Additional Information

Site Information

  • 1800 Litre (396 Gallon) Underground Potable Water Tank
  • 1800 Litre (396 Gallon) Underground Potable Water Tank - Free Delivery & 15 Year Warranty
  • 1800 Litre Below Ground Water Tank Dimensions
  • Optional Telescopic Neck and Lid Assembly
  • Image 5
  • 1800 Litre Underground Water Tank Service Connections Orientations (Standard)

1800 Litre Underground Water Tank - Potable

Contact us for competitive quote.

Prices include VAT

Contact us for competitive quote.

Product Description

Underground Water Tank - 1800 Litres (Potable)

This robust water storage tank, manufactured in virgin polyethylene plastic provides 1,800 litres of capacity.  Suitable for potable (drinking water) use. These underground water tanks are generally used to store rainwater, however they can also be used to store water pumped from other sources, for example, wells and springs. 

The high-strength, ribbed design allows for environmentally friendly pea-gravel backfills and eliminates the need for any concrete to be used in most situations. Some installations may require further advice and an alternative installation method.

The tank features a large 600mm access which allows access for inspection and maintenance and for cther components like pumps and filters to be installed.

This below ground water storage tank is moulded using a rotational moulding process which produces a stress-free product.  The Polymer used includes additives which make it resistant to harmful UV rays from the sun and with correct installation and general on-going care, these products have a long lifetime ahead of them with very little or no maintenance required.  They are extremely robust and very resilient and are able to withstand the most extreme conditions from the elements.

Free Delivery Mainland UK (customer is responsible for off-loading from delivery vehicle).


This tank carries a 15-year warranty against material failure when installed in conjunction with instructions from and with advice from a professional appointed structural engineer, where applicable.

Optional Extras

See above options to add these items to your order..

Lockable Lid

Lockable lids are available for this below ground tank. Lids are available with either a 200Kg (Pedestrian) or 600Kg (Vehicle) carrying capacity.

Telescopic Turret Extension

The optional telescopic neck and lid push fits into the neck of the tank and a rubber seal towards the bottom ensures a tight fit. The telescopic neck can be extended by up to 300mm and can be tilted in any direction by up to 5 degrees. The tank come with one generously sized 600mm diameter tank dome designed to take a range of filter and pump configurations.

Technical Information

  • Capacity: 1800L (396 gallons approx)
  • Suitable for Potable Water: Yes
  • Height: 1370mm
  • Length: 2080mm
  • Width: 1260mm
  • Access Entry: 600mm
  • Material Type: Virgin Polyethylene Plastic
  • Construction: Single-piece rotational mould
  • Nominal Weight: 75Kg



Free delivery to mainland UK locations is offered with this product. For Highlands and Islands, please contact us for a quote.

Please advise if access is limited as deliveries may be undertaken with a large articulated lorry and re-deliveries may incur an extra charge. The customer is responsible for off-loading the tank from delivery vehicle.

Delivery is usually arranged within 3 working days of receiving an order.  It is the responsibility of the customer to ensure the tank is handled correctly and in accordance with the advice in the installation manual.

Product Reviews

Write Review

This product hasn't received any reviews yet. Be the first to review this product!