Siarce

What Siarce does

Siarce (Syndicat Intercommunal d'Aménagement, de Rivières et du Cycle de l'Eau) is a French public intercommunal syndicate headquartered at 58-60 rue Fernand Laguide in Corbeil-Essonnes, Essonne. Founded in 1958 and governed under French public law, it manages the integrated water cycle — drinking water production and distribution, wastewater collection and treatment (both collective and non-collective), and GEMAPI river and flood management — on behalf of 80 member communes across three departments (Essonne, Seine-et-Marne, Loiret) and two regions (Île-de-France and Centre-Val de Loire). The syndicate is owned collectively by its member municipalities and governed by elected delegates, with Xavier Dugoin serving as Président and Sabrina Touret as Directrice Générale des Services.

The operational backbone comprises hydraulic infrastructure (weirs and gates including Moulin de la Papèterie and Moulin d'Écharcon), boreholes (e.g., Bouray-sur-Juine), wastewater treatment plants (notably the Baulne STEP), and a Service de l'Information Géographique et Études (SIG) that publishes an interactive public map of equipment and strategic sites. Continuous flow measurement (métrologie) is conducted across the rus of its territory, alongside environmental surveys including local wildlife inventories along the Essonne river. Subscriber-facing digital infrastructure includes the E.P.S.E. portal and a Le Malesherbois subscriber portal for billing and account management.

Siarce's revenue is generated through water and sanitation subscriber fees billed to residents and businesses, supplemented by contributions from member communes and EPCI partners (including Grand Paris Sud, Coeur d'Essonne, Melun Val de Seine, Val d'Essonne, Deux Vallées, Pays de Nemours, Entre Juine et Renarde, and CAESE) funded through local taxation and public service budgets. Revenue figures are not publicly disclosed. Beyond core utility services, the syndicate runs environmental education programs (Classes d'eau, Anim'eau, Tut'eau), public meetings, and recreational river initiatives including canoe-kayak itineraries marked in partnership with the FFCK. The organization is RGPD-compliant and is currently remediating its RGAA accessibility non-compliance.

Name

Siarce

Legal name

Siarce

Website

https://siarce.fr

Company type

Public

Founded year

1958

Operating status

Operating

Headcount range

101–250 employees

Short description

Siarce is a French public intercommunal syndicate managing drinking water, wastewater, and river (GEMAPI) services across 80 communes in the Essonne, Seine-et-Marne, and Loiret departments under delegated municipal authority.

Ownership category

akta.pro rank

Product category

Water and Sanitation Public Utilities

NAICS

Water Supply and Irrigation Systems (221310), Sewage Treatment Facilities (22132)

SIC

Water Supply (4941), Sanitary Services (4950)

akta.pro primary industry

Non-Revenue Water (NRW) Reduction & Leak Detection (EUANAAAF)

Keywords

• Public water utility
• Wastewater treatment services
• River management
• GEMAPI competencies
• Drinking water distribution

Headquarters

HQ city

Corbeil-essonnes

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales

Revenue model

1. Water and sanitation subscriber fees: Siarce generates revenue through subscriber fees paid by residents and businesses for drinking water supply and wastewater collection/treatment services. Fees are billed through subscriber accounts managed by the syndicate, including online payment capabilities.
2. Public service contributions and taxes: As an intercommunal public syndicate, Siarce receives contributions from its 80 member communes and EPCI structures, funded by local taxation and public service budgets for GEMAPI (flood prevention and waterway management).

Distribution channels1 record

Marketing channels4 records

Core offering

Siarce is a French public intercommunal syndicate that manages the full integrated water cycle and river environments across 80 communes. It produces and distributes drinking water, collects and treats wastewater (collective and non-collective sanitation), and exercises GEMAPI competencies including flood prevention, waterway maintenance, watershed management, and ecosystem restoration. The organization also conducts hydrological monitoring, maintains an interactive geographic information system (SIG), runs environmental education programs, and provides recreational access to rivers and waterways.

Product overview

Siarce (Syndicat Intercommunal d'Aménagement, de Rivières et du Cycle de l'Eau) is a public intercommunal organization managing water services and river systems across approximately 80 communes in the Essonne department of France. The organization operates as a unified public service entity providing drinking water production and distribution, wastewater collection and treatment (assainissement collectif and non-collectif), and GEMAPI river management competencies including flood protection, ecosystem restoration, and waterway maintenance. The organization also conducts public awareness programs, environmental monitoring, and recreational waterway initiatives. Services include an interactive mapping portal (Carte interactive) for viewing infrastructure and equipment, and the E.P.S.E. subscriber portal for customer management. No commercial software product portfolio exists; all offerings are public administrative services.

Differentiator

Problem solved

Functional benefit

Brands

• SIG: Service de l'Information Géographique et Etudes - Geographic Information and Studies Service
• DICEMA

Products and services

• Gestion de l'Eau Potable (Drinking Water Management) Production, transport, and distribution of drinking water across member communes, including management of boreholes (e.g., Bouray-sur-Juine drilling) and distribution network infrastructure.
• Gestion de l'Assainissement (Wastewater Management) Wastewater management services covering collective sanitation networks (assainissement collectif) and non-collective/individual sanitation systems (assainissement non collectif), including the Baulne treatment plant (STEP) and diving inspection services for infrastructure maintenance.
• Compétences GEMAPI (River and Aquatic Environment Management) River and aquatic environment management competencies including watershed management (aménagement d'un bassin versant), watercourse and water body maintenance, flood protection and prevention, and ecosystem and biodiversity restoration across the territory.
• Métrologie (Hydrological Monitoring) Flow measurement (relevés de débit) and water level/quality monitoring services tracking hydrological conditions across rivers and water systems on Siarce's territory.
• Portail E.P.S.E. (Subscriber Portal) Online customer portal enabling subscribers to access their accounts, manage water service information, make payments, and handle connection or compliance requests.
• Carte Interactive (Interactive Map) Interactive web-based mapping tool allowing users to discover and view equipment, infrastructure, and strategic locations managed by Siarce across the territory.
• Classes d'Eau / Anim'eau (Environmental Education Programs) Environmental education programs for school children and the general public covering water ecosystems, biodiversity, and water cycle awareness (Classes d'eau, Anim'eau, Tut'eau).
• Promenades au Bord de l'Eau (Riverside Walking Routes) Guided walking routes along the Essonne river and tributaries with itineraries ranging from 30 to 90 minutes and 1.5 to 6 km, designed for family exploration of natural heritage.
• Itinéraires Canoë Kayak (Marked Canoe-Kayak Routes) Marked canoe and kayak routes on the Essonne river, established in partnership with the French Canoe and Kayak Federation (FFCK), providing recreational access to waterways.

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eight partnerships are on record, tiered core and major.

• Communauté de communes du Val d'EssonnecoreStrategic or Co-development PartnerThe Val d'Essonne community of communes is a key EPCI partner whose member communes delegate water cycle competencies to Siarce. Delegates appointed by the CCVE participate in Siarce's governance.
• Communauté d'agglomération Grand Paris Sud Seine Essonne Sénart (GPS)coreStrategic or Co-development PartnerGrand Paris Sud EPCI member communes delegate sanitation and GEMAPI competencies to Siarce through their appointed delegates.
• Communauté d'agglomération Coeur d'Essonne AgglomérationmajorStrategic or Co-development PartnerCoeur d'Essonne Agglomération member communes delegate certain competencies to Siarce, with appointed delegates serving on the syndicate.
• Communauté d'agglomération Melun Val de SeinemajorStrategic or Co-development PartnerMelun Val de Seine EPCI member communes delegate water cycle competencies to Siarce, with appointed delegates serving on the syndicate.
• Communauté de communes des 2 ValléesmajorStrategic or Co-development PartnerThe Deux Vallées intercommunal structure delegates water cycle management to Siarce for its member communes.
• Communauté de communes du Pays de NemoursmajorStrategic or Co-development PartnerPays de Nemours community of communes delegates GEMAPI and water cycle management to Siarce for member communes.
• Communauté de communes Entre Juine et RenardemajorStrategic or Co-development PartnerEntre Juine et Renarde EPCI delegates water cycle competencies to Siarce for its member communes.
• Communauté d'agglomération Etampois Sud-EssonnemajorStrategic or Co-development PartnerCAESE delegates GEMAPI and water cycle management competencies to Siarce for its member communes.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Syndicat Intercommunal d'Études, de Travaux et d'Aménagement de la Presqu'île de Gennevilliers: Intercommunal syndicate managing wastewater and environmental infrastructure for municipalities in the Île-de-France region. Comparable as a similarly structured French intercommunal public syndicate providing water and sanitation services to multiple member communes in the same region.
• Eau du Grand Lyon: Public water utility managing drinking water and sanitation for the Métropole de Lyon. Comparable as a public-sector French water utility integrating drinking water production/distribution and wastewater treatment under a single intercommunal governance structure.
• Syndicat Mixte de l'Orge et de la Seine (SYMORH): Intercommunal syndicate managing rivers, flood prevention, and aquatic environments in the Essonne-adjacent area of Île-de-France. Comparable as a directly neighboring French intercommunal syndicate performing similar GEMAPI and waterway management functions on adjacent territory.
• Eau de Paris: Municipal water utility serving Paris and surrounding communes, managing the full drinking water cycle from production to distribution. Comparable as a public water utility operating under French public law with statutory territorial responsibilities for drinking water supply and customer management.
• SEDIF (Syndicat des Eaux d'Île-de-France): Largest intercommunal water syndicate in France, supplying drinking water to ~150 communes across the western Île-de-France region. Directly comparable as another French intercommunal water utility operating under the same public syndicate legal framework, serving a similar municipal-customer base in the same broader region.

Broad incumbents

• Suez Eau France: One of France's largest private water and waste management operators, providing drinking water, wastewater, and waste services through delegated public service contracts. Comparable as a major operator in the French water cycle market that competes for delegated contracts with public syndicates like Siarce.
• SAUR: French water services operator serving municipalities, industries, and local authorities with drinking water, wastewater, and irrigation solutions. Comparable as a delegated public service operator competing in the same municipal water and sanitation market segments as Siarce.
• Veolia Eau France: Global environmental services giant with a major French water and wastewater utility business operating under délégations de service public contracts. Comparable as a large-scale incumbent in French water services that competes with public syndicates for municipal contracts and partnerships.

Others

• Office Français de la Biodiversité (OFB): French public agency supporting biodiversity protection, water environment management, and ecological policing. Comparable as a public-sector partner and regulator involved in the GEMAPI and ecosystem-restoration competencies Siarce performs.
• Agence de l'Eau Seine-Normandie (AESN): French basin agency responsible for water resource management, funding, and policy oversight in the Seine-Normandie watershed that includes Siarce's territory. Comparable as a key institutional stakeholder in the same water ecosystem, providing funding and setting regulatory standards that govern Siarce's operations.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@lachainevideoducycledeleau6610
• Facebookfacebook.com/siarce
• LinkedInlinkedin.com/company/siarce
• Instagraminstagram.com/siarce91

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Siarce