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Everything You Need to Know About One Piece Water Tanks
When it comes to reliable water storage solutions, One Piece Water Tanks are one of the most efficient and cost-effective options available. At Tricel, we specialise in manufacturing high-quality GRP (Glass Reinforced Plastic) One Piece Tanks that serve a wide range of applications across domestic, commercial, and industrial settings.
In this post, we’ll explore what One Piece Tanks are, why they’re popular, and how they can meet your water storage needs.


What Are One Piece Tanks?
One Piece Tanks are exactly what they sound like—moulded as a single unit without seams or joints, which minimises the risk of leaks. They are manufactured from GRP, a durable and corrosion-resistant material, making them perfect for long-term water storage.
These tanks are available in a wide range of sizes, from 43 litres up to 6,000 litres, and are supplied fully assembled and ready for installation.
Common Applications
- Domestic water storage
- School and healthcare facilities
- Data centres
- Commercial buildings
- Rainwater harvesting systems
- Agricultural and horticultural use
Key Benefits of One Piece GRP Tanks



Leak-Free & Safe Water Storage
Tricel’s One Piece GRP Tanks are moulded as a single unit, eliminating joints that could leak or weaken over time. This seamless construction ensures a highly secure storage solution, especially for potable water. Made using WRAS-approved materials, these tanks meet stringent health and safety standards, making them ideal for domestic, commercial, and institutional use.
Long-Lasting & Low Maintenance
Built from high-quality Glass Reinforced Plastic (GRP), these tanks are engineered to withstand extreme environmental conditions, including temperature fluctuations and UV exposure. Resistant to rust, corrosion, and biological growth, they require minimal upkeep over their lifespan—making them a cost-effective, long-term solution for water storage.
Fast Installation & Wide Application Use
Thanks to their lightweight and pre-assembled structure, One Piece Tanks can be installed quickly and easily, reducing downtime and labour costs on-site. Their flexible sizing and configurations make them suitable for a variety of uses—such as rainwater harvesting, school water supply systems, residential homes, and data centre cooling setups.
contact our sales team
If you’re looking for a low-maintenance, durable, and reliable water storage solution, One Piece GRP Tanks from Tricel offer a perfect fit. Manufactured using high-quality WRAS-approved materials, these tanks are ideal for storing potable water safely. With fast delivery times, expert support, and a range of sizes and optional fittings—including connections, vents, and access hatches—we help ensure your project runs smoothly from start to finish. Whether it’s for domestic, commercial, or industrial use, Tricel tanks provide long-term performance and peace of mind.
Contact our sales team today to discuss your requirements or get a quick quote.
Customisation Options
Tricel offers custom configurations with optional insulation, screened overflows, and access hatches. This ensures every tank can be adapted to suit your site’s specific needs, whether for internal or external installation. In addition to our One Piece Tanks, we also manufacture a wide range of Sectional GRP Tanks, providing flexible, high-capacity solutions for larger or more complex installations.
Why Choose Tricel?
With over 50 years of experience in water storage solutions, Tricel is one of the leading GRP tank manufacturers in Ireland and the UK. All our One Piece and Sectional Tanks are manufactured in ISO-certified facilities and undergo rigorous quality control to guarantee long-term reliability and performance.
Yes, Tricel’s one piece tanks are made using WRAS-approved materials, ensuring they meet regulations for potable water storage and are safe for residential, commercial, and institutional applications.
Tricel offers a wide range of sizes, from 43 litres up to 6,000 litres. This flexibility makes them suitable for everything from small residential needs to commercial and industrial projects.
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