Ile-de-France Water Syndicate

What Ile-de-France Water Syndicate does

The Ile-de-France Water Syndicate (Syndicat des Eaux d'Ile-de-France, SEDIF) is a public intermunicipal cooperation establishment (EPCI) founded in 1923 that provides drinking water production and distribution services to 4 million inhabitants across 133 municipalities (expanding to 135 from January 1, 2026 with the addition of Saclay and Vauhallan) in the Ile-de-France region. Headquartered at 79 bd Saint-Germain, 75006 Paris, the syndicate operates an 8,000 km pipeline network and three major water production plants—Neuilly-sur-Marne (max capacity 600 million liters/day), Choisy-le-Roi, and Méry-sur-Oise—employing advanced treatment technologies including ozone (since 1974), active coal filtration (since 1993), UV disinfection (since 2010), and a planned €1 billion high-performance membrane filtration project (nanofiltration and low-pressure reverse osmosis) targeting PFAS, pesticide metabolites, and pharmaceutical residue removal with service launch by 2032.

The syndicate does not directly operate its network; instead, since January 1, 2025, it has delegated operations to Franciliane, a dedicated subsidiary of the Veolia Group, under a public service concession contract. The customer-facing brand 'L'Eau d'Ile-de-France, source de confiance' handles customer relations and field operations, while SEDIF retains ownership of infrastructure and governance over its 135 member communes. Revenue is generated through water tariffs set via quarterly circulars (subscription fees plus consumption-based pricing) with differentiated tiers for residential and large consumers, and the organization is implementing a €2.9 billion 10-year investment plan (2024-2034) financed in part via an Aqua Prêt from Banque des Territoires.

Commercially, SEDIF pursues a delegated public-service distribution model targeting three customer segments: member municipalities (primary), individual subscribers (~4 million residents), and large industrial/commercial consumers. Its go-to-market relies on enterprise field sales to municipalities (commune-level adhesion), direct distribution to end-users via the digital subscriber portal 'L'Eau d'Ile-de-France', and a channel/reseller relationship with Franciliane as the delegated operator. The product portfolio also includes the SIG Extranet (ArcGIS-based municipal portal), ServO smart metering, the Open Data portal (powered by OpenDataSoft), the Neo fountain program (200 fountains planned), and trenchless pipe rehabilitation via tubage technique (target ≥20% of renewal operations). SEDIF also initiated and hosts the international Club des Grands Services d'Eau du Monde (created 2011, now 14 member utilities).

Name

Ile-de-France Water Syndicate

Legal name

Syndicat des Eaux d'Île-de-France (SEDIF)

Website

https://sedif.com

Company type

Private

Founded year

1923

Operating status

Operating

Headcount range

51–100 employees

Short description

The Ile-de-France Water Syndicate (SEDIF) is a public utility founded in 1923 that produces and distributes drinking water to 4 million inhabitants across 133 municipalities in the Paris region, operating an 8,000 km pipeline network through delegated operator Franciliane (Veolia).

Ownership category

akta.pro rank

Product category

Public Water Utility Services

NAICS

Water Supply and Irrigation Systems (221310), Water, Sewage and Other Systems (2213)

SIC

Water Supply (4941)

akta.pro primary industry

Drinking Water Distribution Network Operations (Mains, Valves, Hydrants, Service Lines) (EUANAAAE)

akta.pro secondary industry

Effluent Polishing & Filtration (MBR/UF/RO/GAC) (EUANADAL)

Keywords

• Public water utility
• Drinking water distribution
• Municipal water supply
• Water treatment services
• Water infrastructure management

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D, Supply Chain, Others

Revenue model

1. Water distribution fees: Public water service fees collected from subscribers and municipalities for water production and distribution services across 133 communes serving 4 million inhabitants.
2. Water tariffs: Quarterly water pricing circulars establish tariffs per commune, including subscription fees and consumption-based pricing for residential and large consumers.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

SEDIF is a French public intermunicipal water syndicate that produces, treats, and distributes drinking water to 4 million residents across 133-135 municipalities in the Ile-de-France region through three water production plants and an 8,000 km pipeline network. The syndicate owns and governs the public water service while delegating operational delivery to Franciliane, a Veolia Group subsidiary, under a 2025 public service concession contract. The customer-facing service is delivered under the brand 'L'Eau d'Ile-de-France, source de confiance' and includes advanced treatment technologies (membrane filtration, ozone, UV, active carbon) and ancillary programs such as the ServO smart metering system, SIG Extranet for municipalities, Open Data portal, and the Eau Solidaire Neo fountain program.

Product overview

The Ile-de-France Water Syndicate (SEDIF) operates a unified public water service covering production, treatment, and distribution of drinking water to 4 million residents across 133 municipalities in Ile-de-France, France. The core offering is branded as 'L'Eau d'Ile-de-France, source de confiance' and delivered through delegated operator Franciliane (Veolia subsidiary) under a 2025 concession. The service portfolio spans three production plants (Neuilly-sur-Marne, Choisy-le-Roi, Méry-sur-Oise) with advanced treatment including a €1 billion high-performance membrane filtration project (nanofiltration and reverse osmosis), a smart metering system (ServO) for automated consumption reading, an SIG Extranet portal for municipalities, an Open Data portal via OpenDataSoft, and a network of Neo drinking water fountains under the Eau Solidaire program. SEDIF also hosts the international Club des Grands Services d'Eau du Monde for peer knowledge-sharing across 14 global water utilities.

Differentiator

Problem solved

Functional benefit

Products and services

• L'Eau d'Ile-de-France, source de confiance The public water service brand operated by SEDIF through its delegate Franciliane (Veolia Group), providing production, treatment, and distribution of drinking water to 4 million residents across 133 municipalities in Ile-de-France. The service includes 24/7 emergency leak response, customer relations management, and water quality monitoring.
• Haute Performance Membrane Filtration Advanced water treatment technology using nanofiltration and low-pressure reverse osmosis membranes to remove micropollutants, pharmaceutical residues, pesticide metabolites, and PFAS ('forever chemicals') from distributed tap water. Targeted at 4 million users across Ile-de-France.
• ServO Smart Metering System Remote reading (telereading) system for water meters enabling automated consumption data collection without manual intervention, improving billing accuracy and leak detection for residential and commercial subscribers.
• SIG Extranet Secure web-based Geographic Information System portal providing member municipalities with visualization and download of water network data, including pipeline schematics at 1/2000 scale, fire equipment locations, and asbestos-in-asphalt data, updated daily with ArcGIS Online OAuth 2.0 authentication.
• Open Data Portal Public open-data portal powered by OpenDataSoft, publishing water infrastructure datasets including fountain locations and network statistics for public reuse.
• Sans-Tranchée Pipe Rehabilitation (Tubage) Trenchless pipe rehabilitation technique inserting a new high-density polyethylene (HDPE) pipe inside existing aging pipelines without excavation, used for network modernization and leak prevention. SEDIF targets at least 20% of pipe renewal operations using trenchless methods.
• Eau Solidaire Neo Fountain Program Program installing new-generation 'Neo' drinking water fountains (200 planned) across the SEDIF territory to guarantee access to drinking water as a fundamental right. Fountains are manufactured in France by Bayard and branded under L'Eau d'Ile-de-France.

Quantifiable outcome

• Maximum capacity: 600 million liters per day at Neuilly-sur-Marne plant
• +4 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

Five partnerships are on record, tiered minor and core.

• Huglo Lepage AvocatsminorImplementation/ SI/ Consulting Partner · 18 June 2026Legal representation for SEDIF in two legal actions to enforce the polluter-pays principle against pesticide manufacturers.
• Franciliane (Veolia Group)coreChannel Partner/ Reseller/ Distributor · 1 January 2025Franciliane is the dedicated company responsible for operating water production and distribution infrastructure under a public service delegation contract effective January 1, 2025. Handles customer relations under the brand 'L'Eau d'Ile-de-France, source de confiance'. Certified ISO 9001, ISO 14001, ISO 22000, ISO 45001, ISO 50001 and NF Service Relation Client.
• Veolia Eau d'Île-de-FrancecoreChannel Partner/ Reseller/ Distributor · 1 January 2011Veolia Eau d'Île-de-France proposed and co-created the Club des grands services d'eau du monde with SEDIF in 2011. The company operates as the delegated service provider for SEDIF through its subsidiary Franciliane.
• Club des grands services d'eau du monde (member municipalities)coreStrategic or Co-development Partner · 1 January 2011International partnership of 14 major water utilities including Milwaukee (USA), Prague (Czech Republic), Rabat (Morocco), De Watergroep (Belgium), Shanghai (China), Sydney (Australia), Washington (USA), Mexico (Mexico), ABSA (Argentina), Tanger (Morocco), Guayaquil (Ecuador), Sofia (Bulgaria), and Tirana (Albania). Created at SEDIF initiative. Promotes knowledge sharing on water management challenges including climate change, population growth, sanitation standards, and crisis management.
• BayardminorOthersFrench manufacturer that designed and produces the Neo fontaine water fountains installed by SEDIF. Located in the Rhône region.

Scale indicators16 records

Recent moves7 records

Expansion highlights6 records

Regional players

• Thames Water: UK's largest water and wastewater utility serving ~15 million people across London and the Thames Valley. Comparable to SEDIF in scale, regulated-monopoly model, and aging-infrastructure renewal challenges, though operating in a different geography.
• New York City Department of Environmental Protection: Municipal authority providing drinking water to ~9 million New Yorkers via an extensive upstate reservoir and aqueduct system. Comparable to SEDIF in scale, public-ownership structure, and large-scale water treatment and distribution mandate.
• Berliner Wasserbetriebe: Berlin's municipally owned water and wastewater utility serving ~3.7 million residents. Comparable to SEDIF as a publicly owned German drinking water supplier operating under similar public-service obligations and EU water-quality standards.
• Severn Trent: UK listed water utility serving ~4.5 million people across the Midlands. Comparable to SEDIF in scale (~4 million customers), regulated-monopoly model, and significant AMP-style capex programs for infrastructure renewal and water-quality upgrades.

Broad incumbents

• Veolia Environnement: Global water and environmental services group; parent of Franciliane, SEDIF's delegated operator. Comparable as the dominant incumbent in French and global water utility operations, with overlapping technology, treatment, and network-management capabilities.
• Suez: Major French and global water and waste management group. Comparable to SEDIF in providing municipal water treatment and distribution services, with strong French public-utility customer overlap and similar membrane/advanced treatment capabilities.

Direct peers

• Eau de Paris: Municipal drinking water utility for the City of Paris. Closely comparable to SEDIF as a French public water producer/distributor serving a dense urban population under a public service model with delegated operations.
• SAUR: French water and wastewater services company serving municipalities under delegated public service contracts. Directly comparable to SEDIF as a delegated operator serving French communes, with overlapping water-treatment and distribution capabilities.
• Lyonnaise des Eaux: French water utility subsidiary of Bouygues operating delegated public water services across many French municipalities. Directly comparable to SEDIF's operating model, providing water production and distribution under public service delegation contracts.

Others

• Aqua Prêt / Banque des Territoires: Caisse des Dépôts subsidiary providing long-term water infrastructure loans to French municipalities and utilities. Included as a key financial enabler comparable to SEDIF's funding context, having financed the €1B Aqua Prêt for SEDIF's membrane project.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/SyndicatEauxIDF
• YouTubeyoutube.com/channel/UC71R8MQcYV14TUpyJYPBY9Q/videos
• Facebookfacebook.com/SyndicatEauxIDF
• LinkedInlinkedin.com/company/sedif/mycompany/verification
• Instagraminstagram.com/SyndicatEauxIDF

Compliance6 records

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 Ile-de-France Water Syndicate