UAE regulations require minimum water storage capacity for all buildings based on type of use and occupancy. Getting this right ensures DEWA and municipality approval, adequate water supply during supply interruptions, and compliance with UAE plumbing codes.
Our Water Tank Size Calculator covers all UAE building types — residential villas and apartments, offices, hotels, and retail — giving you the correct tank capacity in litres and cubic metres with sizing recommendations.
How to Use This Calculator
- Select building type from the dropdown — each has a different daily consumption rate
- Enter number of units, people, beds, or area as applicable
- Select storage reserve required — 2 days is the UAE standard recommendation
- Enter number of floors to help determine overhead vs underground tank sizing
- Click Calculate for daily demand, required capacity, m3, and tank size recommendation
🇦🇪 UAE Tip: UAE authorities require tanks to be accessible for cleaning a minimum of twice per year per UAE public health regulations. HDPE tanks are most popular for UAE residential use due to their UV resistance and ease of installation. GRP tanks are preferred for large commercial installations. All drinking water tanks must be made from food-grade materials and kept covered at all times.
The Formula Explained
Daily Demand = Consumption Rate x Number of Units. Tank Capacity = Daily Demand x Storage Days Required. GRP or HDPE tank sizes are available in standard increments from 1,000 litres.
Frequently Asked Questions
What is the UAE daily water consumption rate?
UAE regulations typically use 200 litres per person per day for residential properties. Commercial offices use 40 litres per person per day. Hotels use 100 litres per bed per day.
Where should a water tank be positioned in UAE?
Underground cistern tanks are recommended for main storage — cooler, more hygienic, gravity fill. An overhead header tank of 20 to 25 percent total capacity provides gravity pressure to upper floors.
How often should water tanks be cleaned in UAE?
Minimum twice per year — typically before and after summer. UAE public health regulations require documented cleaning records. Water quality testing is recommended quarterly for large buildings.
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