Water Delivery Truck vs. Garden Hose: Real Cost to Fill Your Pool

You finally got the pool ready, the liner is down or the plaster has cured, and then someone asks the question you hadn’t thought about: how are you actually going to fill this thing? It sounds simple until you realize you’re looking at 15,000 to 25,000 gallons of water and you have no idea whether to call a truck or just drag out the hose.

The honest answer is that a garden hose costs less on paper in most cases, but a water delivery truck is faster, avoids utility surcharges, and sometimes makes more sense depending on where you live and what your local water rates look like. This article breaks down the real cost of each method by pool size, walks through a worked example for a 20,000-gallon pool, and tells you exactly when one option beats the other.

What Does Pool Water Actually Cost? The Two Bills You Pay

Before comparing methods, you need to understand how municipal water is billed. Most utilities charge separately for water supply and sewer service, and sewer fees are often calculated based on metered water consumption – meaning you pay for every gallon twice. The U.S. national average for combined water and sewer service runs roughly $0.008 to $0.012 per gallon, though rates in the Southwest and drought-prone areas can push to $0.015 or higher. In lower-cost regions like parts of the Midwest and Southeast, you might pay as little as $0.004 per gallon all-in.

Some municipalities offer a one-time pool fill exemption – you apply in advance, they read your meter before and after, and they waive the sewer portion since that water isn’t going down the drain. If your city offers this, use it every time. The waiver alone can cut your hose-fill cost by 40 to 50 percent.

Garden Hose Filling: The Real Numbers

A standard 5/8-inch garden hose at normal residential water pressure delivers roughly 8 to 12 gallons per minute (GPM). At 10 GPM, filling a 20,000-gallon inground pool takes about 33 hours of continuous flow. That’s not a typo – you’re looking at a day and a half of your hose running nonstop, and if you forget to check it, you risk overflow or a surprise water bill.

Here’s the worked math for a 20,000-gallon pool at the national average rate of $0.010 per gallon (water plus sewer combined):

• Water volume: 20,000 gallons
• Cost per gallon: $0.010
• Total water cost: $200
• Fill time at 10 GPM: approximately 33 hours

Now run those same numbers for a 10,000-gallon above-ground pool at the same rate: 10,000 x $0.010 = $100. In a low-rate area at $0.005 per gallon, a 10,000-gallon pool costs about $50. In a high-rate city at $0.015 per gallon, that same pool runs $150. As Pool Water NH explains, local rate variation is the single biggest factor in whether hose or truck comes out ahead, so look up your actual utility rate before assuming the hose is always cheaper.

Common mistakes people make with hose filling: running only one hose when the meter supports two (which doubles fill time unnecessarily), filling during peak-rate hours if your utility has tiered pricing, and forgetting to check whether their city charges sewer fees on outdoor water use.

Water Delivery Truck: What You Actually Pay

A pool water delivery truck typically carries 6,000 to 9,000 gallons per load. A 20,000-gallon pool therefore needs 3 to 4 truckloads. Pricing varies by region, but most markets charge $75 to $175 per load, which puts a 20,000-gallon fill at $225 to $700 depending on your location and provider.

In high-cost metro areas or remote locations where a truck has to drive further, per-load prices can reach $200 or more. In competitive markets with multiple providers, you can sometimes find deals closer to $60 to $75 per load. Shasta Pools notes that in Arizona, where municipal water rates are above average and drought restrictions are common, truck delivery often makes more financial sense than it does in water-rich regions – especially once you factor in the sewer surcharge on hose-filled water.

The price you see quoted for delivery usually covers the water itself and the driver’s time. What it doesn’t always cover: a minimum delivery charge if your pool is smaller than one full truck, a fuel surcharge for distant addresses, and any setup fee if the truck needs to pump rather than gravity-fill. Ask about all three before you book.

Side-by-Side Cost Comparison by Pool Size

Pool Size (Gallons)	Hose Cost (Low Rate)	Hose Cost (High Rate)	Truck Cost (Est.)	Truck Loads Needed
10,000 gal (small above-ground)	$40-$50	$100-$150	$75-$175	1-2 loads
15,000 gal (mid-size inground)	$60-$75	$150-$225	$150-$350	2-3 loads
20,000 gal (standard inground)	$80-$100	$200-$300	$225-$500	3-4 loads
30,000 gal (large inground)	$120-$150	$300-$450	$350-$700	4-5 loads

Why These Differences Matter for Your Decision

The table above shows that in low-rate water markets, the hose is genuinely the cheaper choice at every pool size – often by a factor of 3 or 4. In high-rate or drought-zone markets, the gap narrows significantly, and for smaller pools the truck can actually come out cheaper or comparable when you account for sewer fees. Distillata’s comparison of hose vs. hauler points out that water quality is another variable: delivered water is typically sourced from a municipal supply and tested, while a hose fill pulls from whatever your tap produces, which may need more chemical adjustment if your source water is hard or high in metals.

Speed matters too. If your new plaster needs to be submerged within 24 hours of application – which many plasterers require – a garden hose running at 10 GPM simply may not get a 20,000-gallon pool filled in time. Two or three trucks can fill that same pool in two to four hours. For post-plaster fills, the truck cost is often worth paying regardless of rate comparisons. As Bonavista Pools explains, new plaster that dries unevenly before full submersion can crack or mottle – a repair bill that dwarfs any savings from the hose.

Water quality from a delivery truck can also mean fewer chemical corrections on startup. When you fill with a hose, your source water’s hardness, pH, and metal content go directly into the pool, and you may need to dose accordingly. Once your pool is filled and balanced, keeping it that way is where the ongoing chemistry work begins – and if you’re troubleshooting cloudy water right after a fill, cloudy pool water is often a chemistry issue, not a filtration one.

When to Pick the Hose

• Low municipal rates: If your combined water and sewer rate is under $0.008 per gallon and your city offers a pool fill exemption on sewer fees, the hose wins on cost every time.
• No time pressure: If you have 48 hours before you need the pool swim-ready and you’re not filling over fresh plaster, the slow fill costs nothing extra.
• Large pools in low-rate areas: For a 30,000-gallon pool in a city with $0.005 per gallon water, hose cost is around $150. No truck is beating that.

When to Call the Truck

• New plaster or finish: Fresh plaster, quartz, or pebble finishes need submersion fast. A truck fill in 2 to 4 hours protects your investment.
• Drought restrictions: Many municipalities ban or limit outdoor hose use during drought conditions. A licensed water hauler is typically exempt from those restrictions. In markets like San Diego, this is one of the primary reasons pool owners use delivery trucks even when the hose would otherwise be cheaper.
• High local water rates: Once your combined rate clears $0.012 per gallon without a sewer exemption, the truck’s price premium shrinks fast.
• No active water meter: New construction sites often don’t have a live meter yet. A truck is the only option.

One thing worth doing before you commit to either method: run through your startup chemical plan in advance. Whether you fill by hose or truck, you’ll need to test and balance the water before anyone swims. If you’re shocking a freshly filled pool for the first time and wondering why it isn’t holding chlorine, the issue is often startup technique – not the water source. AquaDoc’s pool startup shock is formulated to work in fresh fill water with a wide range of source chemistry, which pool owners find useful when they’re not sure what their tap or delivery water contains.

And once the pool is filled and balanced, it’s worth thinking ahead: a proper fall closing starts with a well-balanced pool, so understanding your fall maintenance schedule early means you won’t be scrambling when temperatures drop.

Frequently Asked Questions

How much does it cost to fill a pool with a water delivery truck?

Water truck delivery costs between $225 and $600 for a standard 20,000-gallon inground pool in most U.S. markets. Each truck holds 6,000 to 9,000 gallons and costs $75 to $175 per load, so a 20,000-gallon pool needs 3 to 4 loads. Pricing is higher in remote locations and competitive markets in warmer states where demand is high.

Is it cheaper to fill a pool with a hose or a water truck?

A garden hose is almost always cheaper in raw cost, running $40 to $300 depending on pool size and local water rates, compared to $150 to $700 by truck. The gap closes in high-rate cities and drought zones where sewer surcharges apply or restrictions limit outdoor hose use. For new plaster fills, the truck’s speed often justifies the higher price regardless of cost comparison.

How long does it take to fill a 20,000-gallon pool with a garden hose?

At a typical flow rate of 8 to 12 gallons per minute, a garden hose takes 28 to 42 hours to fill a 20,000-gallon pool. Running two hoses simultaneously cuts that to 14 to 21 hours. A water delivery truck can complete the same fill in 2 to 4 hours using 3 to 4 loads.

When is a pool water delivery truck worth it?

A truck is worth it when you need speed (new plaster or finish requires submersion within 24 hours), when drought restrictions prohibit outdoor hose use, when your municipal water rate is above $0.012 per gallon without a sewer exemption, or when a live water meter isn’t available on a new construction site. In those situations, the convenience and protection of a fast fill outweigh the higher cost.

How much does it cost to fill a 10,000-gallon above-ground pool with a hose?

At the U.S. average combined water and sewer rate of $0.008 to $0.012 per gallon, filling a 10,000-gallon pool costs $80 to $120 with a garden hose. In low-rate areas or if your city offers a sewer exemption for pool fills, that figure can drop to $40 to $60. In high-rate cities or states with drought surcharges, expect to pay $120 to $150 or more.

Bottom Line

For most pool owners in moderate-rate water markets, a garden hose costs 50 to 70 percent less than a delivery truck – but if you’re filling over new plaster, dealing with drought restrictions, or paying high municipal water rates, the truck pays for itself in time savings and finish protection. Know your local water rate, check whether your city offers a sewer exemption, and match the method to your actual situation rather than defaulting to whichever one sounds easier.