EPTB Sèvre nantaise

What EPTB Sèvre nantaise does

EPTB Sèvre Nantaise is a French Établissement Public Territorial du Bassin founded in March 2015 and headquartered in Clisson, charged with coordinating integrated water-resource management across the Sèvre Nantaise river basin spanning four départements (Loire-Atlantique, Maine-et-Loire, Deux-Sèvres, Vendée). Its statutory role covers implementation of the SAGE (Schéma d'Aménagement et de Gestion des Eaux) framework, river and wetland restoration, ecological and water-quality monitoring, and prevention of pollution events such as cyanobacteria blooms.

The organization's core deliverables include a multi-decade observatory on flows and aquatic habitats, the cyanobacteria visual observation network (operational since 2019), the WebSIG Sysma cartographic platform, educational programmes across schools, and a network of interpretive hiking trails. It serves constituent municipalities, the agricultural sector, and the general public within the basin.

The business model is entirely public: revenue is drawn from multi-year framework contracts (notably the Contrat Territorial Eau 2024-2026 with a €15.6 million envelope) co-financed by Agence de l'eau Loire-Bretagne, the regions Pays de la Loire and Nouvelle-Aquitaine, the Vendée department, the EU LIFE programme, and membership contributions from member municipalities. The organization holds no commercial customers and operates as a non-market public establishment under French environmental law.

Name

EPTB Sèvre nantaise

Legal name

Établissement Public Territorial du Bassin de la Sèvre Nantaise

Website

https://sevre-nantaise.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

EPTB Sèvre Nantaise is a French public territorial establishment, headquartered in Clisson, that coordinates integrated water management across the Sèvre Nantaise basin for municipalities, agricultural actors, and the general public across four départements.

Ownership category

akta.pro rank

Product category

Watershed Management

NAICS

Administration of Environmental Quality Programs (9241), Administration of Air and Water Resource and Solid Waste Management Programs (924110)

SIC

Water Supply (4941), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro industry

PRIMARYBPAIAMAE

Water Resources Administration (Watersheds, Rivers, Groundwater)

Business & Public Services/Public Sector & Government Administration/Environmental Protection & Natural Resources Administration

SECONDARYBPAGAGAK

Water Resources & Watershed Protection

Business & Public Services/Nonprofit, NGO & Social Services/Environmental & Conservation Organizations

Keywords

• Water resource management
• River basin governance
• Aquatic ecosystem restoration
• Flood risk prevention
• Water quality monitoring

Headquarters

HQ city

Clisson

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, Marketing or Sales

Revenue model

1. Public Funding and Subsidies: The organization operates primarily through public financing from government agencies and regional councils. The Contrat Territorial Eau 2021-2026 has a total budget of 15.6 million euros for the period 2024-2026.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels9 records

Core offering

EPTB Sèvre nantaise coordinates water resource management and aquatic ecosystem restoration across the Sèvre Nantaise river basin in western France. It implements the SAGE (Schéma d'Aménagement et de Gestion des Eaux) framework and runs multi-year territorial contracts (Contrat Territorial Eau 2021-2026), delivering programs on water quality, flood risk prevention, biodiversity, and pedagogical outreach in partnership with territorial collectivities, agricultural actors, and the general public.

Product overview

The Établissement Public Territorial du Bassin de la Sèvre Nantaise operates a comprehensive water resource management ecosystem comprising the main sevre-nantaise.com portal as the central hub, supported by specialized sub-sites for flood management (inondations.sevre-nantaise.com), tourism (100secrets.sevre-nantaise.com), education (pedagogie.sevre-nantaise.com), and agriculture (agri.sevre-nantaise.com). The organization delivers territorial programs including the Contrat Territorial Eau 2021-2026 (€15.6M budget), SAGE implementation, a pedagogical program for schools, and maintains an observatory system for water quality monitoring. Key tools include the WebSIG Sysma geographic information system and a cyanobacteria visual observation network. The LIFE REVERS'EAU project supports public awareness and river restoration efforts through interpretive walking paths.

Differentiator

Problem solved

Functional benefit

Products and services

• SAGE (Schéma d'Aménagement et de Gestion des Eaux)
• Contrat Territorial Eau 2021-2026
• Observatoire de la Qualité de l'Eau
• Réseau d'Observateurs Visuels de Cyanobactéries
• Programme Pédagogique

Quantifiable outcome

• Wetlands provide estimated savings of 2,000 euros per hectare annually on drinking water treatment costs
• +2 more outcomes

Named customers7 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

Feature3 records

Partnerships

Eight partnerships are on record, tiered core.

• Region Pays de la LoirecoreStrategic or Co-development Partner · 1 January 2022Lead partner of the LIFE REVERS'EAU project (11% of watercourses in good ecological status in Pays de la Loire). The project involves 14 local partners with 32 actions over 7 years aimed at reconquering good ecological status of water bodies. EPTB carries two actions: public awareness 'Des Ronds dans l'Eau' and Trézon renaturation.
• Agence de l'eau Loire-BretagnecoreStrategic or Co-development Partner · 1 January 2021Key financial supporter of the Contrat Territorial EAU 2021-2026 program. Provides major funding for aquatic milieu restoration, water quality improvement, and flood prevention actions across the basin.
• Region Nouvelle-AquitainecoreStrategic or Co-development Partner · 1 January 2021Co-financier of the Contrat Territorial EAU 2021-2026 actions on the basin, supporting water quality improvement and aquatic environment restoration programs.
• Region Pays de la LoirecoreStrategic or Co-development Partner · 1 January 2021Co-financier of the Contrat Territorial EAU 2021-2026 actions on the basin, supporting water quality improvement and aquatic environment restoration programs.
• Department of VendéecoreStrategic or Co-development Partner · 1 January 2021Co-financier of the Contrat Territorial EAU 2021-2026 program, supporting basin-wide water management actions.
• Cholet AgglomérationcoreStrategic or Co-development PartnerPartnership for drinking water management (lakes of Ribou and Verdon) and cyanobacteria monitoring. Ensures sanitary monitoring on lakes and étangs in the Choletais area.
• Vendée EaucoreStrategic or Co-development PartnerWater utility managing drinking water infrastructure including the Bultière dam. Collaborates on water quality and cyanobacteria management for drinking water reservoirs.
• Mauges CommunautécoreStrategic or Co-development PartnerCollaborates with Sèvremoine on sanitary monitoring of the Moine river at Roussay, implementing cyanobacteria monitoring protocols.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• EPTB Charente: French public basin establishment coordinating water and aquatic environment policy on the Charente watershed. Comparable institutional model, multi-departmental scope, and reliance on Agence de l'eau Adour-Garonne co-financing.
• EPTB Vilaine: Another French Établissement Public Territorial de Bassin, coordinating water management across the Vilaine basin in western France. Directly comparable in legal form, governance (Comité Syndical), and SAGE implementation mandate.
• EPTB Seine Grands Lacs: French public basin establishment operating major reservoir and flood-mitigation infrastructure on the Seine upstream system. Comparable in legal form, with a stronger operational reservoir-asset mandate versus EPTB Sèvre Nantaise's regulatory focus.
• EP Loire (Établissement public Loire): One of the largest French EPTBs, managing the Loire river basin with a comparable public-territorial-establishment structure, multi-region scope, and EU co-funded action programs such as Plans Loire.

Broad incumbents

• Agence de l'eau Adour-Garonne: State water agency covering the Adour-Garonne basin, comparable to Agence de l'eau Loire-Bretagne in role and scale. While not a direct territorial peer, it is the institutional counterpart that supports analogous EPTBs and finances similar basin-level programs.
• Agence de l'eau Loire-Bretagne: The larger state water agency that funds and supervises EPTB Sèvre Nantaise. Operates a broader basin-wide remit across multiple regions with significantly larger financial resources (redevances, programme budgets) and is the principal counterpart for any contract or SAGE deliverable.
• Office français de la biodiversité (OFB): National French public agency for biodiversity and water policing, supporting EPTBs through technical expertise and co-financing. Operates at a much larger national scale and shares restoration, monitoring, and ecological continuity mandates with EPTB Sèvre Nantaise.

Emerging players

• Fédération des Conservatoires d'espaces naturels: National federation coordinating regional conservatories across France on wetland and aquatic habitat protection. Comparable mission around watershed-scale ecological restoration, citizen engagement, and partnerships with water agencies and EPTBs.
• Conservatoire d'espaces naturels des Pays de la Loire: Regional NGO-conservatory with overlapping wetland restoration, ecological continuity, and public awareness missions on the same Pays de la Loire territory. A natural regional partner-and-peer for habitat restoration activities delivered or co-funded by EPTB Sèvre Nantaise.

Regional players

• Syndicat mixte du bassin de l'Or: Regional public basin syndicate in southern France coordinating water management for the Or étang and coastal watershed. Comparable as a smaller-scale territorial water-management body but operating in a different hydro-climatic and Mediterranean context.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• GitHubgitlab.sevre-nantaise.com/public
• YouTubeyoutube.com/@eptbsevrenantaise
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/eptb-s%C3%A8vre-nantaise

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 EPTB Sèvre nantaise