3,500 Litre Water Tank, Non-Potable



3,500 Litre Water Tank Specification

  • Supplied as standard with a 2” Outlet (other options available)
  • Lid: 620 mm
  • Dimensions (mm): 1900 dia x 1430 h
  • Colours: Available black, boat blue, dark green or natural colour
  • 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


3,500 Litre Non-Potable Water Tank for Process & Rainwater 

Enduramaxx’s 3,500 Litre non-potable water tank or plastic process water tank is designed for process & industrial storage applications. This tank provides water storage at your convenience for many purposes where either mains water is not required or not available. 

This self-supporting vertical cylindrical tank is rotationally moulded from UV stabilised MDPE (mid-density polyethene). This high-quality tank guarantees strength impacts resistance and durability and UV Stabilised for outside use. 

Non-Potable or Potable Water?  What’s the difference? 

Non-potable tanks are used for industrial and commercial applications. This includes uses such as toilet flushing, horticultural and market garden applications, agricultural irrigation or are where mains water is not available. Non-potable tanks are designed for the storage of non-drinking water and for everyday uses across many different applications. 

Water tanks classified as ‘potable drinking water tanks are suitable for storing water fit for human consumption and confirm to the WRAS (Water Regulations Advisory Scheme). This includes the plastic not tainting the water that it’s holding. 

Our plastic water tanks are available in natural plastic which is semi-translucent to see the liquid or water level in the tank. 

3,500 Litre Non-Potable Water Tank uses 

  • Landscape watering for parks and recreational purposes 
  • Horticultural and Market Garden applications 
  • Cost-effective watering systems for groundskeepers and sporting stadia 
  • Toilet flushing in industrial, commercial, hospital or school environments 
  • Equine and agricultural establishments 
  • Irrigation and/or wash-down facilities 
  • Civil engineering applications where mains water is unavailable 
  • Agricultural tank and farm sprayer tank 
  • Crop sprayer tank 
  • Seawater storage tanks for aquariums and sea life centres 
  • Backwash water tanks for swimming pool 
  • Rainwater harvesting tank to store water for rainwater harvesting systems 

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

Customisation of fittings & equipment mounting 

These drinking water tanks are available with tank modifications to suit your project.  Liquid level sensor assemblies, fill pipesPN16 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. 

Potable Water & Regulation 31 Tank Water Tanks 

Our tanks are available as drinking water tanks which are manufactured from WRAS approved polymer (Water Regulations Advisory Scheme). These potable tanks are available in black, boat blue or natural for water for human consumption.  

These 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. 

Delivery of Your Water Tank 

Our process 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 the 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 wide range of potable water storage tanks, rain water tanks, car valeting, water butts, wastewater and tanks below ground is available here   

How big is a 3,500 Litre Non-Potable Water Tank? 

Capacity   3,500 Litres  
Diameter   mm 
Height   mm  
Outlet   2″ plastic male outlet with other options available 
Lid   620mm dia lid 


Additional information

Dimensions 190 × 190 × 143 cm

Black, Natural, Dark Green, Blue

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Technical Data Sheet – 172109  Technical Data Sheet – 172109

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