DeposSpain® Steel Water Tanks

Innovation and Sustainability

DeposSpain® steel tanks are the ultimate solution for water storage across a wide range of applications, renowned for their exceptional resistance to corrosion.

Furthermore, we have integrated significant innovations, such as an improved roof design and a state-of-the-art waterproofing system. We offer a wide range of capacities and dimensions tailored to meet the specific needs of each customer.

With our steel water tanks, we are committed to providing water storage solutions that are not only efficient and practical, but also environmentally friendly.

Discover their advantages, uses, and handy tips for selection and installation.

Applications of Steel Water Tanks

Their versatility makes them suitable for a wide range of applications, from drinking water storage and agricultural irrigation, to fire prevention, wastewater and cleaning in industries such as olive oil, poultry, viticulture, slaughterhouses, and oil mills. Additionally, these tanks are suitable for use in various industrial processes, demonstrating their ability to meet a variety of needs.

Advantages of DeposSpain® Steel Tanks

Durability and corrosion resistance

They comply with European regulations in C1 to C5 environments, offering an estimated useful life between 20 and 40 years.

Great versatility.

Ideal for storing irrigation water and also suitable for liquid waste with a PVC waterproofing lining.

Easy installation and maintenance.

They stand out for their simple installation, which does not require heavy machinery, and minimal maintenance, aspects that significantly reduce long-term costs.

Environmentally responsible

They are made of corrugated sheet with ProMag coating, a more environmentally friendly option that uses less zinc than conventional galvanizing processes.

Technical Features of DeposSpain® Steel Water Tanks

  • Constructed of corrugated sheet with ProMag coating, renowned for its exceptional corrosion resistance, surpassing standard galvanized steel by up to 10 times and galvanized steel Z-600 (600g/m2) by almost 5 times.

  • High-quality 8.8 bichromated bolts are used.

  • The thickness of the sheets varies depending on the water tank model, ranging from 1 mm to 4 mm.

  • All diameters are available with one, two, three or four wall rings of heightEach wall ring is 1.14 m. high  (for different heights, please contact our sales department).

  • Diameters range from 3.82m to 45m. For other dimensions, please contact our sales department..

  • The joints are sealed with white mastic (preformed butyl sealant) with a diameter of 6 mm, resistant to temperatures ranging from -30º C to 120º C.

Accessories and Customization Options for Water Tanks


We have designed flat roofs with a slight slope for all tank models, ensuring efficient water drainage and minimizing the risk of sediment accumulation. This innovation not only enhances the functionality of our tanks but also extends their lifespan by preventing corrosion and deterioration issues.


Choose our PVC waterproofing lining option for maximum waterproofing and protection of stored water. This membrane acts as a robust barrier against water penetration, ensuring that the stored liquid remains safe and clean at all times

Green Pre-lacquered.

We offer green pre-lacquered water tanks available, often required for water tanks located in protected natural areas, to comply with the regulations on environmental impact that are in force in some areas.

Nonwoven Geotextiles.

For irregular surfaces requiring greater resistance, consider our special bottom materials like Nonwoven Geotextile GEODITEX.

Access Ladder.          

Optionally the tank can be equipped with an internal ladder, including safety rings to conform with regulations.

How to choose your Steel Water Tank

Capacity and Dimensions

Selecting a tank that suits your specific needs is crucial, considering both the required capacity and the dimensions of the available space. Our range encompasses a wide variety of capacities and dimensions, from 13 m3 to 5,000 m3 (equivalent to 5 million liters), thus catering to the needs of each customer.

Foundation and Sealing

A sturdy foundation is essential to ensure the stability and waterproofing of the tank. Options such as concrete or proper preparation with tarpaulin and sand are recommended.

Accessories and Customization

Tanks can be customized with a variety of accessories, allowing complete adaptation to any specific requirement.

Projects and News on Water Tanks

Sheet Metal Water Tank for Farm Supply

Sheet Metal Water Tank for Farm Supply

We have completed the installation of a new sheet metal water tank with a capacity of one million liters to supply a poultry farm in Carmona, Sevilla. The sheet metal tank is equipped with a PVC waterproofing lining and features our flat roof system. The photo shows...

Farm Water Tank in Seville

Farm Water Tank in Seville

Installation of a new 1,000 m³ water tank at a poultry farm. The construction of a water tank with a capacity of one million liters has begun in Arahal, located in Seville province. This tank will play a crucial role in supplying water to a new complex of chicken...

Water Tank with Flat Roof and Waterproofing System

Water Tank with Flat Roof and Waterproofing System

We are pleased to announce the completion of the assembly of a 1,000 m3 water tank in the province of Seville.  This tank is equipped with a PVC liner that ensures excellent waterproofing, thus protecting the stored water and ensuring its safety and purity at all...


Frequently asked questions about steel water tanks

Can steel water tanks store drinking water without contaminating it?

Yes, metal water tanks are ideal for storing drinking water. They are designed with materials such as galvanized steel, which, along with PVC lining waterproofing systems, ensure water quality without the risk of contamination.

What maintenance do tanks require?

Maintenance of metal tanks is relatively straightforward. Periodic inspections are recommended to detect and correct possible corrosion issues, ensure the waterproofing is intact, and verify the good condition of all accessories. Additionally, it is important to keep the internal and external surfaces of the tank clean to prevent sediment and algae buildup.

Is it complicated to install a steel water tank?

No, installing a metal water tank is not complicated. These tanks are designed for efficient, often modular installation, allowing them to be quickly assembled on-site without the need for heavy machinery. However, the ground must be properly prepared, and in some cases, it may be advisable to seek assistance from professionals to ensure proper installation.

How do I choose the right capacity for my metal water tank?

Choosing the right capacity depends on the intended use of the tank and the volume of water you need to store. For domestic use, a small or medium tank may be sufficient, while for agricultural, industrial, or irrigation applications, larger capacities will be required. It is essential to assess your current and future needs to determine the optimal capacity, considering also the available space for tank installation.

Can I install a tank if the surface is irregular?

Yes, it is possible. In situations where the surface is irregular and greater sheet resistance is required, we offer a solution by installing a special material for the bottom, such as Non-Woven Geotextile Geoditex. This material is designed to adapt to various terrains, providing a solid and durable base for the tank.

Get a Quote For Your Project

Subscribe To Our Newsletter

Receive the latest news from our group. / Regístrate a la newsletter para recibir novedades de nuestro grupo.

You have Successfully Subscribed!