What a water truck or water cart costs in Australia

A new 13,000 litre Isuzu water truck is advertised at $282,241 to $291,345 ex GST. Mine-spec and 18,000 to 20,000 litre trucks run about $290,000 to $390,000. Used rigid water trucks start at $79,000 for a 2006 Isuzu. A slip-on 10,000 litre cart for your own truck is $29,100 inc GST.

A water truck is two purchases in one: a cab chassis, and a tank body with a pump, spray bars and sometimes a cannon. That is why the same 13,000 litre capacity can cost $29,100 as a slip-on cart for a truck you already own, $109,000 as a 2006 council truck, or $291,345 as a new Isuzu. Tank size, mine spec, spray equipment and whether the price includes GST move the number more than the badge on the cab. This guide sets out what 12 live truck listings ask, what slip-on carts and tanks cost, what hire rates say about buy versus hire, and how a water truck is funded.

What water trucks sell for

The table surveys live listings on Machines4U, truckdealers and usedmachineryfinder, opened on 31 October 2026. Prices are the seller's, indicative market data and not Ventas offers. Machines4U shows ex GST prices, while truckdealers shows GST-inclusive prices, so the two are not directly comparable until you strip the 10 per cent. Several Machines4U sellers list four states at once and name their offices in Victoria, Queensland, New South Wales and Western Australia, so the state in the first column is the truck's location only where a town is named.

Four things stand out. First, tank size and spec set the price band. The two 13,000 litre new Isuzus sit about $9,000 apart ($282,241 and $291,345), and the 18,000 litre 8x4 at $289,662 is barely dearer than the 13,000 litre FXZ because the 8x4 listing leaves spray bars and cannon as extras. Second, mine spec is the big step: the 14,000 litre mine-spec FVZ at $328,800 sits $31,960 above the 14,000 litre road-spec FVZ at $296,840, and the 20,000 litre mine-spec FYH at $389,800 is $100,138 above the 18,000 litre FYH (our arithmetic, tank size also differs). Third, used trucks drop away fast: the 2021 FVD with an 8,000 litre tank asks $165,000 ex GST, while 2006 trucks ask $79,000 to $109,000. Fourth, listings can disagree with themselves. Three Machines4U ads show one price in the header and a different one in the description, and one truckdealers ad shows both 14,000 and 18,000 litres, so confirm the exact price, GST and tank with the seller.

We could not open a priced Australian listing for an articulated mine water cart such as a Cat 725, so we have not tabled any. Those are mostly sold on application or by auction, and the price follows hours, tank and mine compliance.

Slip-on water carts and tanks

If you already own a tipper or cab chassis, a skid or slip-on cart is the cheap route. A polyethylene tank alone is a few thousand dollars, and a complete cart with pump is under $30,000. The catch is capacity and duty: poly slip-ons suit dust suppression, tipper-body hauling and small jobs, not full-time road work or mine haulage. Oxquip prices below were read on 31 October 2026 and the product data marks them as GST-inclusive; confirm at checkout.

Add a frame, baffles and a pump and a 13,000 litre tank build reaches about $31,000 ($16,900 + $8,950 + $5,120, our arithmetic, before a pump and freight). That is still around a tenth of a new complete truck, but it ties up a second truck while the tank is on. If the carrier is a tipper, see our tipper truck cost guide for what that chassis costs.

What moves the price

• Tank size and material. Galvanised steel and poly suit most work. Larger tanks usually need an 8x4 chassis, as the 18,000 and 20,000 litre listings show.
• Baffles. Oxquip charges $5,120 to fit ball baffles on a 13,000 litre tank. Steel tanks carry internal baffles.
• Pump and spray equipment. Hydraulic pump, rear fan sprays, under-body spray bar, dribble bar and in-cab controls. One 8x4 ad lists extra spray bars and a cannon as extras.
• Water cannon and hose reel. Listed on the mine-spec trucks and the WA dealer trucks. Fire fighting fit-outs add a pump and hose reel.
• Mine spec. ROPS, mine electrical, LED lighting, beacons, isolators and stairs. Check the site induction rules before you buy a road-spec truck for a mine.
• Age and kilometres. Used water trucks often carry low kilometres but high pump hours, so ask for service records.
• GST basis. Ex GST and inc GST differ by 10 per cent, which is $28,000 on a $282,241 truck.

Buy or hire

iseekplant publishes hourly hire rates. Its page carries a 2023 byline and a 2025 title, so treat the rates as indicative. All rates are ex GST. Wet hire includes the driver and running costs, dry hire does not.

Against a $282,241 truck, wet hire at $125 to $178 an hour takes roughly 1,600 to 2,260 hours to add up to the purchase price (our arithmetic, before running costs, finance costs and resale value). If you can keep a truck busy for most of a year, buying starts to make sense. If work is patchy, a slip-on tank on a truck you already have, or hire, costs less. Hire rates also show what an owner can charge out a truck for.

Who buys and what they check

Buyers are civil and earthmoving contractors, quarry and mine suppliers, councils' contractors and dust suppression operators. They tend to check the pump and spray fit-out, the tank lining, the work in the truck's history and whether the body can be moved to a new chassis. Our Isuzu truck prices guide covers the cab chassis side.

Financing a water truck purchase

Water trucks are financed like other heavy trucks, but lenders look at them as a work asset with a narrow buyer pool. Banks and non-banks will lend against a late-model Isuzu, Hino or Fuso water truck bought from a dealer, because it has a clear resale market. A 2006 council truck, a mine-spec 20,000 litre unit or an articulated water cart is harder: the resale pool is smaller, so expect a bigger deposit, a shorter term or a lender that specialises in older trucks. Ventas is a finance broker, not a lender, so we do not quote rates here. They change with the lender, the asset age and your file.

Illustrative only, subject to lender assessment. A new 13,000 litre water truck:

And how it is typically funded:

Equipment finance is usually written as a chattel mortgage, with an optional balloon at the end, which lowers the repayment but leaves a lump sum to refinance or pay. Lenders value the truck at dealer or auction resale, and the water body counts for less than the cab chassis because it only suits the next water cart buyer. A property-backed loan can cover the deposit or most of an older truck, with the cost that your property is at risk. GST treatment and any depreciation or write-off rules depend on your business, so ask your accountant.

What makes a water truck deal fundable:

• Work lined up. A contract, a council or mine panel place, or a trading history that shows the hours.
• Truck age and spec. A late-model rigid from a dealer is easiest. Mine spec and older units need more explanation.
• Your position. Two years of financials, the ABN, and a deposit or other security.
• A clear purchase document. Whether the price is ex GST or inc GST, and what is included in the tank and spray fit-out.

To get a number from Ventas, send the listing or dealer quote, the tank size, whether it is new or used, the year and kilometres, your ABN and work lined up, and the deposit you can put in. Start at water truck finance, see truck finance, read the second-hand truck finance guide for older units, or compare the tipper truck cost guide if your slip-on tank will ride on a tipper. Finance is subject to lender assessment and approval.

This is general information only and not financial, credit, or tax advice. Figures are indicative market data from the sources listed, not Ventas offers, and move with the market. Consider your own circumstances and speak to a professional. All finance is subject to lender assessment and approval.

This article is general information only and not financial, credit, or tax advice. Ventas Asset Lending is a finance broker, not a lender. Approvals are subject to lender assessment. Consider your own circumstances and speak to a qualified professional, including your accountant for any tax questions.