WaterBowsers

If the bowser will travel on public roads between locations, you'll need a highway bowser fitted with road lights, indicators and a braked axle above certain weights, plus it must meet current towing regulations for your vehicle and licence category. Site bowsers are built for off-road use within a single work site and don't need road-legal running gear, which keeps them lighter and often cheaper. Check your towing vehicle's capacity and your licence entitlement before choosing either option.

Only if the tank and all fittings — valves, outlets, seals — are WRAS-approved for potable water storage. Many bowsers are built for non-potable use, such as construction water, dust suppression or irrigation, and using these for drinking water risks contamination. Always confirm potable specification before filling a bowser with water intended for human consumption.

This depends on your application: smaller bowsers (around 500–1000 litres) suit plant watering and small site work, while larger 2000-litre-plus units are common for construction sites, agriculture or council irrigation rounds. Consider your towing vehicle's capacity too, as a full bowser is significantly heavier than empty, and exceeding your vehicle's braked or unbraked towing limit is both dangerous and illegal. If you're topping up frequently, a mid-size bowser with faster turnaround may be more practical than one large tank.

Most bowsers use polyethylene tanks mounted on a steel chassis, offering good chemical resistance, UV stability and a lighter overall weight than fibreglass alternatives. The polyethylene construction resists cracking on rough terrain and won't corrode, which matters for agricultural or construction environments where the bowser takes a battering. Always check the chassis has a suitable galvanised or treated finish too, since this is often exposed to the elements more than the tank itself.

Bowsers typically come with a top-mounted filling point and a bottom outlet valve, often a bayonet or cam-lock fitting, for gravity-fed dispensing. Larger bowsers used commercially may have a pump fitted, either engine-driven or 12V, for faster filling and emptying without relying on gravity alone. Check what outlet size and fitting type you need to match existing hoses or irrigation equipment before ordering.

Regularly check the tank for cracks or UV degradation, inspect valves and seals for wear, and flush the tank periodically to prevent algae or sediment build-up, particularly if it's used intermittently. If it's a towable bowser, the chassis, tyres, lights and coupling need routine checks in line with normal trailer maintenance and road safety requirements. Keeping the tank covered or in shade when not in use helps extend its working life, especially for non-potable units left outdoors year-round.