4,000 – 5,000 Litre Water Tanker Truck

At 4,000-5,000 litres (roughly 1,050-1,320 US gallons), a water tanker truck is small enough to move through construction sites and narrow streets that a larger unit can't reach, and light enough that most 4x2 chassis carry it with room to spare on the gross weight limit. This is the size fleets pick for spot dust suppression, small-site compaction watering and municipal routes with hydrants close together.

It is also our smallest standard water tanker build. Below this range, most of what's sold is a bolt-on tank for a pickup bed rather than a purpose-built truck — if that's what you're after, it's outside what we manufacture. For anything from 4,000 litres up, we build the full truck: chassis, tank, pump and spray system as one unit.

Truck or Trailer at This Size

A tank this small runs as a rigid water tanker truck, not a semi trailer — there's no advantage to towing a separate trailer for 5,000 litres, and a rigid truck is more manoeuvrable on job sites and doesn't leave a tractor unit idle while the tank fills. If your fleet needs to move past 20,000 litres, that's where a water tanker semi trailer starts making sense instead — see our 20,000 litre water tanker trailer for that build.

Carbon Steel or Stainless

Carbon steel is the default and covers dust suppression, irrigation and non-potable use — lower cost, easy to repair anywhere. Stainless steel is for drinking water and anything a health inspector checks; it costs more but doesn't rust internally the way carbon steel does under repeated fill-and-drain cycles. If the water is for drinking, order stainless.

Spray System and Chassis

Every unit ships with front spray nozzles for direct dust knockdown and a rear sprinkler bar for wider coverage on repeat passes, run off a PTO-driven centrifugal pump rated for continuous duty rather than occasional use. At this tank size a 4x2 chassis is standard — HOWO, Shacman or FAW, matched to whatever brand you already run elsewhere in your fleet to simplify servicing.