How Many Tankers Does It Take to Fill a Swimming Pool?
By WaterLink Team · Published · Updated
How many water tankers do I need to fill my pool?
Multiply your pool's length × width × average depth in metres to get cubic metres, then divide by 9.46 — the volume of one 2,500 US-gallon tanker — and round up. A typical 50 m³ Dubai villa pool needs 6 loads; a 30 m³ plunge-style pool needs 4; an 80 m³ pool needs 9.
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Get Price on WhatsAppThe formula
You need three numbers, all in metres:
- Length of the pool.
- Width of the pool.
- Average depth. If the floor slopes, add the shallow-end depth and the deep-end depth and divide by two. Example: 1.0 m and 1.8 m → 1.4 m average.
Then:
Pool volume (m³) = length × width × average depth
Tanker loads = pool volume ÷ 9.46, rounded up
Why 9.46? One 2,500 US-gallon tanker holds 2,500 × 3.785 litres = 9,464 litres, which is 9.46 cubic metres. (If a supplier uses imperial gallons, one 2,500-gallon load is 11.37 m³ — always ask which gallon they mean.)
You don’t need to do the maths yourself: the pool calculator does it and pre-fills a WhatsApp message with the result.
Worked examples
| Pool | Size (L × W × avg depth) | Volume | 2,500-gal loads (US) |
|---|---|---|---|
| Small / plunge pool | 6 × 3 × 1.2 m | 21.6 m³ | 3 |
| Compact villa pool | 8 × 3.5 × 1.1 m | 30.8 m³ | 4 |
| Typical villa pool | 10 × 4 × 1.25 m | 50 m³ | 6 |
| Large villa pool | 12 × 5 × 1.35 m | 81 m³ | 9 |
| Big family pool | 15 × 6 × 1.5 m | 135 m³ | 15 |
The last load is usually only partly used. That’s why we round up — and why we check your numbers before quoting, so you don’t pay for a full load you don’t need. Often the last drop can be a smaller top-up quantity instead.
Pools that aren’t rectangles
- Round pools: volume = 3.14 × radius × radius × average depth. A 5 m-diameter round pool (radius 2.5 m) at 1.2 m deep is 3.14 × 2.5 × 2.5 × 1.2 = 23.6 m³ → 3 loads.
- Kidney and free-form pools: measure the longest length and the widest width, multiply, then multiply by about 0.85 to allow for the curves. Then multiply by average depth.
- Pools with a spa or a sun shelf: work out each part separately and add them together.
If you have the pool drawings, the volume is often written on them. Your pool company will also know it.
Don’t forget the balance tank
Many villa pools, especially infinity-edge and overflow pools, have a balance tank (also called a surge tank) that must be filled too. It can add a few cubic metres. Ask your pool company whether yours has one and how big it is.
How long does a full fill take?
Each load is pumped from the tanker through a hose into your pool. The total time depends on the number of loads, how far the truck has to travel between the filling station and your home, and the hose length. For a multi-load fill we plan the loads back-to-back and, where the volume is large, add partner tankers so the pool fills on the same day.
What it costs
Multiply the number of loads by the price per 2,500-gallon load. At WaterLink’s starting price (see the table above), a 50 m³ pool needing 6 loads costs from 6 × the 2,500-gallon price, delivery included, excluding VAT. Your final price is confirmed on WhatsApp before we dispatch.
For comparison, filling from a garden hose is much cheaper per litre but can take days and ties up your mains supply — which is why most owners use a tanker for full fills and the hose (or a small tanker drop) for top-ups.
Before you book
- Measure (or find) length, width, shallow depth and deep depth.
- Check if there’s a balance tank.
- Check how far the pool is from where a truck can park — we need to bring enough hose.
- Agree a time with your pool company so they can balance the water straight after the fill.
Then send the numbers to us on WhatsApp — or use the pool calculator — and we’ll confirm the loads and today’s price. See swimming pool water tanker delivery for how a fill works.