Carat XXL Firefighting Water Tanks

Whether you’re a property developer, engineer, or local authority planning a new development or upgrading fire protection infrastructure, choosing the right underground firefighting water tank is essential for long-term reliability and safety.

Our Carat XXL firefighting water tank is engineered specifically for emergency readiness — delivering high-capacity storage, BS 336 certified firefighting connections, and a robust design that meets the highest performance standards.

Made in Europe from 100% recycled materials, the Carat XXL is both CE marked and built for sustainability without compromising on strength. With storage capacities of up to 52,000 litres, it provides a dependable water source where mains supply is insufficient, ensuring quick and efficient delivery of water to fire services when it’s needed most.

Designed with modular flexibility, the Carat XXL allows for independent cleaning of tank sections while maintaining full operational volume — ideal for larger or mission-critical projects. Its telescopic dome shafts, inspection ladder, and HGV loading capacity of up to 40 tonnes make it suitable for a wide range of installation conditions, including challenging ground or limited access sites.

Compatible with mains top-up valves and building management systems, it can also be expanded using our EcoBloc modular tanks for even greater storage capacity.

Built to last with a 50-year design life, the Carat XXL delivers performance, reliability, and peace of mind across a wide range of commercial, residential, and industrial developments.