The Bouches-du-Rhône department hosts a range of environmental services companies, from large established groups to mid-sized firms. These companies primarily focus on water management, waste treatment, and industrial services. Key players include Onet SA, a family service group offering cleaning and security; Ortec Group, providing multidisciplinary services for industry and environment; Société du canal de Provence, which designs and operates hydraulic systems for water supply; and Société des Eaux de Marseille, managing water and sanitation services for 1.5 million people.
A notable pattern among these companies is the strong concentration in water-related services, encompassing supply, distribution, sanitation, and hydraulic engineering. Many firms, such as Altereo and PROX-HYDRO, specialize in various aspects of water management, reflecting the regional importance of water resources and infrastructure. Headquarters are predominantly located in Marseille and Aix-en-Provence.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Onet SAgroupeonet.com
A family service group with 74,000 employees in 8 countries, offering a wide range of services including cleaning, security, engineering, and maintenance |
14,750 | |||
| 2 |
Ortec Grouportec-group.com
Provides multidisciplinary services for industry, energy, and environment, including maintenance, new works, environmental services, facilities management, logistics, and engineering consulting. |
4,388 | |||
| 3 |
Métropole Aix-Marseille-Provenceampmetropole.fr
Coordination of economic, social, cultural development, urban planning, housing, environmental protection, and public services across 92 communes. |
2,385 | |||
| 4 |
Onet Technologiesonet.fr
Expertise in nuclear engineering and services for reactor maintenance, dismantling, decommissioning, waste management, and training within the nuclear industry lifecycle. |
2,071 | |||
| 5 |
Société du canal de provencecanaldeprovence.com
The company designs, builds, and operates environmentally-friendly hydraulic systems for water supply in the Provence-Alpes-Côte d’Azur region, also offering engineering services internationally |
546 | |||
| 6 |
Société des Eaux de Marseille💧eauxdemarseille.fr
Manages water and sanitation services for 1.5 million people in Provence, including production, distribution, wastewater collection, treatment, and environmental preservation. |
396 | |||
| 7 | 371 | ||||
| 8 |
Altereoaltereo.fr
An independent French company driving clients from ideas to behaviors, specializing in water engineering, public utility management, city sustainability, and geographic intelligence solutions |
229 | |||
| 9 |
GEOCEANgeocean.com
Marine works contractor specializing in subsea pipeline installation, coastal infrastructure, and difficult submarine projects, with expertise in site analysis and renewable energy. |
218 | |||
| 10 |
DSDdsd-global.fr
French company specializing in demolition, decontamination, rehabilitation, asbestos removal, and industrial dismantling of structures and infrastructure |
148 | |||
| 11 |
Groupe La Varappelavarappe.fr
A leader in social inclusion, providing employment opportunities for marginalized individuals in various sectors like HR, environmental services, construction, and healthcare |
130 | |||
| 12 |
DESAMIANTAGE FRANCE DEMOLITION (DFD)desamiantagefrancedemolition.fr
Specializes in asbestos, lead, and pollution removal, demolition, deconstruction, and dismantling across France for various sectors including industrial, maritime, and nuclear. |
117 | |||
| 13 |
PROX-HYDROproxhydro.com
Providing water distribution services for collective housing since 1953 to private and public clients, ensuring optimal service and efficiency |
102 | |||
| 14 |
Régie des Eaux du Pays d'Aixeauxdupaysdaix.fr
An utilities company in Provence-Alpes-Côte d'Azur, France, focusing on water management and distribution in the Pays d'Aix region |
102 | |||
| 15 |
Carrières et Bétons BRONZO PERASSObronzoperasso.fr
A company with a strong identity in Marseille, specializing in quarrying, concrete production, precast products, and inert recycling services |
94 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 | 93 | ||||
| 17 |
Communauté d'Agglomération Arles Crau Camargue Montagnette - ACCMagglo-accm.fr
Management of shared competencies transferred by member municipalities, focusing on local governance, territorial development, and community services within defined areas. |
92 | |||
| 18 |
CMSE - Carrières & Matériaux Sud-Est
A leading producer and recycler of construction materials in several regions, providing local, environmentally-conscious solutions for construction projects with a dedicated team |
89 | |||
| 19 |
Ortec Industrie Rognac - Ortec Grouportec-group.com
Provides industrial and environmental maintenance services, including mechanics, metallurgy, piping, lifting, industrial cleaning, and production delegation for various sectors. |
89 | |||
| 20 |
ax'eauax-eau.com
Specializes in advanced leak detection services and solutions, leading the French market in identifying and managing water leaks efficiently. |
87 | |||
| 21 |
EOLIA GROUPE - Gestion de la qualité de l'air en secteur à risqueeoliagroupe.com
EOLIA GROUPE provides sanitation services focused on risk management, with branches in three regions, emphasizing customer satisfaction, relationship, and human values |
63 | |||
| 22 |
AtmoSudatmosud.org
AtmoSud is an independent observatory monitoring air quality in the Provence-Alpes-Côte d'Azur region, working with various stakeholders to promote environmental preservation |
60 | |||
| 23 |
LVD ENVIRONNEMENTlvdenvironnement.fr
Environmental services focused on ecological transition, including park maintenance, waste management, selective sorting, water cleaning, and meter installation. |
57 | |||
| 24 |
HTS BIO Laboratorieshtsbio.com
A French company specializing in eco-friendly biotechnology solutions for hygiene, cleaning, water treatment, agriculture, and more, developed through exclusive microbiological processes |
45 | |||
| 25 |
Groupe MPgroupe-mp.fr
Specializing in site and building decontamination solutions, this company offers expertise in transforming spaces to be environmentally-friendly and safe for use With a focus on the construction, real estate, industrial, and public sectors, they provide comprehensive services to support the entire lifecycle of buildings, equipment, and land |
43 | |||
| 26 |
DURANCE GRANULATSdurance-granulats.com
Specializing in natural and recycled aggregates, our company focuses on welcoming and optimizing the reuse of construction site debris |
41 | |||
| 27 |
La Compagnie des Forestierslacompagniedesforestiers.com
Specialized environmental conservation company working with nature to preserve and enhance natural habitats, waterways, coastlines, and degraded spaces for over 30 years |
38 | |||
| 28 | 38 | ||||
| 29 |
ATSI 3Dgroupeatsi.com
Specializing in project management, controls, and consulting for asbestos removal, demolition, and pollution remediation services |
36 | |||
| 30 |
Nomadonomad-o.com
Specializing in designing and building compact water treatment units in sea containers or skid-mounted for various water treatment needs |
35 | |||
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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 11, 2026.
More company lists in the Bouches-du-Rhône department
- The largest companies in the Bouches-du-Rhône department 3,318
- Multinational companies in the Bouches-du-Rhône department 351
- Companies with in-house R&D in the Bouches-du-Rhône department 321
- Retail chains in the Bouches-du-Rhône department 281
- Professional services firms in the Bouches-du-Rhône department 249
- Manufacturers in the Bouches-du-Rhône department 187
- Public sector organisations in the Bouches-du-Rhône department 183
- Distributors and wholesalers in the Bouches-du-Rhône department 156
- IT services companies in the Bouches-du-Rhône department 155
- IT Services and IT Consulting companies in the Bouches-du-Rhône department 154
- SaaS companies in the Bouches-du-Rhône department 146
- Hardware manufacturers in the Bouches-du-Rhône department 142
- Family-owned companies in the Bouches-du-Rhône department 142
- Consulting firms in the Bouches-du-Rhône department 129
- Software Development companies in the Bouches-du-Rhône department 121
- Education providers in the Bouches-du-Rhône department 119
- Business Consulting and Services companies in the Bouches-du-Rhône department 113
- Real Estate companies in the Bouches-du-Rhône department 109
- Healthcare providers in the Bouches-du-Rhône department 107
- Law Practice companies in the Bouches-du-Rhône department 100
- Critical infrastructure operators in the Bouches-du-Rhône department 98
- Accounting firms in the Bouches-du-Rhône department 93
- Accounting companies in the Bouches-du-Rhône department 92
- Construction companies in the Bouches-du-Rhône department 91
The same list elsewhere in France
- Environmental services companies in Île-de-France 336
- Environmental services companies in Auvergne-Rhône-Alpes 173
- Environmental services companies in Provence-Alpes-Côte d'Azur 108
- Environmental services companies in Grand Est 100
- Environmental services companies in Nouvelle-Aquitaine 92
- Environmental services companies in Hauts-de-France 87
- Environmental services companies in Occitanie 78
- Environmental services companies in the Hauts-de-Seine department 70
- Environmental services companies in the Rhône department 64
- Environmental services companies in Pays de la Loire 59
- Environmental services companies in Brittany 48
- Environmental services companies in the Nord department 47
- Environmental services companies in Normandy 45
- Environmental services companies in Bourgogne-Franche-Comté 38
- Environmental services companies in the Yvelines department 35
- Environmental services companies in the Seine-Saint-Denis department 34
- Environmental services companies in the Gironde department 32
- Environmental services companies in the Essonne department 27
- Environmental services companies in the Val-de-Marne department 26
- Environmental services companies in the Isère department 25
- Environmental services companies in Paris 87