Baffled Water Tanks
Baffled water tanks are designed for safely transporting water in vehicles. Internal baffles reduce liquid movement inside the tank, improving vehicle stability, reducing wear and tear, and helping create a safer load during transport.
These tanks are widely used in vans, trailers and commercial vehicles by window cleaners, valeters, contractors and agricultural users who need reliable mobile water storage. Our range includes durable, high-quality baffled tanks in multiple sizes, suitable for both potable and non-potable water applications.
We supply baffled water tanks from trusted UK manufacturers, with many models in stock for fast nationwide delivery. Read More Baffled tanks are ideal for mobile water applications including: Window cleaning Mobile car valeting Agricultural spraying Campervan and motorhome water systems Catering and events Marine and boating use A baffled tank contains internal walls (baffles) that control water movement. This prevents the liquid from shifting suddenly during transport, which can otherwise affect vehicle handling and safety. If you are transporting larger volumes of water, baffles are essential for improving load stability and safety. Tanks from 210 litres and above should include baffles when used for transport. Improved vehicle handling Reduced wear and strain on vehicles Increased tank strength and durability These tanks are manufactured from durable medium density polyethylene. Natural-coloured tanks are made from WRAS-approved polymer, making them suitable for potable water storage. Our baffled water tank range starts from 160 litres and goes up to 1250 litres, providing options for both small vans and larger commercial vehicles. If you’re unsure which tank you need, see our water tank buying guide or contact us via live chat for expert advice.Who uses baffled water tanks?
What is a baffled water tank?
Do I need a tank with baffles?
Benefits of baffled tanks
Materials and construction
Capacity range
Need help choosing?
Baffled Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Transportable Water Tanks
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0-250 Litre Water Tanks
Baffled Water Tanks
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Above Ground Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Above Ground Water Tanks
Baffled Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Above Ground Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Transportable Water Tanks
Transportable Water Tanks
Baffled Water Tanks
Baffled Water Tanks
Baffled Water Tank FAQs
What Should I Consider When Buying A Baffled Water Tank?
There are more internal surfaces to a baffled water tank. Therefore, making the tank harder to clean than a standard tank. Consequently, this should be a consideration, especially if the tank is to be used for liquids other than water.
I Plan To Transport The Tank In A Van. What Tank May Be Best?
From experience, our customers favor the Baffled Water Tanks for this application.
A Baffled Water Tank has pre-moulded internal walls called ‘baffles’ which helps to control the movement of the water in the tank during transportation of liquid. This also helps to improve the vehicle maneuverability.
The size of tank required is completely dependent on the size of your vehicle and the set-up you require. The most popular Baffled Water Tanks are as follows: 210 Litre upright, 250 Litre upright, 350 Litre upright and the 400 Litre upright water tank. We do have customers who prefer the larger tanks so this is also an option.
The Baffled Water Tanks are also suitable for use with water-fed poles.
To view our full range of Baffled Water Tanks, click here.
Water Tank Outlet 'Drilled' or 'Undrilled'?
Each tank comes with a outlet as standard. The plastic behind the outlet can be removed (‘drilled’) to allow the liquid to run out of the tank and through a tap if you have one fitted. It can also be left ‘undrilled’ which means it remains closed and the liquid cannot come out through this outlet. You may wish the outlet to be left undrilled if you plan to use the tank purely to store water, as an example.
It is possible to choose ‘drilled’ but purchase a ‘plug’ for the correct size outlet which will seal the outlet when required but allow for flexibility in the use of the outlet. Another option is to choose to have the tank ‘undrilled’ and remove the plastic yourself at a later date.
What Lid Do I need?
Each Water Storage Tank comes with either a ‘Vented’ or a ‘Plain’ lid as standard.
A vented lid allows air to circulate within the tank, helping to control the pressure within it. This is important if you plan to attach a pump to the tank as without this, the pressure may cause the tank may deform. Often, this type of damage is not repairable.
A plain lid is purely for containing the water and stops air getting into the tank.
See below for an example of either type (Note – the lid may look slightly different depending on what tank you are looking at. Please refer to the individual product for details).


In most instances, it is possible to swap a lid for an alternative but please contact us before ordering unless it is offered as an option on the product page.
Do I Need A Tank With Baffles?
If you are carrying 210 litres or above, then it is a legal requirement to ensure the tank has baffles within it. Our baffled water tank range starts from 160 Litres.
What Are The Benefits Of A Baffled Water Tank?
There are a number of benefits to a tank that has internal baffles.
- Better vehicle handling
- Less wear and tear on.
- Increased tank strength
Highly durable medium density polyethylene ensures a robust tank that can up-stand tough conditions. As standard, tanks in the natural colour are manufactured from a WRAS-approved polymer, meaning they are suitable for potable water. This is also semi-translucent, which means the water level can be seen easily.
Can I Add Extra Inlets / Outlets To The Water Tanks?
Yes. This is possible by using a ‘fusion’ and are available in a number of sizes to suit your application or project. View the range here or read our Fusion Socket Guide here for more information. Just add the required fusion onto your order and once complete, we will be in touch to arrange placement of the fusion/s.
What Does 'Potable' mean?
‘Potable’ is a term used to describe a tank suitable for storing water for human consumption. To be classified as potable, the plastic it is manufactured from must conform to the WRAS (Water Regulations Advisory Scheme). For more information on this, please visit the WRAS Approvals website here where they have an information titled ‘What is a WRAS Approval?’.
All our potable tanks adhere to these regulations. It will specify if a tank is potable in the Product Specification section on each product page.














































