Platin Underground Water Tank 1500-7500 Litres

£1,052.48£3,119.87 inc VAT

Robust and versatile underground water storage tank.


Protecting you



Multipurpose Storage Capacity: The Platin Underground Water Tank is expertly crafted to handle a diverse range of storage needs, including non-potable water, wastewater, raw sewage, effluent, silage, slurry, rainwater, greywater, and bluewater. This versatility makes it an indispensable solution for residential, agricultural, and industrial settings, facilitating efficient management of liquid resources and waste.

Available in Various Capacities: To cater to different volume requirements, the Platin Tank is available in sizes ranging from 1500L to 7500L. This selection enables customers to choose a tank that best suits their needs, whether for small-scale residential use or larger industrial applications, ensuring optimal space and resource management.

Convenience of Fully Assembled Delivery: Platin Tanks are delivered fully assembled, dramatically reducing installation time and complexity. This pre-assembly ensures each tank is ready for immediate use upon arrival, streamlining the setup process and reducing the potential for error, which can be critical in urgent or time-sensitive installations.

Optional Vehicle Loading Lid: Recognising the varied demands of installation sites, the Platin Underground Water Tank offers an optional vehicle loading lid, making it suitable for installation areas like driveways where space is limited. This feature allows the tank to withstand vehicles’ load, providing placement flexibility without compromising functionality or safety.

Long-Term Reliability with Warranty: The 10-year warranty reinforces confidence in the Platin Tank’s durability and quality. This extended warranty period underscores the manufacturer’s commitment to quality and customer satisfaction, offering your investment peace of mind and security.

Exceptional Groundwater Stability: Designed to be groundwater-stable up to the tank shoulder, the Platin Tank features a highly stable construction that withstands environmental pressures, preventing water ingress and structural damage. This stability is crucial for long-term reliability and performance, particularly in areas with high groundwater levels.

Choose the Platin Tank for your underground storage needs if you require a durable, flexible, and secure solution that combines ease of installation with a range of capacities to suit any requirement. Its robust design and comprehensive warranty make it a competent and reliable choice for managing various storage challenges.

Images are for illustrative purposes only. Certain products may have been upgraded or replaced with equivalent alternatives.

What's Included

Supplied by Graf

  • Underground water tank & dome (choice of tanks available, sizes vary according to application type)
  • The pedestrian telescopic lid as standard, 3.5 tonnes vehicle loading adjustable lid available on request
  • Extension pieces (risers) as required (extra over items)

Supplied by Others

  • Inlet/outlet drainage pipework
  • Connecting pipework between multiple tank systems

Dimensions, Levels & Weights

Platin Tank Dimensions & Weights (1500L – 7500L)

Rain Water Flat Tank 1500L Platin | Download
Rain Water Flat Tank 3000L Platin | Download
Rain Water Flat Tank 5000L Platin | Download
Rain Water Flat Tank 7500L Platin | Download

Platin Tank Levels & Invert Levels

Platin Tank Levels | Download

Mini & Maxi Lid Dimensions

PE Mini Lid (Pedestrian Loading 371010) | Download

PE Maxi Lid (Pedestrian Loading 371011) | Download

Vehicle Loading Lid (371052) | Download

Extension piece options

Extension Sleeve (371003) | Download

Extension Sleeve (371015) 1000mm | Download


This informative guide covers the following:

  • Loading information
  • Tank coverage heights
  • Excavation dimensions
  • Technical & general data
  • Installation & Assembly

Read the Guide | Download


Please note the following regarding Graf UK deliveries

We’re still delivering to our customers safely via our own delivery vehicles & drivers in the main, using external hauliers when required.


This gives us much greater control & flexibility over our deliveries.


All orders are typically delivered within 5-7 working days from receipt of order, however during this time due to UK-wide disruption, some deliveries may take a little longer and we would still aim to deliver within 10 days.

• Delivery lead time is 5-7 working days on all orders unless otherwise advised.
• Price includes delivery to mainland UK.
• Please check for deliveries into Cornwall, Mid & Northern Scotland & Isles as additional delivery charges may be applicable.
• We cannot currently provide a tracking number for all orders but can accept customer enquiries by phone.
• Off-loading by the customer unless agreed otherwise.
• Tanks are generally strapped to a pallet for forklift off-load, slings can also be used.
• Please advise if there is restricted access to the site or special delivery instructions.