The CITERNEO flexible cistern is a high-performance solution for rainwater recovery and storage, suitable for local authorities, farms, industrial sites and construction sites. It allows you to build up reserves for watering, cleaning, equipment maintenance or process water supply, while reducing dependence on the network. In a context of rising water prices and the need for sustainable management, it represents an economical and ecological alternative.
Fabricated in France from EXOM+ technical fabric, PVC-coated on both sides, the tank guarantees perfect watertightness, excellent mechanical resistance and rapid installation without heavy work.
Rainwater tanks
Rainwater tanks
Our rainwater tanks
Our water tanks
Click on the flexible tank that suits your needs to access the configuration wizard. Other volumes are also available.
Public price
552.38
€ VAT not incl.
Public price
695.90
€ VAT not incl.
Public price
734.35
€ VAT not incl.
A flexible rainwater collector to cope with inflation
With the price of water rising faster than inflation in France, storing this free resource is becoming a budgetary necessity. The CITERNEO flexible water tank captures and stores rainwater with no restrictions on use, even during droughts for authorized applications. This flexible rainwater collector is a profitable investment and part of a sustainable development approach. By installing a flexible rainwater recovery tank, you immediately reduce your bills while preserving groundwater, turning your roof into a free, autonomous water source.
Local authorities: reducing water bills and securing public services
For local authorities, rainwater storage is a major lever for reducing public expenditure. The use of a large-volume flexible tank makes it possible to maintain stadiums, water parks, clean roads or set up a fire reserve without drawing on drinking water reserves. In a context of frequent climatic restrictions, having an autonomous reserve guarantees the continuity of municipal services while preserving the water table. By replacing mains water with a free resource for non-drinking uses, town councils and intercommunal bodies make immediate savings and demonstrate a concrete commitment to sustainable water management.
La Citerne Verte by CITERNEO: excellence at the Élysée Palace
For private customers, our La Citerne Verte by CITERNEO brand embodies French know-how and quality. Winner of the Grande Exposition du Fabriqué en France à l'Élysée in 2024, our storage solution has been recognized at the highest level as a guarantee of industrial excellence. Certified Origine France Garantie, this green tank ensures total traceability and exceptional durability for your garden or home. When you choose this recuperateur eau de pluie souple, you're opting for a prestigious product, designed by the French leader, combining environmental protection and technical performance for sustainable water autonomy.
Flexible installation in crawl spaces, gardens and terraces
One of the major advantages of citernes souples eau de pluie is their incredible layout agility. Unlike bulky rigid tanks, our cuve souple recuperation eau de pluie can be installed very easily in unused spaces such as a vide sanitaire, under a terrace or in a corner of the garden. Its self-supporting architecture means it can be set up in just a few dozen minutes on a level surface, without the need for building permits. This modularity makes the flexible rainwater tank CITERNEO the ideal solution for renovation projects or sites with difficult access, offering maximum storage volume for minimum footprint.
What volume should you choose for your flexible tank?
Determining the ideal volume for your flexible rainwater collector depends on three key factors: your collection area (roof), local rainfall and your actual needs. Whether it's a project for a private individual in a sanitary vacuum or an industrial building, the rule of thumb estimates that a m² of roof can collect around 0.6 to 0.8 liters of water per millimeter of rainfall. To simplify your task, our online calculator takes into account the space available and your uses (garden, home, industrial process) to recommend the optimum capacity. Choosing the right volume means maximizing your autonomy while optimizing the investment cost of your installation.
Réglementation : un cadre clair pour particuliers et professionnels
En France, l’arrêté du 21 août 2008 encadre strictement l’usage de l’eau de pluie. Pour les particuliers, la citerne souple eau de pluie permet d’assurer l’arrosage du jardin, le lavage des véhicules et, sous conditions, l'alimentation des chasses d'eau et du lave-linge. Pour les professionnels, industriels et collectivités, elle constitue une réserve indispensable pour le nettoyage des surfaces, l’entretien des engins, l'arrosage des espaces publics ou les eaux de process non potables. Dans tous les cas, la loi impose une signalétique claire et une séparation totale avec le réseau d'eau potable. L’avantage majeur de la cuve souple réside dans sa simplicité administrative : son installation ne nécessite généralement ni permis de construire ni travaux lourds, garantissant une mise en conformité rapide et durable pour chaque type d'utilisateur.
Comparison: Which solution for your rainwater harvesting needs?
| Specifications | CITERNEO Flexible Tank | Underground Tank (PE/Concrete) | Standard Rain Barrel |
|---|---|---|---|
| Capacity Range | 1 to 2,500 m³ | 1 to 15 m³ (Standard) | 200 to 1,000 L |
| Installation Cost | Minimal (No heavy civils) | Very High (Excavation) | Low |
| Water Preservation | Closed & Algae-free | Good (Darkness) | Poor (Light/Insects) |
| Durability | 20+ years (EXOM+) | High | Low/Medium |
| Global Logistics | Foldable & Lightweight | Bulky & Expensive | Moderate |
Frequently Asked Questions (Global Experts)
Does the stored water remain safe and algae-free?
Yes. Unlike open storage or translucent tanks, CITERNEO flexible tanks are completely opaque and airtight. The absence of light prevents photosynthesis, meaning no algae growth. Our closed system also prevents insects like mosquitoes from breeding, ensuring high-quality water for irrigation, cleaning, or industrial processes.
Is it suitable for extreme weather and UV exposure?
Absolutely. Our proprietary EXOM+ technology is designed for the most demanding environments. Our tanks maintain their mechanical properties in temperatures ranging from -30°C to +70°C (-22°F to +158°F) and feature advanced UV protection to ensure longevity in arid or tropical regions.
How efficient is the shipping for international projects?
One of our greatest advantages is logisitics. A 1,000 m³ tank can be folded and delivered on a single pallet. This significantly reduces shipping costs and carbon footprint compared to rigid tanks, making CITERNEO the most agile solution for remote sites, NGOs, and global industrial groups.