More than just the size, you also need to make sure your water tank suits your space and can deal with long hours of the UAE heat and sun. Before buying one, calculate your daily requirement and check the installation area, tank material, approved use, insulation, access points, and maintenance needs. A large tank will not solve water-storage problems if the supporting base, plumbing or tank type is unsuitable.
Key Takeaways
- Calculate tank capacity from the Requirement’s daily water use, required backup period and expected future demand.
- Choose a vertical, horizontal, underground or insulated tank according to the available space and installation conditions.
- For potable water, confirm that the tank material is suitable for drinking-water contact and accepted by the relevant UAE authority.
- Never place a standard above-ground tank underground unless the manufacturer specifically designed it to withstand soil pressure.
- Check the installation base, fittings, cleaning access, and delivery route before ordering the tank.
Water Storage Tank Options at a Glance
| Tank type | Best suited for | Main advantage | Important consideration |
| Vertical tank | Villas, buildings, and commercial properties with sufficient height | It stores more water within a relatively small footprint. | The site must provide enough vertical clearance and a level supporting base. |
| Horizontal tank | Areas with height restrictions or low roof clearance | Its lower profile fits beneath structures. Also inside limited-height spaces. | It generally occupies more floor space than a vertical tank of similar capacity.” |
| Underground tank | Properties with limited usable surface space | It keeps the storage system below ground and preserves above-ground space. | Installation must follow the manufacturer’s excavation, bedding, anchoring, and backfilling instructions. |
| Insulated tank | Exposed UAE locations where stored-water temperature is a concern | Its insulation slows heat transfer into the stored water. | Buyers should verify the insulation construction and available capacity. |
1. Calculate the Water Storage Capacity You Need
Start with actual water demand. Count the Requirement’s occupants and identify every major use, including bathrooms, kitchens, cleaning, irrigation and staff facilities. For a commercial property, also consider operating hours, visitor numbers and equipment that uses water.
Use this simple formula:
Tank capacity = daily water use × backup days
You can add a little extra for busy periods or future needs. Just avoid going too large, as the water should not sit in the tank for too long.
Buildings that require a dedicated firefighting reserve need a separately calculated capacity. The fire-safety consultant and relevant authority should determine that requirement; a general domestic estimate is not sufficient.
2. Match the Tank Shape to the Available Space
Measure the full installation area instead of looking only at the tank’s stated capacity. Record the available width, length and height. Allow additional room for pipe connections, the lid, inspection, cleaning and future replacement.
A vertical water tank works well when floor space is limited but adequate height is available. Tanks accommodating 50 to 10,000 US gallons suit buyers for homes as well as larger commercial and industrial properties.
Choose a horizontal tank when the installation area has restricted height, such as beneath a structure or inside a low service area. Its lower profile provides better stability and makes it suitable for spaces where a tall tank cannot fit safely.
Do not forget the delivery route. A tank that fits its final location may not pass through the property’s gate, corridor, service opening or rooftop access point.
3. Decide Between Above-Ground and Underground Storage
Above-ground tanks usually make inspection, plumbing work and leak detection easier. They suit rooftops, service yards and ground-level utility areas where the requirement has sufficient space and a properly designed supporting surface.
An underground tank can preserve outdoor space and keep the water-storage system out of view. However, soil places pressure on the tank. Groundwater can also create uplift forces when an underground tank is empty or partly filled.
For this reason, use only a purpose-built underground model. For example, tanks with corrugations and longitudinal ribs are designed to provide strength against earth pressure. Standard above-ground tanks are not designed for burial.
The installer must follow the specified excavation, foundation, backfilling, and anchoring method. Incorrect installation can damage even a tank designed for underground use.
4. Check the Tank Material and Construction
For potable-water storage, look for a tank made from food-grade material that is suitable for contact with drinking water.
For outdoor use, UV-stabilised polyethylene is a practical choice. It does not rust or corrode, even when exposed to the weather.
Cleaning matters too. A smooth inner surface is easier to wash, and a one-piece tank has no joints that may weaken over time. A secure threaded lid also helps keep dust, insects, and dirt out.
5. Consider UAE Heat and Sun Exposure
A rooftop or outdoor tank in the UAE can receive strong sunlight for several hours. UV-stabilised material helps the tank withstand outdoor exposure, but it does not mean the stored water will remain cool.
Consider an insulated tank when water temperature matters and the installation area receives direct sunlight. A multi-layer insulated design slows heat transfer through the tank walls, although it cannot keep stored water permanently cool during extreme summer conditions.
Shade may also reduce direct solar exposure, provided the shade structure allows ventilation, inspection and safe access. Never place heavy objects on the tank or build an enclosure that prevents routine cleaning.
6. Inspect the Base and Structural Support
Water is heavy. A 1,000-litre tank holds approximately one tonne of water before you include the tank’s own weight. Therefore, the installation surface must support the full operating load without settling, bending or cracking.
Use a flat, level and continuous base that supports the tank as its manufacturer specifies. For rooftop installation, ask a qualified structural professional to confirm that the building can carry the filled tank safely. Do not estimate roof capacity by appearance.
7. Review Fittings and Maintenance Access
Confirm the inlet, outlet, overflow, vent and drain positions before installation. Their sizes and locations must work with the property’s plumbing design. Poorly planned connections can restrict flow, create difficult pipe runs or make cleaning unnecessarily complicated.
You also need enough space to check and clean the tank. Make sure a technician can easily reach the lid. You should also be able to drain the tank without flooding the area around it.
Keep the tank covered at all times. Every so often, check the tank, pipes, fittings and supports for leaks, cracks or other damage.
Choose a Tank for the Requirement , Not Just the Capacity
Do not pick a tank based on capacity alone. Think about where it will go, how much space you have, and what type of tank will work best there.
An outdoor tank may sit in direct sun for hours, so its material matters. The base must also be strong enough to carry the full tank. You will need enough room for the pipes and for future cleaning or maintenance. Local rules may also affect where and how the tank can be installed.
Polycon offers vertical, horizontal, underground and insulated polyethylene water tanks for different residential, commercial and industrial settings. Contact Polycon Gulf to compare suitable capacities and choose a water storage tank that fits your requirement and installation conditions
