Trailer Water Tanks

Plan your water setup with trailer water tanks, fillers, hoses, pumps, filters and related fittings for caravans, campers and custom builds. Our range includes products from Coast to Coast RV, Fineline Trailers, Navigator Trailer Parts and Shurflo. You can source parts for storing fresh water, filling the system, moving water to taps and managing waste hose. The category suits repairs, upgrades and custom trailer projects.

16 Products Found

Frequently Asked Questions

What tank capacity should I choose?

Work from the space under or inside your trailer, the payload available and how long you plan to travel between refill points. Water weighs about one kilogram per litre, so a larger tank can add a large amount to your loaded weight. When comparing trailer water tanks, allow room for brackets, hoses, fittings and access for servicing rather than using every millimetre of free space.

What other parts are needed for a fresh water setup?

A basic system may need a filler, food-safe hose, outlet fittings, pump, filter, tubing and a tap or appliance connection. The exact layout depends on the tank position and how you want to draw water. Match thread sizes and hose diameters before buying. A pump strainer or filter can help protect the pump, while a secure filler cap helps keep debris out of the tank.

Where should a water tank be mounted?

Place the tank where its weight can be supported and where it will not interfere with suspension, wiring, exhaust parts or road clearance. Keep the added load balanced across the trailer rather than placing all the weight at one end. Trailer water tanks need suitable brackets or supports that spread the load, plus enough access to inspect fittings and deal with a leak.

How should I prepare the system after storage?

Drain old water, flush the tank and lines, then sanitise the system with a product intended for caravan or RV water systems. Rinse as directed before filling it for use. Inspect caps, hoses, filters and pump fittings for damage or leaks. If the trailer has been stored for a long period, check for insects or debris around breathers and filler points before adding fresh water.