| 1 | South Pole | https://www.linkedin.com/company/south-pole-global/ | Switzerland | 1,179 | 289 | 24.51% | New Entry |
| 2 | ADEME | https://www.linkedin.com/company/ademe/ | France | 1,385 | 332 | 23.97% | ▼ -1 |
| 3 | ALTRAD | https://www.linkedin.com/company/altrad/ | France | 5,167 | 968 | 18.73% | ▲ 72 |
| 4 | Equans France | https://www.linkedin.com/company/equans-france/ | France | 4,433 | 798 | 18.00% | ▼ -2 |
| 5 | Too Good To Go | https://www.linkedin.com/company/too-good-to-go/ | Denmark | 1,295 | 230 | 17.76% | ▼ -2 |
| 6 | Safetykleen | https://www.linkedin.com/company/safetykleen/ | United Kingdom | 1,026 | 167 | 16.28% | New Entry |
| 7 | SLR Consulting | https://www.linkedin.com/company/slr-consulting/ | United Kingdom | 2,189 | 324 | 14.80% | ▼ -1 |
| 8 | RSK Group | https://www.linkedin.com/company/rsk-group/ | United Kingdom | 6,775 | 1,001 | 14.77% | ▲ 0 |
| 9 | Vulcain Engineering Group | https://www.linkedin.com/company/vulcain-ingenierie/ | France | 1,629 | 216 | 13.26% | New Entry |
| 10 | SPIE Citynetworks | https://www.linkedin.com/company/spie-citynetworks/ | France | 2,022 | 268 | 13.25% | ▲ 6 |
| 11 | Apave | https://www.linkedin.com/company/apave/ | France | 6,670 | 862 | 12.92% | ▼ -4 |
| 12 | SOCOTEC | https://www.linkedin.com/company/socotec/ | France | 5,287 | 680 | 12.86% | ▼ -3 |
| 13 | PAPREC | https://www.linkedin.com/company/paprec/ | France | 2,064 | 264 | 12.79% | ▼ -8 |
| 14 | BRGM | https://www.linkedin.com/company/brgm/ | France | 1,178 | 149 | 12.65% | ▼ -10 |
| 15 | ALS Life Sciences | https://www.linkedin.com/company/alslifesciences/ | United States | 1,590 | 201 | 12.64% | ▼ -3 |
| 16 | Harsco Environmental | https://www.linkedin.com/company/harscoenvironmental/ | United Kingdom | 1,175 | 148 | 12.60% | ▼ -1 |
| 17 | EQUANS | https://www.linkedin.com/company/equans/ | France | 16,178 | 1,975 | 12.21% | ▼ -4 |
| 18 | CWS Group | https://www.linkedin.com/company/cws-boco/ | Germany | 2,415 | 283 | 11.72% | ▼ -8 |
| 19 | idverde | https://www.linkedin.com/company/id-verde/ | France | 2,123 | 246 | 11.59% | ▲ 2 |
| 20 | Ginger | https://www.linkedin.com/company/groupeginger/ | France | 1,445 | 163 | 11.28% | ▼ -1 |
| 21 | Renewi Nederland | https://www.linkedin.com/company/renewi-nl/ | Netherlands | 1,001 | 112 | 11.19% | New Entry |
| 22 | SWCA Environmental Consultants | https://www.linkedin.com/company/swca-environmental-consultants/ | United States | 1,284 | 142 | 11.06% | ▲ 5 |
| 23 | Geosyntec Consultants | https://www.linkedin.com/company/geosyntec-consultants/ | United States | 1,859 | 205 | 11.03% | ▲ 3 |
| 24 | TRADEBE | https://www.linkedin.com/company/tradebe/ | Spain | 1,680 | 185 | 11.01% | ▲ 0 |
| 25 | ENGIE Impact | https://www.linkedin.com/company/engie-impact/ | United States | 1,300 | 140 | 10.77% | ▼ -14 |
| 26 | Aqualia | https://www.linkedin.com/company/aqualia/ | Spain | 1,329 | 142 | 10.68% | ▲ 8 |
| 27 | Dekra Industrial | https://www.linkedin.com/company/dekra-industrial/ | France | 2,647 | 279 | 10.54% | ▼ -10 |
| 28 | DHI | https://www.linkedin.com/company/dhi/ | Denmark | 1,529 | 161 | 10.53% | ▲ 3 |
| 29 | Hach | https://www.linkedin.com/company/hach/ | United States | 2,931 | 307 | 10.47% | ▼ -6 |
| 30 | Veolia Water Technologies | https://www.linkedin.com/company/veolia-water-technologies/ | France | 5,847 | 612 | 10.47% | ▼ -10 |
| 31 | Woodard & Curran | https://www.linkedin.com/company/woodard-&-curran/ | United States | 1,013 | 106 | 10.46% | New Entry |
| 32 | Eiffage Énergie Systèmes | https://www.linkedin.com/company/eiffageenergiesystemes/ | France | 10,918 | 1,134 | 10.39% | ▼ -14 |
| 33 | SUEZ UK | https://www.linkedin.com/company/suez-uk/ | United Kingdom | 1,098 | 114 | 10.38% | ▼ -8 |
| 34 | Camfil | https://www.linkedin.com/company/camfil-group/ | Sweden | 1,535 | 158 | 10.29% | ▲ 4 |
| 35 | Ricardo | https://www.linkedin.com/company/ricardo-plc/ | United Kingdom | 2,991 | 303 | 10.13% | ▼ -6 |
| 36 | Schneider Electric Sustainability Business | https://www.linkedin.com/company/schneider-electric-energy-sustainability/ | United States | 2,859 | 287 | 10.04% | ▼ -22 |
| 37 | SPIE Nucléaire | https://www.linkedin.com/company/spie-nucleaire/ | France | 1,051 | 104 | 9.90% | ▼ -2 |
| 38 | Natural Resources Wales | https://www.linkedin.com/company/cyfoeth-naturiol-cymru-natural-resources-wales/ | United Kingdom | 1,027 | 100 | 9.74% | New Entry |
| 39 | SAUR | https://www.linkedin.com/company/saur/ | France | 3,539 | 344 | 9.72% | ▼ -7 |
| 40 | Hazen and Sawyer | https://www.linkedin.com/company/hazen-and-sawyer/ | United States | 1,463 | 140 | 9.57% | ▼ -10 |
| 41 | Partner Engineering & Science | https://www.linkedin.com/company/partner-engineering-&-science-inc./ | United States | 1,095 | 104 | 9.50% | ▼ -19 |
| 42 | Brown and Caldwell | https://www.linkedin.com/company/brown-and-caldwell/ | United States | 2,197 | 207 | 9.42% | ▼ -5 |
| 43 | Rain For Rent | https://www.linkedin.com/company/rain-for-rent/ | United States | 1,209 | 110 | 9.10% | ▲ 0 |
| 44 | Natural England | https://www.linkedin.com/company/natural-england/ | United Kingdom | 2,102 | 190 | 9.04% | ▲ 5 |
| 45 | Met Office | https://www.linkedin.com/company/met-office/ | United Kingdom | 1,880 | 168 | 8.94% | ▲ 8 |
| 46 | TRC Companies | https://www.linkedin.com/company/trc-companies-inc/ | United States | 5,593 | 495 | 8.85% | ▼ -1 |
| 47 | Veolia UK | https://www.linkedin.com/company/veolia-environmental-services-uk/ | United Kingdom | 2,440 | 213 | 8.73% | ▲ 5 |
| 48 | Bureau Veritas Group | https://www.linkedin.com/company/bureau-veritas-group/ | France | 45,998 | 4,000 | 8.70% | ▼ -2 |
| 49 | Bouygues | https://www.linkedin.com/company/bouyguesenergiesetservices/ | France | 6,673 | 577 | 8.65% | ▼ -8 |
| 50 | Carollo Engineers | https://www.linkedin.com/company/carollo-engineers/ | United States | 1,242 | 106 | 8.53% | ▼ -22 |
| 51 | AGBAR | https://www.linkedin.com/company/agbar/ | Spain | 1,121 | 94 | 8.39% | ▼ -1 |
| 52 | SUEZ | https://www.linkedin.com/company/suez/ | France | 25,024 | 2,081 | 8.32% | ▼ -8 |
| 53 | MANN+HUMMEL | https://www.linkedin.com/company/mannhummel/ | Germany | 7,316 | 607 | 8.30% | ▼ -6 |
| 54 | Veolia France | https://www.linkedin.com/company/veolia-france/ | France | 3,724 | 291 | 7.81% | ▼ -12 |
| 55 | Grupo Tragsa | https://www.linkedin.com/company/grupo-tragsa/ | Spain | 8,382 | 646 | 7.71% | ▲ 1 |
| 56 | Dalkia | https://www.linkedin.com/company/dalkia/ | France | 9,404 | 718 | 7.64% | ▼ -8 |
| 57 | EMR | https://www.linkedin.com/company/emr/ | United Kingdom | 1,328 | 99 | 7.45% | ▼ -6 |
| 58 | Badger | https://www.linkedin.com/company/badger-daylighting-corporation/ | Canada | 1,242 | 92 | 7.41% | ▼ -18 |
| 59 | HVC | https://www.linkedin.com/company/hvc/ | Netherlands | 1,030 | 76 | 7.38% | ▼ -23 |
| 60 | Siram Veolia | https://www.linkedin.com/company/siram-veolia/ | Italy | 1,317 | 96 | 7.29% | ▼ -1 |
| 61 | SADE | https://www.linkedin.com/company/sade/ | France | 2,633 | 190 | 7.22% | ▼ -28 |
| 62 | Anticimex | https://www.linkedin.com/company/anticimex/ | Sweden | 1,598 | 113 | 7.07% | ▼ -7 |
| 63 | DERICHEBOURG Environnement | https://www.linkedin.com/company/derichebourg-environnement/ | France | 1,037 | 71 | 6.85% | New Entry |
| 64 | Veolia | https://www.linkedin.com/company/veolia-environnement/ | France | 51,602 | 3,500 | 6.78% | ▼ -4 |
| 65 | MELCC | https://www.linkedin.com/company/melcc/ | Canada | 2,298 | 151 | 6.57% | ▼ -26 |
| 66 | Veolia North America | https://www.linkedin.com/company/veolianorthamerica/ | United States | 4,457 | 292 | 6.55% | ▼ -5 |
| 67 | Environment Agency | https://www.linkedin.com/company/environment-agency/ | United Kingdom | 8,435 | 531 | 6.30% | ▼ -9 |
| 68 | APTIM | https://www.linkedin.com/company/aptim.com/ | United States | 2,417 | 150 | 6.21% | ▼ -11 |
| 69 | PROXISERVE | https://www.linkedin.com/company/proxiserve/ | France | 1,033 | 64 | 6.20% | ▼ -4 |
| 70 | Clean Earth | https://www.linkedin.com/company/clean-earth-inc-/ | United States | 1,164 | 72 | 6.19% | ▲ 3 |
| 71 | Lassila & Tikanoja | https://www.linkedin.com/company/lassila-&-tikanoja/ | Finland | 1,164 | 69 | 5.93% | ▼ -8 |
| 72 | Rentokil Initial | https://www.linkedin.com/company/rentokil-initial/ | United Kingdom | 9,542 | 546 | 5.72% | ▼ -10 |
| 73 | Washington State Department of Ecology | https://www.linkedin.com/company/washingtonstatedepartmentofecology/ | United States | 1,006 | 57 | 5.67% | New Entry |
| 74 | GFL Environmental | https://www.linkedin.com/company/gflenvironmental/ | Canada | 5,187 | 274 | 5.28% | ▼ -8 |
| 75 | FCC Medio Ambiente | https://www.linkedin.com/company/fcc-medio-ambiente/ | Spain | 1,199 | 63 | 5.25% | ▼ -7 |
| 76 | Covanta | https://www.linkedin.com/company/covanta/ | United States | 2,297 | 117 | 5.09% | ▼ -12 |
| 77 | Republic Services | https://www.linkedin.com/company/republic-services-inc/ | United States | 15,058 | 744 | 4.94% | ▼ -8 |
| 78 | Florida Department of Environmental Protection | https://www.linkedin.com/company/florida-department-of-environmental-protection/ | United States | 1,849 | 88 | 4.76% | ▼ -8 |
| 79 | Weston Solutions | https://www.linkedin.com/company/weston-solutions-inc-/ | United States | 1,405 | 65 | 4.63% | ▼ -12 |
| 80 | Urbaser | https://www.linkedin.com/company/urbaser/ | Spain | 3,012 | 127 | 4.22% | ▼ -8 |
| 81 | WRPS | https://www.linkedin.com/company/washington-river-protection-solutions-wrps-/ | United States | 1,155 | 48 | 4.16% | ▼ -2 |
| 82 | Pace | https://www.linkedin.com/company/paceanalytical/ | United States | 1,921 | 76 | 3.96% | ▼ -11 |
| 83 | The Davey Tree Expert Company | https://www.linkedin.com/company/the-davey-tree-expert-company/ | United States | 2,289 | 88 | 3.84% | ▼ -3 |
| 84 | State Water Resources Control Board | https://www.linkedin.com/company/state-water-resources-control-board/ | United States | 1,078 | 39 | 3.62% | ▼ -10 |
| 85 | Eurofins | https://www.linkedin.com/company/eurofins-env-testing-america/ | United States | 1,386 | 50 | 3.61% | ▲ 4 |
| 86 | National Weather Service | https://www.linkedin.com/company/noaa-nws/ | United States | 2,017 | 71 | 3.52% | ▼ -2 |
| 87 | Texas Commission on Environmental Quality | https://www.linkedin.com/company/tceq/ | United States | 2,267 | 77 | 3.40% | ▲ 8 |
| 88 | FCC Servicios Ciudadanos | https://www.linkedin.com/company/fcc_2/ | Spain | 5,699 | 189 | 3.32% | ▼ -3 |
| 89 | Clean Harbors | https://www.linkedin.com/company/clean-harbors/ | United States | 10,413 | 344 | 3.30% | ▼ -12 |
| 90 | Bartlett Tree Experts | https://www.linkedin.com/company/bartlett-tree-experts/ | United States | 1,218 | 39 | 3.20% | ▼ -8 |
| 91 | Harsco | https://www.linkedin.com/company/harsco-corporation/ | United States | 3,453 | 108 | 3.13% | ▲ 3 |
| 92 | US Ecology | https://www.linkedin.com/company/us-ecology-inc-/ | United States | 1,715 | 53 | 3.09% | ▼ -14 |
| 93 | NYS Department of Environmental Conservation | https://www.linkedin.com/company/nys-department-of-environmental-conservation/ | United States | 1,748 | 53 | 3.03% | ▼ -1 |
| 94 | WM | https://www.linkedin.com/company/waste-management/ | United States | 23,323 | 689 | 2.95% | ▼ -8 |
| 95 | Aptive Environmental | https://www.linkedin.com/company/aptive-environmental/ | United States | 1,601 | 47 | 2.94% | ▼ -4 |
| 96 | NYC DEP | https://www.linkedin.com/company/nycdep/ | United States | 2,221 | 65 | 2.93% | ▼ -6 |
| 97 | Waste Connections | https://www.linkedin.com/company/waste-connections-inc-/ | United States | 3,649 | 106 | 2.90% | ▼ -9 |
| 98 | Rumpke Waste & Recycling | https://www.linkedin.com/company/rumpke/ | United States | 1,181 | 33 | 2.79% | ▼ -17 |
| 99 | EnergySolutions | https://www.linkedin.com/company/energysolutions/ | United States | 1,013 | 28 | 2.76% | ▼ -16 |
| 100 | Wisconsin DNR | https://www.linkedin.com/company/wisconsin-department-of-natural-resources/ | United States | 1,664 | 39 | 2.34% | ▼ -13 |
| 101 | Safety-Kleen | https://www.linkedin.com/company/safety-kleen/ | United States | 2,918 | 65 | 2.23% | ▼ -8 |
| 102 | Asplundh Tree Expert | https://www.linkedin.com/company/asplundhtree/ | United States | 3,774 | 64 | 1.70% | ▼ -6 |
| 103 | Providence | https://www.linkedin.com/company/providence/ | United States | 2,240 | 34 | 1.52% | ▼ -6 |
| 104 | DGE Danmark | https://www.linkedin.com/company/dge/ | Denmark | 1,136 | 10 | 0.88% | ▼ -5 |
| 105 | PARO | https://www.linkedin.com/company/paro-bv/ | Netherlands | 1,314 | 8 | 0.61% | ▼ -4 |
| 106 | CCS | https://www.linkedin.com/company/pnecorpdbaccs/ | United States | 4,273 | 25 | 0.59% | ▼ -3 |
| 107 | Advanced Disposal Services | https://www.linkedin.com/company/advanced-disposal/ | United States | 1,071 | 6 | 0.56% | ▼ -5 |
| 108 | DGE | https://www.linkedin.com/company/dge-mark-och-milj-ab/ | Sweden | 1,796 | 9 | 0.50% | ▼ -10 |
