Water Tanks
The Online Tank Store offer a full range of Water Tanks and plastic water storage tanks manufactured from high-quality, UV-stabilised polyethylene. Working with leading UK manufacturers, our water tanks are designed to be hard-wearing, weatherproof and long-lasting for domestic, agricultural and commercial use. Read More Choosing the correct water tank doesn’t have to be difficult. We’ve organised our range into easy-to-browse categories to help you quickly find the right solution: Many of our water tanks can be modified to suit your project, including additional outlets, thicker walls for specialist applications, or custom fittings. If you require a bespoke water tank, please contact us and we’ll be happy to discuss your requirements. We also list our products by manufacturer here. Not sure what size or type of water tank you need? Our handy 7-step guide will help you choose the right tank. When selecting a water tank, consider: If you need to fit a water tank into a specific area, simply enter your available dimensions into our shop filters to display suitable options. Still unsure? Call our team for expert advice – we’re here to help. Need an additional outlet, a different colour, or specific pipework? We supply custom water tanks tailored to your project requirements. Contact us via our form or call to discuss your bespoke tank solution.Find The Right Water Tank In Minutes
How To Choose The Best Water Tank
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Water Tanks – Frequently Asked Questions
Are your water tanks suitable for drinking water?
Many of our water tanks are manufactured from food-grade, UV-stabilised polyethylene and are suitable for potable (drinking) water storage. Where required, we also supply WRAS-approved water tanks for installations that need certified potable compliance. Product pages clearly indicate suitability.
Can water tanks be installed above or below ground?
Yes. We supply both above-ground water tanks and underground water tanks. Above-ground tanks are easier to install and maintain, while underground tanks offer a discreet, space-saving solution. The correct option depends on available space, access and installation requirements.
Do you supply large capacity water tanks?
Do you supply large capacity water tanks?
Can water tanks be customised?
Most of our plastic water tanks can be adapted with additional inlets, outlets, level gauges or thicker walls for specialist applications. If you require a bespoke configuration, contact our team and we’ll be happy to advise on suitable options.
How quickly can water tanks be delivered?
We deliver water tanks across the UK, including offshore locations. Delivery times vary depending on size and specification, but many standard tanks are available with fast UK delivery. Collection may also be available for selected products.

















