400 Litre Squat Potable Drinking Water Tank 



400 Litre Drinking Water Tank Specification

  • Dimensions (mm) 1600 x 710 x 510
  • Lid: 255mm – Supplied as standard with a 1.5” Outlet
  • WRAS approved polymer in black, natural and blue, supplied with a Bye-law 30 kit (Bye-law 60 in Scotland)
  • 100% rust proof
  • UK manufactured – 10 year guarantee

Does your project need to meet Fluid Category 5 regulations?

Please note: Tank sizes quoted are subject to a +/- 3% variation


Outlet Options *

WRAS approved BSP Plastic Tank Connectors

Ball Valve

WRAS Approved

Float Valve

WRAS Approved

Customer Offloading *

It is the customers responsibility to offload, a HIAB is available for an additional fee

400 Litre Potable Drinking Water Tank

Enduramaxx’s 400 Litre potable drinking water tank is manufactured from WRAS Approved polymer. This high-quality tank is a one-piece mould, seamless, rotationally moulded tank that guarantees strength, impacts resistance and durability. It is manufactured from MDPE medium density polyethene and UV stabilised for many years outside use.

400 Litre Potable Water Tank uses

  • Bulk water storage
  • Back-up emergency drinking water supply
  • Food industry
  • Brewing and winemaking sectors
  • Temporary water supply for events and festivals
  • Domestic water solutions
  • Civil engineering applications where mains water is unavailable

WRAS Approved Polymer for Drinking Water

All drinking water tanks are manufactured from WRAS approved polymer (Water Regulations Advisory Scheme) and available in black, boat blue or natural.

Regulation 31 Approved Tanks

Our plastic water tanks manufactured from WRAS approved material are DWI approved and meet the specific requirements of Regulation 31. This ensures that water suppliers producing and distributing drinking water only use products that don’t cause any detrimental effects on the safety or quality of the drinking water.

Fluid Category 5 Tanks

In many installations, potable drinking water tanks which are connected to the mains water supply will need to be fluid category 5 approved. More details on tank installations that come under this are available here.

Tanks with insulation to prevent thermal gain and loss are available.

Customisation of fittings & equipment mounting

These drinking water tanks are available with tank modifications to suit your project.  Liquid level sensor assemblies, fill pipes, PN16 and ANSI flanged connections, welded BSP outlet and sockets. Bolt down lid and side access hatch are available for access for cleaning, installation and maintenance of water pumps.

Delivery of Your Water Tank

Our drinking water tanks are manufactured at our factory in Lincolnshire. Most plastic tanks, underground water tanks and rainwater tanks are stocked for collection or quick delivery throughout the UK.

We are available to deliver direct to the site for installers to save double handling of these tanks. In some cases where clients cannot offload the tank, we can offer Hiab deliveries which are priced upon request.  Please view our above-ground installation guide here.

Our full range of rainwater harvesting tanks, car valeting, water butts, waste water and tanks below ground is available here  

How big is a 400 Litre Potable Drinking Water Tank? 

Capacity  400 Litres 
Diameter  710mm
Height  510mm 
Outlet  1.5″ plastic male outlet with other options available
Lid  255mm dia lid 

Additional information

Dimensions 160 × 71 × 51 cm

Black, Natural, Red, Blue, Dark Green

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Technical Specification 400 Litre Horizontal Squat Tank -174040  Technical Specification 400 Litre Horizontal Squat Tank -174040

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