.ai/c/mota-engil) (mota-engil.com)<br>Multinational group specializing in engineering, construction, environment, transport concessions, energy, and mining across Europe, Africa, and Latin America. | Construction | 🇵🇹 Porto | 9,395 | 1946 |
| 59 | [SAMSUNG E&A](https://www.tamtam.ai/c/samsung-e-and-a) (samsungena.com)<br>The company specializes in engineering, procurement, construction, and project management for various industries worldwide, focusing on innovative solutions and quality services | Construction | 🇰🇷 Gangdong-Gu | 9,171 | 1970 |
| 60 | [Metro](https://www.tamtam.ai/c/metro) (oregonmetro.gov)<br>Metro is a regional organization in Portland dedicated to parks, land, transportation, recycling, arts, and events, with a focus on diversity and inclusivity | Government Administration | 🇺🇸 Portland | 9,159 | 1979 |
| 61 | [Nucor Corporation](https://www.tamtam.ai/c/nucor-corporation) (nucor.com)<br>Manufacture steel products across North America, operate numerous steel mills, and lead in ferrous scrap recycling for sustainable steel production. | Manufacturing | 🇺🇸 Charlotte | 9,036 |  |
| 62 | [City of Austin](https://www.tamtam.ai/c/city-of-austin) (austintexas.gov)<br>Local government managing city employees, providing public services, promoting transparency, innovation, and maintaining high quality of life standards. | Government Administration | 🇺🇸 Austin | 8,954 | 1839 |
| 63 | [SACYR](https://www.tamtam.ai/c/sacyr) (sacyr.com)<br>A global group specializing in infrastructure, services, and industrial projects with a focus on sustainability, profitability, and improving daily lives | Civil Engineering | 🇪🇸 Madrid | 8,854 |  |
| 64 | [CLECE, S.A.](https://www.tamtam.ai/c/clece-s-a) (clece.es)<br>A leading company offering a wide range of services such as social, educational, environmental, and logistic services with a focus on social inclusion | Utilities | 🇪🇸 Madrid | 8,824 | 1992 |
| 65 | [NEOM](https://www.tamtam.ai/c/neom-27056405) (neom.com)<br>It is a visionary project aimed at creating a sustainable living environment, attracting dreamers and innovators to build a better future. | Government Administration | 🇸🇦 Neom | 8,641 |  |
| 66 | [CDM Smith](https://www.tamtam.ai/c/cdm-smith) (cdmsmith.com)<br>This company provides comprehensive solutions in water, environment, transportation, energy, and facilities to worldwide public and private clients | Civil Engineering | 🇺🇸 Boston | 8,617 | 1947 |
| 67 | [Johnson Matthey](https://www.tamtam.ai/c/johnson-matthey) (matthey.com)<br>development of sustainable technologies supporting energy, chemicals, and automotive sectors to decarbonise, reduce emissions, and enhance sustainability | Chemical Manufacturing | 🇬🇧 London | 8,592 | 1817 |
| 68 | [NWC](https://www.tamtam.ai/c/nwc) (nwc.com.sa)<br>Provision of water and wastewater services in Saudi Arabia, operating on commercial principles and adhering to international best practices. | Utilities | 🇸🇦 Riyadh | 8,333 | 2008 |
| 69 | [GFL Environmental Inc.](https://www.tamtam.ai/c/gfl-environmental-inc) (gflenv.com)<br>A leading North American provider of environmental services for solid waste, liquid waste, and soil remediation, focusing on customer service, safety, and compliance | Environmental Services | 🇨🇦 Vaughan | 8,244 |  |
| 70 | [ILUNION](https://www.tamtam.ai/c/ilunion) (ilunion.com)<br>A group of companies focused on creating a more accessible world, reinventing themselves daily to compete and move forward | Business Consulting and Services | 🇪🇸 Madrid | 8,198 | 2014 |
| 71 | [King County, WA](https://www.tamtam.ai/c/king-county-wa) (kingcounty.gov)<br>A leading Washington employer, transforming government operations to provide essential services to over 2 million residents #GoPublic | Government Administration | 🇺🇸 Seattle | 8,009 | 1852 |
| 72 | [Pentair](https://www.tamtam.ai/c/pentair) (pentair.com)<br>This company provides sustainable water solutions for residential, business, and industrial use globally, focusing on improving lives and the environment | Industrial Machinery Manufacturing | 🇬🇧 London | 7,711 | 1966 |
| 73 | [Webuild](https://www.tamtam.ai/c/webuild) (webuildgroup.com)<br>A global leader in designing and constructing large, complex projects in sustainable mobility, hydropower, water infrastructure, and green buildings worldwide | Construction | 🇮🇹 Rozzano (MI) | 7,514 |  |
| 74 | [Oslo kommune](https://www.tamtam.ai/c/oslo-kommune) (oslo.kommune.no)<br>Oslo municipality, one of Norway's largest employers with 50,000 employees, develops the capital and provides services for residents, contributing to a thriving city | Government Administration | 🇳🇴 Oslo | 7,500 |  |
| 75 | [TRC Companies, Inc.](https://www.tamtam.ai/c/trc-companies-inc) (trccompanies.com)<br>Providing advisory, consulting, construction, engineering, and management services to help clients adapt and achieve sustainable, impactful results. | Environmental Services | 🇺🇸 Windsor | 7,463 | 1969 |
| 76 | [The Nature Conservancy](https://www.tamtam.ai/c/the-nature-conservancy) (nature.org)<br>Protecting and conserving natural resources through science-based, community-driven efforts to ensure a sustainable future for all life. | Non-profit Organizations | 🇺🇸 Arlington | 7,441 | 1951 |
| 77 | [Novelis](https://www.tamtam.ai/c/novelis-atlanta) (novelis.com)<br>A global leader in producing flat-rolled aluminum products and recycling, providing innovative solutions to aerospace, automotive, beverage can, and specialty markets | Manufacturing | 🇺🇸 Atlanta | 7,411 |  |
| 78 | [SERVPRO](https://www.tamtam.ai/c/servpro) (servpro.com)<br>Leading fire and water cleanup and restoration company with over 2,000 franchises providing disaster recovery services nationwide. | Consumer Services | 🇺🇸 Gallatin | 7,178 | 1967 |
| 79 | [Aperam](https://www.tamtam.ai/c/aperam) (aperam.com)<br>A global stainless steel company prioritizing sustainability, producing steel with high recycled content and renewable energy sources, and focusing on long-lasting, affordable solutions | Manufacturing | 🇱🇺 Luxembourg | 7,169 | 2011 |
| 80 | [Auckland Council](https://www.tamtam.ai/c/auckland-council) (aucklandcouncil.govt.nz)<br>Providing governance, policies, and essential public services including waste management, consents, bylaws, events, and parks for Auckland region. | Government Administration | 🇳🇿 Auckland | 7,110 | 2010 |
| 81 | [Fairfax County Government](https://www.tamtam.ai/c/fairfax-county-government) (fairfaxcounty.gov)<br>Fairfax County Government values ethics, transparency, and public service They offer a supportive work environment, competitive benefits, and opportunities for career growth | Government Administration | 🇺🇸 Fairfax | 7,098 | 1742 |
| 82 | [Arvind Limited](https://www.tamtam.ai/c/arvind-limited) (arvind.com)<br>A $1 billion textile company providing integrated solutions in fashion, advanced materials, sustainability, and innovative fabric products worldwide | Retail Apparel and Fashion | 🇮🇳 Ahmedabad | 7,018 | 1931 |
| 83 | [Thames Water](https://www.tamtam.ai/c/thames-water) (thameswater.co.uk)<br>Providing clean water and wastewater services to millions, maintaining infrastructure, ensuring quality, investing in sustainability and community education. | Utilities | 🇬🇧 Reading | 7,000 |  |
| 84 | [Severn Trent](https://www.tamtam.ai/c/severn-trent) (severntrent.com)<br>Provision of clean water and safe wastewater removal for homes, schools, businesses, and hospitals, focusing on community care and quality service. | Utilities | 🇬🇧 Coventry | 7,000 | 1974 |
| 85 | [John Cockerill](https://www.tamtam.ai/c/john-cockerill) (johncockerill.com)<br>Designs, integrates, modernizes, maintains equipment for energy, defense, steelmaking, environment, and industry, focusing on performance, innovation, and global reach. | Industrial Machinery Manufacturing | 🇧🇪 Seraing | 6,989 | 1817 |
| 86 | [Environment and Climate Change Canada](https://www.tamtam.ai/c/environment-and-climate-change-canada) (canada.ca)<br>Inform Canadians on environmental protection, implement clean growth framework, collaborate with partners, conduct research, develop policies, enforce laws. | Government Administration | 🇨🇦 Gatineau | 6,865 | 1971 |
| 87 | [SAUR](https://www.tamtam.ai/c/saur) (saur.com)<br>A global company providing water and essential services, committed to protecting the environment and ensuring quality service for municipalities and cities worldwide | Environmental Services | 🇫🇷 Issy-les-Moulineaux | 6,850 | 1933 |
| 88 | [City of Dallas](https://www.tamtam.ai/c/city-of-dallas) (dallascityhall.com)<br>Local government providing public services, managing city operations, supporting community needs, and promoting values of empathy, ethics, excellence, and equity. | Government Administration | 🇺🇸 Dallas | 6,844 | 1841 |
| 89 | [Stericycle](https://www.tamtam.ai/c/stericycle) (linktr.ee)<br>A leading compliance company providing essential services for proper disposal of medical waste and confidential information, protecting client relationships and the environment | Hospitals and Health Care | 🇺🇸 Bannockburn | 6,777 |  |
| 90 | [Umicore](https://www.tamtam.ai/c/umicore) (umicore.com)<br>Innovating materials technology for sustainable value, reducing emissions, advancing car technology, and driving towards a circular economy for a better life | Chemical Manufacturing | 🇧🇪 Brussels | 6,685 | 1805 |
| 91 | [Aegea Saneamento](https://www.tamtam.ai/c/aegea-saneamento) (aegea.com.br)<br>A leading provider of sanitation services in Brazil, focusing on efficient solutions tailored to each municipality, with a commitment to sustainability and improving people's quality of life | Environmental Services | 🇧🇷 São Paulo | 6,664 |  |
| 92 | [Tragsatec](https://www.tamtam.ai/c/tragsatec) (tragsa.es)<br>Tragsatec offers engineering and technical assistance in various fields including environmental, agricultural, fisheries, infrastructures, and information technologies, focusing on innovation and quality services | Environmental Services | 🇪🇸 | 6,560 | 1989 |
| 93 | [Jan De Nul Group](https://www.tamtam.ai/c/jan-de-nul-group) (jandenul.com)<br>Engineering solutions addressing rising sea levels, energy transition, and soil pollution to improve global quality of life sustainably. | Construction | 🇱🇺 Capellen | 6,391 |  |
| 94 | [Clarios](https://www.tamtam.ai/c/clarios) (clarios.com)<br>Global leader in advanced energy storage solutions, producing 150 million batteries annually for a third of the world's vehicles Expanding capacity to meet future demand | Motor Vehicle Parts Manufacturing | 🇺🇸 Glendale | 6,268 |  |
| 95 | [Veolia \| France](https://www.tamtam.ai/c/veolia-france) (veolia.fr)<br>Provides specialized services for water management, waste treatment, and energy recovery to help cities and industries preserve, access, and renew essential resources. | Environmental Services | 🇫🇷 Aubervilliers | 6,110 | 1853 |
| 96 | [BVG India Limited](https://www.tamtam.ai/c/bvg-india-limited) (bvgindia.com)<br>An integrated services company in India offering mechanized housekeeping, landscaping, maintenance, fabrication, logistics support, and more to organizations nationwide | Facilities Services | 🇮🇳 Pune | 5,994 | 1997 |
| 97 | [WAPDA](https://www.tamtam.ai/c/wapda) (wapda.gov.pk)<br>A construction company based in Île-de-France, France, specializing in various projects related to infrastructure development and construction services | Construction | 🇵🇰 Lahore | 5,852 |  |
| 98 | [RPS](https://www.tamtam.ai/c/rps) (rpsgroup.com)<br>Global consulting and engineering firm part of Tetra Tech, providing services in property, energy, transport, water, resources, defense, and government sectors | Business Consulting and Services | 🇬🇧 Abingdon | 5,846 |  |
| 99 | [Abdul Latif Jameel](https://www.tamtam.ai/c/abdul-latif-jameel) (alj.com)<br>Global network of diversified businesses operating in mobility, energy, environmental services, financial services, health, real estate, logistics, retail, and media. | International Trade and Development | 🇺🇸 | 5,818 | 1945 |
| 100 | [Veolia \| North America](https://www.tamtam.ai/c/veolia-north-america) (veolianorthamerica.com)<br>Provides resource management solutions including water decontamination, toxic waste handling, fossil fuel alternatives, wastewater reuse, and battery recycling for cities and industries. | Environmental Services | 🇺🇸 Boston | 5,812 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in the world

- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,579)
- [Retail chains in the world](https://www.tamtam.ai/l/retail-chains-in-the-world) (35,499)
- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Financial services firms in the world](https://www.tamtam.ai/l/financial-services-firms-in-the-world) (26,817)
- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Education providers in the world](https://www.tamtam.ai/l/education-companies-in-the-world) (23,937)
- [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571)
- [Critical infrastructure operators in the world](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world) (23,312)
- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [Software Development companies in the world](https://www.tamtam.ai/l/software-development-companies-in-the-world) (20,534)
- [Hardware manufacturers in the world](https://www.tamtam.ai/l/hardware-companies-in-the-world) (20,159)
- [Financial Services companies in the world](https://www.tamtam.ai/l/financial-services-companies-in-the-world) (19,958)
- [Companies with a mobile app in the world](https://www.tamtam.ai/l/companies-with-mobile-app-in-the-world) (18,922)
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Healthcare providers in the world](https://www.tamtam.ai/l/healthcare-providers-in-the-world) (16,037)
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Distributors and wholesalers in the world](https://www.tamtam.ai/l/distributors-and-wholesalers-in-the-world) (13,470)
- [Hospitals and Health Care companies in the world](https://www.tamtam.ai/l/hospitals-and-health-care-companies-in-the-world) (12,916)
- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [E-commerce companies in the world](https://www.tamtam.ai/l/ecommerce-companies-in-the-world) (12,013)

## The same list elsewhere

- [Environmental services companies in Europe](https://www.tamtam.ai/l/environmental-services-companies-in-europe) (2,448)
- [Environmental services companies in North America](https://www.tamtam.ai/l/environmental-services-companies-in-north-america) (1,043)
- [Environmental services companies in Latin America](https://www.tamtam.ai/l/environmental-services-companies-in-latin-america) (279)
- [Environmental services companies in Asia](https://www.tamtam.ai/l/environmental-services-companies-in-asia) (193)
- [Environmental services companies in Africa](https://www.tamtam.ai/l/environmental-services-companies-in-africa) (67)
- [Environmental services companies in the Middle East](https://www.tamtam.ai/l/environmental-services-companies-in-the-middle-east) (59)
- [Environmental services companies in Norway](https://www.tamtam.ai/l/environmental-services-companies-norway) (50)
- [Environmental services companies in Colombia](https://www.tamtam.ai/l/environmental-services-companies-colombia) (31)
- [Environmental services companies in Denmark](https://www.tamtam.ai/l/environmental-services-companies-denmark) (28)
- [Environmental services companies in Mexico](https://www.tamtam.ai/l/environmental-services-companies-mexico) (28)
- [Environmental services companies in New Zealand](https://www.tamtam.ai/l/environmental-services-companies-new-zealand) (28)
- [Environmental services companies in Portugal](https://www.tamtam.ai/l/environmental-services-companies-portugal) (28)
- [Environmental services companies in Chile](https://www.tamtam.ai/l/environmental-services-companies-chile) (27)
- [Environmental services companies in China](https://www.tamtam.ai/l/environmental-services-companies-china) (25)

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Source: https://www.tamtam.ai/l/environmental-services-companies-in-the-world